[INFO] fetching crate one_err 0.0.8...
[INFO] testing one_err-0.0.8 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate one_err 0.0.8 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate one_err 0.0.8
[INFO] finished tweaking crates.io crate one_err 0.0.8
[INFO] tweaked toml for crates.io crate one_err 0.0.8 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate one_err 0.0.8 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 18 packages to latest compatible versions
[INFO] [stderr]       Adding indexmap v1.9.3 (available: v2.11.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 01940ba1a7d6a772d2a1c8559d75497861254d97f3e29532a26b6843121ce591
[INFO] running `Command { std: "docker" "start" "-a" "01940ba1a7d6a772d2a1c8559d75497861254d97f3e29532a26b6843121ce591", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "01940ba1a7d6a772d2a1c8559d75497861254d97f3e29532a26b6843121ce591", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01940ba1a7d6a772d2a1c8559d75497861254d97f3e29532a26b6843121ce591", kill_on_drop: false }`
[INFO] [stdout] 01940ba1a7d6a772d2a1c8559d75497861254d97f3e29532a26b6843121ce591
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 69de33b961c28033cd12dc363304edbbe924e28633478bf9e99c5a46a9691a4d
[INFO] running `Command { std: "docker" "start" "-a" "69de33b961c28033cd12dc363304edbbe924e28633478bf9e99c5a46a9691a4d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.176
[INFO] [stderr]    Compiling hashbrown v0.16.0
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling indexmap v2.11.4
[INFO] [stderr]    Compiling one_err v0.0.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.16s
[INFO] running `Command { std: "docker" "inspect" "69de33b961c28033cd12dc363304edbbe924e28633478bf9e99c5a46a9691a4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69de33b961c28033cd12dc363304edbbe924e28633478bf9e99c5a46a9691a4d", kill_on_drop: false }`
[INFO] [stdout] 69de33b961c28033cd12dc363304edbbe924e28633478bf9e99c5a46a9691a4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cdb978b124f0ad40c64f2c811ec009d775aae86c355db1ec6e3f7b20b3f03068
[INFO] running `Command { std: "docker" "start" "-a" "cdb978b124f0ad40c64f2c811ec009d775aae86c355db1ec6e3f7b20b3f03068", kill_on_drop: false }`
[INFO] [stderr]    Compiling one_err v0.0.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: calls to `std::str::from_utf8` with an invalid literal always return an error
[INFO] [stdout]    --> src/test.rs:104:13
[INFO] [stdout]     |
[INFO] [stdout] 104 |     let e = std::str::from_utf8(&[0, 159, 146, 150])
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^------------------^
[INFO] [stdout]     |                                  |
[INFO] [stdout]     |                                  the literal was valid UTF-8 up to the 1 bytes
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:1:9
[INFO] [stdout]     |
[INFO] [stdout]   1 | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[warn(invalid_from_utf8)]` implied by `#[warn(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `Command { std: "docker" "inspect" "cdb978b124f0ad40c64f2c811ec009d775aae86c355db1ec6e3f7b20b3f03068", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdb978b124f0ad40c64f2c811ec009d775aae86c355db1ec6e3f7b20b3f03068", kill_on_drop: false }`
[INFO] [stdout] cdb978b124f0ad40c64f2c811ec009d775aae86c355db1ec6e3f7b20b3f03068
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cc5c166392ed5b380783207068660a734c7d9835875c0ecfd1d3d22278937f13
[INFO] running `Command { std: "docker" "start" "-a" "cc5c166392ed5b380783207068660a734c7d9835875c0ecfd1d3d22278937f13", kill_on_drop: false }`
[INFO] [stderr] warning: calls to `std::str::from_utf8` with an invalid literal always return an error
[INFO] [stderr]    --> src/test.rs:104:13
[INFO] [stderr]     |
[INFO] [stderr] 104 |     let e = std::str::from_utf8(&[0, 159, 146, 150])
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^------------------^
[INFO] [stderr]     |                                  |
[INFO] [stderr]     |                                  the literal was valid UTF-8 up to the 1 bytes
[INFO] [stderr]     |
[INFO] [stderr] note: the lint level is defined here
[INFO] [stderr]    --> src/lib.rs:1:9
[INFO] [stderr]     |
[INFO] [stderr]   1 | #![deny(warnings)]
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr]     = note: `#[warn(invalid_from_utf8)]` implied by `#[warn(warnings)]`
[INFO] [stderr] 
[INFO] [stderr] warning: `one_err` (lib test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/one_err-cc5b680e32943485)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test::assert_bounds ... ok
[INFO] [stdout] test test::disp_ser_deser ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests one_err
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs - (line 106) ... ok
[INFO] [stdout] test src/lib.rs - (line 83) ... ok
[INFO] [stdout] test src/lib.rs - (line 42) ... ok
[INFO] [stdout] test src/lib.rs - (line 61) ... ok
[INFO] [stdout] test src/lib.rs - (line 23) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.81s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "cc5c166392ed5b380783207068660a734c7d9835875c0ecfd1d3d22278937f13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc5c166392ed5b380783207068660a734c7d9835875c0ecfd1d3d22278937f13", kill_on_drop: false }`
[INFO] [stdout] cc5c166392ed5b380783207068660a734c7d9835875c0ecfd1d3d22278937f13