[INFO] fetching crate nix-build 0.1.0...
[INFO] testing nix-build-0.1.0 against beta-2026-01-20 for beta-1.94-1
[INFO] extracting crate nix-build 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate nix-build 0.1.0
[INFO] finished tweaking crates.io crate nix-build 0.1.0
[INFO] tweaked toml for crates.io crate nix-build 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate nix-build 0.1.0 on toolchain beta-2026-01-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate nix-build 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c47807bbe1f2cc170f1d8c7b489593dee10ef06ec07be0561c22e602d6c5651d
[INFO] running `Command { std: "docker" "start" "-a" "c47807bbe1f2cc170f1d8c7b489593dee10ef06ec07be0561c22e602d6c5651d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c47807bbe1f2cc170f1d8c7b489593dee10ef06ec07be0561c22e602d6c5651d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c47807bbe1f2cc170f1d8c7b489593dee10ef06ec07be0561c22e602d6c5651d", kill_on_drop: false }`
[INFO] [stdout] c47807bbe1f2cc170f1d8c7b489593dee10ef06ec07be0561c22e602d6c5651d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2898265d2e71144f6dc89555c29d4b36910d15263fdf8af2345915a149727684
[INFO] running `Command { std: "docker" "start" "-a" "2898265d2e71144f6dc89555c29d4b36910d15263fdf8af2345915a149727684", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling serde v1.0.208
[INFO] [stderr]    Compiling rustix v0.38.34
[INFO] [stderr]    Compiling linux-raw-sys v0.4.14
[INFO] [stderr]    Compiling bitflags v2.6.0
[INFO] [stderr]    Compiling serde_json v1.0.125
[INFO] [stderr]    Compiling home v0.5.9
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.75
[INFO] [stderr]    Compiling which v4.4.2
[INFO] [stderr]    Compiling serde_derive v1.0.208
[INFO] [stderr]    Compiling nix-build v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.88s
[INFO] running `Command { std: "docker" "inspect" "2898265d2e71144f6dc89555c29d4b36910d15263fdf8af2345915a149727684", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2898265d2e71144f6dc89555c29d4b36910d15263fdf8af2345915a149727684", kill_on_drop: false }`
[INFO] [stdout] 2898265d2e71144f6dc89555c29d4b36910d15263fdf8af2345915a149727684
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9012d464629fd96aecc60737a9b520e6089a3bec3028aadd8d48928ef40a0374
[INFO] running `Command { std: "docker" "start" "-a" "9012d464629fd96aecc60737a9b520e6089a3bec3028aadd8d48928ef40a0374", kill_on_drop: false }`
[INFO] [stderr]    Compiling nix-build v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "9012d464629fd96aecc60737a9b520e6089a3bec3028aadd8d48928ef40a0374", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9012d464629fd96aecc60737a9b520e6089a3bec3028aadd8d48928ef40a0374", kill_on_drop: false }`
[INFO] [stdout] 9012d464629fd96aecc60737a9b520e6089a3bec3028aadd8d48928ef40a0374
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b2a20228e5a832515e2fc4205a184d2f7cbb582910bdacd31b29bdabcbefbe71
[INFO] running `Command { std: "docker" "start" "-a" "b2a20228e5a832515e2fc4205a184d2f7cbb582910bdacd31b29bdabcbefbe71", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/nix_build-0c36755959e7eb4f)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests nix_build
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/config.rs - config::Config::target_flake (line 103) ... FAILED
[INFO] [stdout] test src/config.rs - config::Config::target_expr (line 114) ... FAILED
[INFO] [stdout] test src/config.rs - config::Config::target_file (line 92) ... FAILED
[INFO] [stdout] test src/config.rs - config::Config::arg_expr (line 70) ... FAILED
[INFO] [stdout] test src/config.rs - config::Config::arg_str (line 81) ... FAILED
[INFO] [stdout] test src/lib.rs - build (line 41) - compile ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/config.rs - config::Config::target_flake (line 103) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Config`
[INFO] [stdout]    --> src/config.rs:104:1
[INFO] [stdout]     |
[INFO] [stdout] 104 | Config::default().target_flake("nixpkgs#hello")
[INFO] [stdout]     | ^^^^^^ use of undeclared type `Config`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 103 + use nix_build::Config;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/config.rs - config::Config::target_expr (line 114) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Config`
[INFO] [stdout]    --> src/config.rs:115:1
[INFO] [stdout]     |
[INFO] [stdout] 115 | Config::default().target_expr("{pkgs}: pkgs.hello").build()
[INFO] [stdout]     | ^^^^^^ use of undeclared type `Config`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 114 + use nix_build::Config;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/config.rs - config::Config::target_file (line 92) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Config`
[INFO] [stdout]   --> src/config.rs:93:1
[INFO] [stdout]    |
[INFO] [stdout] 93 | Config::default().target_file("hello.nix")
[INFO] [stdout]    | ^^^^^^ use of undeclared type `Config`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 92 + use nix_build::Config;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/config.rs - config::Config::arg_expr (line 70) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Config`
[INFO] [stdout]   --> src/config.rs:71:1
[INFO] [stdout]    |
[INFO] [stdout] 71 | Config::default().arg_expr("{pkgs}:pkgs.hello").arg_expr("pkgs", "import <nixpkgs> {}")
[INFO] [stdout]    | ^^^^^^ use of undeclared type `Config`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 70 + use nix_build::Config;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/config.rs - config::Config::arg_str (line 81) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Config`
[INFO] [stdout]   --> src/config.rs:82:1
[INFO] [stdout]    |
[INFO] [stdout] 82 | Config::default().arg_str("{pkgs,name}:pkgs.hello.overrideAttrs (_: {inherit name;})").arg_str("name", "not-hello")
[INFO] [stdout]    | ^^^^^^ use of undeclared type `Config`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 81 + use nix_build::Config;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - build (line 41) stdout ----
[INFO] [stdout] error[E0599]: no method named `output` found for struct `Derivation` in the current scope
[INFO] [stdout]   --> src/lib.rs:47:29
[INFO] [stdout]    |
[INFO] [stdout] 47 | let libfoo = derivations[0].output().expect("to have an 'out' derivation");
[INFO] [stdout]    |                             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: there is a method `out` with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 47 - let libfoo = derivations[0].output().expect("to have an 'out' derivation");
[INFO] [stdout] 47 + let libfoo = derivations[0].out().expect("to have an 'out' derivation");
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/config.rs - config::Config::arg_expr (line 70)
[INFO] [stdout]     src/config.rs - config::Config::arg_str (line 81)
[INFO] [stdout]     src/config.rs - config::Config::target_expr (line 114)
[INFO] [stdout]     src/config.rs - config::Config::target_file (line 92)
[INFO] [stdout]     src/config.rs - config::Config::target_flake (line 103)
[INFO] [stdout]     src/lib.rs - build (line 41)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 6 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.35s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "b2a20228e5a832515e2fc4205a184d2f7cbb582910bdacd31b29bdabcbefbe71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2a20228e5a832515e2fc4205a184d2f7cbb582910bdacd31b29bdabcbefbe71", kill_on_drop: false }`
[INFO] [stdout] b2a20228e5a832515e2fc4205a184d2f7cbb582910bdacd31b29bdabcbefbe71
