this derivation will be built:
  /nix/store/0p8g1g8z2z8zq78xnp5z12q8gba7vz6h-tribuchet-0.1.0.drv
building '/nix/store/0p8g1g8z2z8zq78xnp5z12q8gba7vz6h-tribuchet-0.1.0.drv' on 'ssh-ng://customer@mac02'
building '/nix/store/0p8g1g8z2z8zq78xnp5z12q8gba7vz6h-tribuchet-0.1.0.drv'
tribuchet-0.1.0> Running phase: unpackPhase
tribuchet-0.1.0> unpacking source archive /nix/store/x2b2ngpaymm1clig0hav08djds8rr3y3-source
tribuchet-0.1.0> source root is source
tribuchet-0.1.0> Running phase: patchPhase
tribuchet-0.1.0> Executing configureCargoCommonVars
tribuchet-0.1.0> decompressing cargo artifacts from /nix/store/yz6wqp8nbfj882aadfazd13wdlfmpx9h-tribuchet-deps-0.1.0/target.tar.zst to target
tribuchet-0.1.0> Running phase: updateAutotoolsGnuConfigScriptsPhase
tribuchet-0.1.0> Running phase: configurePhase
tribuchet-0.1.0> will append /nix/var/nix/builds/nix-9407-1718950457/source/.cargo-home/config.toml with contents of /nix/store/gjcnsmpsvwi5s63sqd5l0cda8bcrvphg-vendor-cargo-deps/config.toml
tribuchet-0.1.0> default configurePhase, nothing to do
tribuchet-0.1.0> Running phase: buildPhase
tribuchet-0.1.0> +++ command cargo --version
tribuchet-0.1.0> cargo 1.97.0 (c980f4866 2026-06-30)
tribuchet-0.1.0> +++ command cargo build --release --message-format json-render-diagnostics --locked
tribuchet-0.1.0>    Compiling sandbox-proto v0.1.0 (/nix/var/nix/builds/nix-9407-1718950457/source/crates/sandbox-proto)
tribuchet-0.1.0>    Compiling tribuchet v0.1.0 (/nix/var/nix/builds/nix-9407-1718950457/source/crates/tribuchet)
tribuchet-0.1.0> warning: unused import: `std::os::unix::fs::MetadataExt`
tribuchet-0.1.0>   --> crates/tribuchet/src/hub.rs:13:5
tribuchet-0.1.0>    |
tribuchet-0.1.0> 13 | use std::os::unix::fs::MetadataExt;
tribuchet-0.1.0>    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
tribuchet-0.1.0>    |
tribuchet-0.1.0>    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
tribuchet-0.1.0> 
tribuchet-0.1.0> warning: unused import: `std::ffi::CString`
tribuchet-0.1.0>  --> crates/tribuchet/src/rt.rs:4:5
tribuchet-0.1.0>   |
tribuchet-0.1.0> 4 | use std::ffi::CString;
tribuchet-0.1.0>   |     ^^^^^^^^^^^^^^^^^
tribuchet-0.1.0> 
tribuchet-0.1.0> warning: unused import: `std::ffi::NulError`
tribuchet-0.1.0>   --> crates/tribuchet/src/worker/agent.rs:15:5
tribuchet-0.1.0>    |
tribuchet-0.1.0> 15 | use std::ffi::NulError;
tribuchet-0.1.0>    |     ^^^^^^^^^^^^^^^^^^
tribuchet-0.1.0> 
tribuchet-0.1.0> warning: unused import: `std::os::unix::process::CommandExt`
tribuchet-0.1.0>   --> crates/tribuchet/src/worker/sandbox.rs:21:5
tribuchet-0.1.0>    |
tribuchet-0.1.0> 21 | use std::os::unix::process::CommandExt;
tribuchet-0.1.0>    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
tribuchet-0.1.0> 
tribuchet-0.1.0> warning: unused import: `crate::fsutil::io_ctx`
tribuchet-0.1.0>   --> crates/tribuchet/src/worker/sandbox.rs:34:5
tribuchet-0.1.0>    |
tribuchet-0.1.0> 34 | use crate::fsutil::io_ctx;
tribuchet-0.1.0>    |     ^^^^^^^^^^^^^^^^^^^^^
tribuchet-0.1.0> 
tribuchet-0.1.0> warning: unused import: `std::env`
tribuchet-0.1.0>   --> crates/tribuchet/src/main.rs:21:5
tribuchet-0.1.0>    |
tribuchet-0.1.0> 21 | use std::env;
tribuchet-0.1.0>    |     ^^^^^^^^
tribuchet-0.1.0> 
tribuchet-0.1.0> error[E0277]: `?` couldn't convert the error to `errors::Error`
