[INFO] fetching crate mutex_logger 1.0.0...
[INFO] testing mutex_logger-1.0.0 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate mutex_logger 1.0.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate mutex_logger 1.0.0
[INFO] finished tweaking crates.io crate mutex_logger 1.0.0
[INFO] tweaked toml for crates.io crate mutex_logger 1.0.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mutex_logger 1.0.0 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "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-2025-10-28" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 12 packages to latest compatible versions
[INFO] [stderr]       Adding colored v2.2.0 (available: v3.0.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 48c5d7b3b7480a275ecec41f4fea221499fc8543e3478b0bf3562a19bf35028d
[INFO] running `Command { std: "docker" "start" "-a" "48c5d7b3b7480a275ecec41f4fea221499fc8543e3478b0bf3562a19bf35028d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48c5d7b3b7480a275ecec41f4fea221499fc8543e3478b0bf3562a19bf35028d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48c5d7b3b7480a275ecec41f4fea221499fc8543e3478b0bf3562a19bf35028d", kill_on_drop: false }`
[INFO] [stdout] 48c5d7b3b7480a275ecec41f4fea221499fc8543e3478b0bf3562a19bf35028d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ebb08390151f957b9273a3e1de281cb4b53815ef2c477340d270f653d8228676
[INFO] running `Command { std: "docker" "start" "-a" "ebb08390151f957b9273a3e1de281cb4b53815ef2c477340d270f653d8228676", kill_on_drop: false }`
[INFO] [stderr]    Compiling mutex_logger v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "ebb08390151f957b9273a3e1de281cb4b53815ef2c477340d270f653d8228676", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebb08390151f957b9273a3e1de281cb4b53815ef2c477340d270f653d8228676", kill_on_drop: false }`
[INFO] [stdout] ebb08390151f957b9273a3e1de281cb4b53815ef2c477340d270f653d8228676
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b0daacaeb29ac6b797b8ae6fde7e53f77fe55bbb42516bf00d4055177f7eb794
[INFO] running `Command { std: "docker" "start" "-a" "b0daacaeb29ac6b797b8ae6fde7e53f77fe55bbb42516bf00d4055177f7eb794", kill_on_drop: false }`
[INFO] [stderr]    Compiling mutex_logger v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "b0daacaeb29ac6b797b8ae6fde7e53f77fe55bbb42516bf00d4055177f7eb794", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0daacaeb29ac6b797b8ae6fde7e53f77fe55bbb42516bf00d4055177f7eb794", kill_on_drop: false }`
[INFO] [stdout] b0daacaeb29ac6b797b8ae6fde7e53f77fe55bbb42516bf00d4055177f7eb794
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1688ec4f841fc6459422b666db6725bb289ce64f76e68d68f0b169785a0af5a7
[INFO] running `Command { std: "docker" "start" "-a" "1688ec4f841fc6459422b666db6725bb289ce64f76e68d68f0b169785a0af5a7", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mutex_logger-f694a5a42bce7fa1)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::can_print_logs ... ok
[INFO] [stdout] test tests::can_print_verbos_logs ... ok
[INFO] [stdout] test tests::prints_logs_correctly ... ok
[INFO] [stderr]    Doc-tests mutex_logger
[INFO] [stdout] test tests::can_rewrite_logs ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[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] running `Command { std: "docker" "inspect" "1688ec4f841fc6459422b666db6725bb289ce64f76e68d68f0b169785a0af5a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1688ec4f841fc6459422b666db6725bb289ce64f76e68d68f0b169785a0af5a7", kill_on_drop: false }`
[INFO] [stdout] 1688ec4f841fc6459422b666db6725bb289ce64f76e68d68f0b169785a0af5a7