[INFO] fetching crate knob 0.1.0...
[INFO] testing knob-0.1.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate knob 0.1.0 into /workspace/builds/worker-58/source
[INFO] validating manifest of crates.io crate knob 0.1.0 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 knob 0.1.0
[INFO] finished tweaking crates.io crate knob 0.1.0
[INFO] tweaked toml for crates.io crate knob 0.1.0 written to /workspace/builds/worker-58/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] [stderr]     Blocking waiting for file lock on package cache
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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] 17221e9a6946d22edcb26f745dd0a2b253aee06a2c9afe0940510dcd50f92279
[INFO] running `Command { std: "docker" "start" "-a" "17221e9a6946d22edcb26f745dd0a2b253aee06a2c9afe0940510dcd50f92279", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17221e9a6946d22edcb26f745dd0a2b253aee06a2c9afe0940510dcd50f92279", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17221e9a6946d22edcb26f745dd0a2b253aee06a2c9afe0940510dcd50f92279", kill_on_drop: false }`
[INFO] [stdout] 17221e9a6946d22edcb26f745dd0a2b253aee06a2c9afe0940510dcd50f92279
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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] 5cb7838d5c1b23a2f40e0082a52e6ea1553a5310450f1a8b8246d6bfa649deb1
[INFO] running `Command { std: "docker" "start" "-a" "5cb7838d5c1b23a2f40e0082a52e6ea1553a5310450f1a8b8246d6bfa649deb1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling knob v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.45s
[INFO] running `Command { std: "docker" "inspect" "5cb7838d5c1b23a2f40e0082a52e6ea1553a5310450f1a8b8246d6bfa649deb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cb7838d5c1b23a2f40e0082a52e6ea1553a5310450f1a8b8246d6bfa649deb1", kill_on_drop: false }`
[INFO] [stdout] 5cb7838d5c1b23a2f40e0082a52e6ea1553a5310450f1a8b8246d6bfa649deb1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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] 56ee169bedbeeb93c9c91b5488cfb067dd5cc8e456c0902a873666915ff4c1df
[INFO] running `Command { std: "docker" "start" "-a" "56ee169bedbeeb93c9c91b5488cfb067dd5cc8e456c0902a873666915ff4c1df", kill_on_drop: false }`
[INFO] [stderr]    Compiling knob v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "56ee169bedbeeb93c9c91b5488cfb067dd5cc8e456c0902a873666915ff4c1df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56ee169bedbeeb93c9c91b5488cfb067dd5cc8e456c0902a873666915ff4c1df", kill_on_drop: false }`
[INFO] [stdout] 56ee169bedbeeb93c9c91b5488cfb067dd5cc8e456c0902a873666915ff4c1df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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] 3e6c7112dcbdf97f4b164a33e55cad6bdb5df779f7683624a3fec28daa3743b2
[INFO] running `Command { std: "docker" "start" "-a" "3e6c7112dcbdf97f4b164a33e55cad6bdb5df779f7683624a3fec28daa3743b2", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/knob-0e867c4ea56a0bbf)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests knob
[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" "3e6c7112dcbdf97f4b164a33e55cad6bdb5df779f7683624a3fec28daa3743b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e6c7112dcbdf97f4b164a33e55cad6bdb5df779f7683624a3fec28daa3743b2", kill_on_drop: false }`
[INFO] [stdout] 3e6c7112dcbdf97f4b164a33e55cad6bdb5df779f7683624a3fec28daa3743b2