[INFO] fetching crate mut 0.0.0...
[INFO] testing mut-0.0.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate mut 0.0.0 into /workspace/builds/worker-36/source
[INFO] validating manifest of crates.io crate mut 0.0.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mut 0.0.0
[INFO] finished tweaking crates.io crate mut 0.0.0
[INFO] tweaked toml for crates.io crate mut 0.0.0 written to /workspace/builds/worker-36/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1eb13dbb517dfe7f11402f22f61772b634231abbc0b6f584a9a2e73910ab0199
[INFO] running `Command { std: "docker" "start" "-a" "1eb13dbb517dfe7f11402f22f61772b634231abbc0b6f584a9a2e73910ab0199", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1eb13dbb517dfe7f11402f22f61772b634231abbc0b6f584a9a2e73910ab0199", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1eb13dbb517dfe7f11402f22f61772b634231abbc0b6f584a9a2e73910ab0199", kill_on_drop: false }`
[INFO] [stdout] 1eb13dbb517dfe7f11402f22f61772b634231abbc0b6f584a9a2e73910ab0199
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e19481ed927ee1f553c884c5771dbf16f4b5f25df131ef0986e618d3033737cc
[INFO] running `Command { std: "docker" "start" "-a" "e19481ed927ee1f553c884c5771dbf16f4b5f25df131ef0986e618d3033737cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling mut v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `Command { std: "docker" "inspect" "e19481ed927ee1f553c884c5771dbf16f4b5f25df131ef0986e618d3033737cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e19481ed927ee1f553c884c5771dbf16f4b5f25df131ef0986e618d3033737cc", kill_on_drop: false }`
[INFO] [stdout] e19481ed927ee1f553c884c5771dbf16f4b5f25df131ef0986e618d3033737cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9cbdc070bb269fd80fea44f068a6509a3a04015d75911413b1b61d20d99744db
[INFO] running `Command { std: "docker" "start" "-a" "9cbdc070bb269fd80fea44f068a6509a3a04015d75911413b1b61d20d99744db", kill_on_drop: false }`
[INFO] [stderr]    Compiling mut v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "9cbdc070bb269fd80fea44f068a6509a3a04015d75911413b1b61d20d99744db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cbdc070bb269fd80fea44f068a6509a3a04015d75911413b1b61d20d99744db", kill_on_drop: false }`
[INFO] [stdout] 9cbdc070bb269fd80fea44f068a6509a3a04015d75911413b1b61d20d99744db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 40970ab31897811a93ff15b4ae89fb17025908e142891135e9216fed9bce7cc6
[INFO] running `Command { std: "docker" "start" "-a" "40970ab31897811a93ff15b4ae89fb17025908e142891135e9216fed9bce7cc6", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.24s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mut-ba2f5e6c4ec75287)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mut
[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] [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" "40970ab31897811a93ff15b4ae89fb17025908e142891135e9216fed9bce7cc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40970ab31897811a93ff15b4ae89fb17025908e142891135e9216fed9bce7cc6", kill_on_drop: false }`
[INFO] [stdout] 40970ab31897811a93ff15b4ae89fb17025908e142891135e9216fed9bce7cc6