[INFO] fetching crate exercise-sample 0.1.0...
[INFO] testing exercise-sample-0.1.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate exercise-sample 0.1.0 into /workspace/builds/worker-53/source
[INFO] validating manifest of crates.io crate exercise-sample 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 exercise-sample 0.1.0
[INFO] finished tweaking crates.io crate exercise-sample 0.1.0
[INFO] tweaked toml for crates.io crate exercise-sample 0.1.0 written to /workspace/builds/worker-53/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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] f21b4204ed6a7094890c9430074c6ee904ff7a4b9cbac627e06ab65ce69724c2
[INFO] running `Command { std: "docker" "start" "-a" "f21b4204ed6a7094890c9430074c6ee904ff7a4b9cbac627e06ab65ce69724c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f21b4204ed6a7094890c9430074c6ee904ff7a4b9cbac627e06ab65ce69724c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f21b4204ed6a7094890c9430074c6ee904ff7a4b9cbac627e06ab65ce69724c2", kill_on_drop: false }`
[INFO] [stdout] f21b4204ed6a7094890c9430074c6ee904ff7a4b9cbac627e06ab65ce69724c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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] d01fd88d15773a7a67d53b615ee5a796728fd6b55831299cd3ff9bf868817108
[INFO] running `Command { std: "docker" "start" "-a" "d01fd88d15773a7a67d53b615ee5a796728fd6b55831299cd3ff9bf868817108", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling exercise-sample v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 37s
[INFO] running `Command { std: "docker" "inspect" "d01fd88d15773a7a67d53b615ee5a796728fd6b55831299cd3ff9bf868817108", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d01fd88d15773a7a67d53b615ee5a796728fd6b55831299cd3ff9bf868817108", kill_on_drop: false }`
[INFO] [stdout] d01fd88d15773a7a67d53b615ee5a796728fd6b55831299cd3ff9bf868817108
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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] 3e0bd6957a79bb6b68152319449665e77416292ea1dbccda75753bef1a0478fc
[INFO] running `Command { std: "docker" "start" "-a" "3e0bd6957a79bb6b68152319449665e77416292ea1dbccda75753bef1a0478fc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling exercise-sample v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.33s
[INFO] running `Command { std: "docker" "inspect" "3e0bd6957a79bb6b68152319449665e77416292ea1dbccda75753bef1a0478fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e0bd6957a79bb6b68152319449665e77416292ea1dbccda75753bef1a0478fc", kill_on_drop: false }`
[INFO] [stdout] 3e0bd6957a79bb6b68152319449665e77416292ea1dbccda75753bef1a0478fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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] fcfae948d59644342c74c48ae9eceda09ccff8a264dd3f0f48570b6ca1d517ab
[INFO] running `Command { std: "docker" "start" "-a" "fcfae948d59644342c74c48ae9eceda09ccff8a264dd3f0f48570b6ca1d517ab", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.32s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/exercise_sample-2e74967138709dd1)
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests exercise-sample
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 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" "fcfae948d59644342c74c48ae9eceda09ccff8a264dd3f0f48570b6ca1d517ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcfae948d59644342c74c48ae9eceda09ccff8a264dd3f0f48570b6ca1d517ab", kill_on_drop: false }`
[INFO] [stdout] fcfae948d59644342c74c48ae9eceda09ccff8a264dd3f0f48570b6ca1d517ab