tribuchet-0.1.0>    --> crates/tribuchet/src/worker/agent/darwin.rs:161:44
tribuchet-0.1.0>     |
tribuchet-0.1.0> 161 |         let profile = CString::new(profile)?;
tribuchet-0.1.0>     |                       ---------------------^ the trait `From<std::ffi::NulError>` is not implemented for `errors::Error`
tribuchet-0.1.0>     |                       |
tribuchet-0.1.0>     |                       this can't be annotated with `?` because it has type `Result<_, std::ffi::NulError>`
tribuchet-0.1.0>     |
tribuchet-0.1.0> note: `errors::Error` needs to implement `From<std::ffi::NulError>`
tribuchet-0.1.0>    --> crates/tribuchet/src/errors.rs:19:1
tribuchet-0.1.0>     |
tribuchet-0.1.0>  19 | pub enum Error {
tribuchet-0.1.0>     | ^^^^^^^^^^^^^^
tribuchet-0.1.0>     = note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait
tribuchet-0.1.0>     = help: `errors::Error` implements trait `From<T>`:
tribuchet-0.1.0>               From<JoinError>
tribuchet-0.1.0>               From<ParseStorePathError>
tribuchet-0.1.0>               From<PathInfoError>
tribuchet-0.1.0>               From<build_json::Error>
tribuchet-0.1.0>               From<ca::Error>
tribuchet-0.1.0>               From<config::Error>
tribuchet-0.1.0>               From<fsutil::Error>
tribuchet-0.1.0>               From<harmonia_store_db::Error>
tribuchet-0.1.0>             and 12 others
tribuchet-0.1.0> 
tribuchet-0.1.0> error[E0277]: `?` couldn't convert the error to `errors::Error`
tribuchet-0.1.0>    --> crates/tribuchet/src/worker/agent/darwin.rs:164:40
tribuchet-0.1.0>     |
tribuchet-0.1.0> 164 |             owned.push(CString::new(*k)?);
tribuchet-0.1.0>     |                        ----------------^ the trait `From<std::ffi::NulError>` is not implemented for `errors::Error`
tribuchet-0.1.0>     |                        |
tribuchet-0.1.0>     |                        this can't be annotated with `?` because it has type `Result<_, std::ffi::NulError>`
tribuchet-0.1.0>     |
tribuchet-0.1.0> note: `errors::Error` needs to implement `From<std::ffi::NulError>`
tribuchet-0.1.0>    --> crates/tribuchet/src/errors.rs:19:1
tribuchet-0.1.0>     |
tribuchet-0.1.0>  19 | pub enum Error {
tribuchet-0.1.0>     | ^^^^^^^^^^^^^^
tribuchet-0.1.0>     = note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait
tribuchet-0.1.0>     = help: `errors::Error` implements trait `From<T>`:
tribuchet-0.1.0>               From<JoinError>
tribuchet-0.1.0>               From<ParseStorePathError>
tribuchet-0.1.0>               From<PathInfoError>
tribuchet-0.1.0>               From<build_json::Error>
tribuchet-0.1.0>               From<ca::Error>
tribuchet-0.1.0>               From<config::Error>
tribuchet-0.1.0>               From<fsutil::Error>
tribuchet-0.1.0>               From<harmonia_store_db::Error>
tribuchet-0.1.0>             and 12 others
tribuchet-0.1.0> 
tribuchet-0.1.0> error[E0277]: `?` couldn't convert the error to `errors::Error`
tribuchet-0.1.0>    --> crates/tribuchet/src/worker/agent/darwin.rs:165:40
tribuchet-0.1.0>     |
tribuchet-0.1.0> 165 |             owned.push(CString::new(*v)?);
tribuchet-0.1.0>     |                        ----------------^ the trait `From<std::ffi::NulError>` is not implemented for `errors::Error`
tribuchet-0.1.0>     |                        |
