[INFO] fetching crate mechanist 0.1.0...
[INFO] testing mechanist-0.1.0 against 1.59.0 for beta-1.60-1
[INFO] extracting crate mechanist 0.1.0 into /workspace/builds/worker-28/source
[INFO] validating manifest of crates.io crate mechanist 0.1.0 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mechanist 0.1.0
[INFO] finished tweaking crates.io crate mechanist 0.1.0
[INFO] tweaked toml for crates.io crate mechanist 0.1.0 written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 644c4b96203b4e99c823f6978c5ec5aeed14d94bac650672d285f3e3942deac5
[INFO] running `Command { std: "docker" "start" "-a" "644c4b96203b4e99c823f6978c5ec5aeed14d94bac650672d285f3e3942deac5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "644c4b96203b4e99c823f6978c5ec5aeed14d94bac650672d285f3e3942deac5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "644c4b96203b4e99c823f6978c5ec5aeed14d94bac650672d285f3e3942deac5", kill_on_drop: false }`
[INFO] [stdout] 644c4b96203b4e99c823f6978c5ec5aeed14d94bac650672d285f3e3942deac5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fec557a38864bb3d7fdcdd8b7fc58fe6d7aa768a986a4a64466dd70bf094d0e0
[INFO] running `Command { std: "docker" "start" "-a" "fec557a38864bb3d7fdcdd8b7fc58fe6d7aa768a986a4a64466dd70bf094d0e0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling futures-sink v0.3.21
[INFO] [stderr]    Compiling async-trait v0.1.52
[INFO] [stderr]    Compiling tokio v1.17.0
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling futures-executor v0.3.21
[INFO] [stderr]    Compiling futures v0.3.21
[INFO] [stderr]    Compiling mechanist v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.08s
[INFO] running `Command { std: "docker" "inspect" "fec557a38864bb3d7fdcdd8b7fc58fe6d7aa768a986a4a64466dd70bf094d0e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fec557a38864bb3d7fdcdd8b7fc58fe6d7aa768a986a4a64466dd70bf094d0e0", kill_on_drop: false }`
[INFO] [stdout] fec557a38864bb3d7fdcdd8b7fc58fe6d7aa768a986a4a64466dd70bf094d0e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ce7b5779967f5a324f8b8ca69f231959a6cfd8faf35df912eab35afc3dcdf0c
[INFO] running `Command { std: "docker" "start" "-a" "3ce7b5779967f5a324f8b8ca69f231959a6cfd8faf35df912eab35afc3dcdf0c", kill_on_drop: false }`
[INFO] [stderr]    Compiling mechanist v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "3ce7b5779967f5a324f8b8ca69f231959a6cfd8faf35df912eab35afc3dcdf0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ce7b5779967f5a324f8b8ca69f231959a6cfd8faf35df912eab35afc3dcdf0c", kill_on_drop: false }`
[INFO] [stdout] 3ce7b5779967f5a324f8b8ca69f231959a6cfd8faf35df912eab35afc3dcdf0c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] da96547bfe83af689fef9744bbdecb52dc7e1ea73a9b2a9c88827e361d0b26f3
[INFO] running `Command { std: "docker" "start" "-a" "da96547bfe83af689fef9744bbdecb52dc7e1ea73a9b2a9c88827e361d0b26f3", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mechanist-301636daa3a1072c)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mechanist
[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" "da96547bfe83af689fef9744bbdecb52dc7e1ea73a9b2a9c88827e361d0b26f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da96547bfe83af689fef9744bbdecb52dc7e1ea73a9b2a9c88827e361d0b26f3", kill_on_drop: false }`
[INFO] [stdout] da96547bfe83af689fef9744bbdecb52dc7e1ea73a9b2a9c88827e361d0b26f3