[INFO] fetching crate maestro 0.0.0...
[INFO] testing maestro-0.0.0 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate maestro 0.0.0 into /workspace/builds/worker-37/source
[INFO] validating manifest of crates.io crate maestro 0.0.0 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate maestro 0.0.0
[INFO] finished tweaking crates.io crate maestro 0.0.0
[INFO] tweaked toml for crates.io crate maestro 0.0.0 written to /workspace/builds/worker-37/source/Cargo.toml
[INFO] crate crates.io crate maestro 0.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ded8f8490ac91d002464205f6d6ccffce95c90721ef049dc6dd2efd920b246b0
[INFO] running `Command { std: "docker" "start" "-a" "ded8f8490ac91d002464205f6d6ccffce95c90721ef049dc6dd2efd920b246b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ded8f8490ac91d002464205f6d6ccffce95c90721ef049dc6dd2efd920b246b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ded8f8490ac91d002464205f6d6ccffce95c90721ef049dc6dd2efd920b246b0", kill_on_drop: false }`
[INFO] [stdout] ded8f8490ac91d002464205f6d6ccffce95c90721ef049dc6dd2efd920b246b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e149044b619b2c3cd57ca15d52c373bb67a26ca2458734798ce128452543f76
[INFO] running `Command { std: "docker" "start" "-a" "1e149044b619b2c3cd57ca15d52c373bb67a26ca2458734798ce128452543f76", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling maestro v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.10s
[INFO] running `Command { std: "docker" "inspect" "1e149044b619b2c3cd57ca15d52c373bb67a26ca2458734798ce128452543f76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e149044b619b2c3cd57ca15d52c373bb67a26ca2458734798ce128452543f76", kill_on_drop: false }`
[INFO] [stdout] 1e149044b619b2c3cd57ca15d52c373bb67a26ca2458734798ce128452543f76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e722295e5e1f8b5f4b0902de60445ed4df9e8c314d4ae145cb0695b081c5dcff
[INFO] running `Command { std: "docker" "start" "-a" "e722295e5e1f8b5f4b0902de60445ed4df9e8c314d4ae145cb0695b081c5dcff", kill_on_drop: false }`
[INFO] [stderr]    Compiling maestro v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "e722295e5e1f8b5f4b0902de60445ed4df9e8c314d4ae145cb0695b081c5dcff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e722295e5e1f8b5f4b0902de60445ed4df9e8c314d4ae145cb0695b081c5dcff", kill_on_drop: false }`
[INFO] [stdout] e722295e5e1f8b5f4b0902de60445ed4df9e8c314d4ae145cb0695b081c5dcff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bacb0dbd15acb0e98deb8b60f307d628092ea1035e4052fb05e36ed7908de2e4
[INFO] running `Command { std: "docker" "start" "-a" "bacb0dbd15acb0e98deb8b60f307d628092ea1035e4052fb05e36ed7908de2e4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.70s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/maestro-f77aa9389be8170f)
[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" "bacb0dbd15acb0e98deb8b60f307d628092ea1035e4052fb05e36ed7908de2e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bacb0dbd15acb0e98deb8b60f307d628092ea1035e4052fb05e36ed7908de2e4", kill_on_drop: false }`
[INFO] [stdout] bacb0dbd15acb0e98deb8b60f307d628092ea1035e4052fb05e36ed7908de2e4