tribuchet-0.1.0>     |                        this can't be annotated with `?` because it has type `Result<_, std::ffi::NulError>`
tribuchet-0.1.0>     |
tribuchet-0.1.0> note: `errors::Error` needs to implement `From<std::ffi::NulError>`
tribuchet-0.1.0>    --> crates/tribuchet/src/errors.rs:19:1
tribuchet-0.1.0>     |
tribuchet-0.1.0>  19 | pub enum Error {
tribuchet-0.1.0>     | ^^^^^^^^^^^^^^
tribuchet-0.1.0>     = note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait
tribuchet-0.1.0>     = help: `errors::Error` implements trait `From<T>`:
tribuchet-0.1.0>               From<JoinError>
tribuchet-0.1.0>               From<ParseStorePathError>
tribuchet-0.1.0>               From<PathInfoError>
tribuchet-0.1.0>               From<build_json::Error>
tribuchet-0.1.0>               From<ca::Error>
tribuchet-0.1.0>               From<config::Error>
tribuchet-0.1.0>               From<fsutil::Error>
tribuchet-0.1.0>               From<harmonia_store_db::Error>
tribuchet-0.1.0>             and 12 others
tribuchet-0.1.0> 
tribuchet-0.1.0> For more information about this error, try `rustc --explain E0277`.
tribuchet-0.1.0> warning: `tribuchet` (bin "tribuchet") generated 6 warnings
tribuchet-0.1.0> error: could not compile `tribuchet` (bin "tribuchet") due to 3 previous errors; 6 warnings emitted
error: build of '/nix/store/0p8g1g8z2z8zq78xnp5z12q8gba7vz6h-tribuchet-0.1.0.drv' on 'ssh-ng://customer@mac02' failed: Cannot build '/nix/store/0p8g1g8z2z8zq78xnp5z12q8gba7vz6h-tribuchet-0.1.0.drv'.
       Reason: builder failed with exit code 101.
       Output paths:
         /nix/store/xl96d3b9z684rzypwyq5yfmid66vynfi-tribuchet-0.1.0
       Last 25 log lines:
       > 165 |             owned.push(CString::new(*v)?);
       >     |                        ----------------^ the trait `From<std::ffi::NulError>` is not implemented for `errors::Error`
       >     |                        |
       >     |                        this can't be annotated with `?` because it has type `Result<_, std::ffi::NulError>`
       >     |
       > note: `errors::Error` needs to implement `From<std::ffi::NulError>`
       >    --> crates/tribuchet/src/errors.rs:19:1
       >     |
       >  19 | pub enum Error {
       >     | ^^^^^^^^^^^^^^
       >     = note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait
       >     = help: `errors::Error` implements trait `From<T>`:
       >               From<JoinError>
       >               From<ParseStorePathError>
       >               From<PathInfoError>
       >               From<build_json::Error>
       >               From<ca::Error>
       >               From<config::Error>
       >               From<fsutil::Error>
       >               From<harmonia_store_db::Error>
       >             and 12 others
       >
       > For more information about this error, try `rustc --explain E0277`.
       > warning: `tribuchet` (bin "tribuchet") generated 6 warnings
       > error: could not compile `tribuchet` (bin "tribuchet") due to 3 previous errors; 6 warnings emitted
       For full logs, run:
         nix log /nix/store/0p8g1g8z2z8zq78xnp5z12q8gba7vz6h-tribuchet-0.1.0.drv
error: Cannot build '/nix/store/0p8g1g8z2z8zq78xnp5z12q8gba7vz6h-tribuchet-0.1.0.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/xl96d3b9z684rzypwyq5yfmid66vynfi-tribuchet-0.1.0