[INFO] fetching crate imager-engine 0.0.0...
[INFO] testing imager-engine-0.0.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate imager-engine 0.0.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate imager-engine 0.0.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate imager-engine 0.0.0
[INFO] finished tweaking crates.io crate imager-engine 0.0.0
[INFO] tweaked toml for crates.io crate imager-engine 0.0.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate imager-engine 0.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 575719ab4801e63058c5c6ab8124369f8a260094a66a56662e27ade6f5072180
[INFO] running `Command { std: "docker" "start" "-a" "575719ab4801e63058c5c6ab8124369f8a260094a66a56662e27ade6f5072180", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "575719ab4801e63058c5c6ab8124369f8a260094a66a56662e27ade6f5072180", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "575719ab4801e63058c5c6ab8124369f8a260094a66a56662e27ade6f5072180", kill_on_drop: false }`
[INFO] [stdout] 575719ab4801e63058c5c6ab8124369f8a260094a66a56662e27ade6f5072180
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d48d714bf474dd828dd0aab53c038f04960f2f09e9da6777effa69ba54611935
[INFO] running `Command { std: "docker" "start" "-a" "d48d714bf474dd828dd0aab53c038f04960f2f09e9da6777effa69ba54611935", kill_on_drop: false }`
[INFO] [stderr]    Compiling imager-engine v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "d48d714bf474dd828dd0aab53c038f04960f2f09e9da6777effa69ba54611935", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d48d714bf474dd828dd0aab53c038f04960f2f09e9da6777effa69ba54611935", kill_on_drop: false }`
[INFO] [stdout] d48d714bf474dd828dd0aab53c038f04960f2f09e9da6777effa69ba54611935
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 418daba6cebb6b8201aacbe5c2f40a264c31f111d57c849ccb17cdf5439a461d
[INFO] running `Command { std: "docker" "start" "-a" "418daba6cebb6b8201aacbe5c2f40a264c31f111d57c849ccb17cdf5439a461d", kill_on_drop: false }`
[INFO] [stderr]    Compiling imager-engine v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "418daba6cebb6b8201aacbe5c2f40a264c31f111d57c849ccb17cdf5439a461d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "418daba6cebb6b8201aacbe5c2f40a264c31f111d57c849ccb17cdf5439a461d", kill_on_drop: false }`
[INFO] [stdout] 418daba6cebb6b8201aacbe5c2f40a264c31f111d57c849ccb17cdf5439a461d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 77ea4c90eba5328efdf4e63fdc0e6bf1e96ca37d2f0e3fd07bb6552de58c2b5e
[INFO] running `Command { std: "docker" "start" "-a" "77ea4c90eba5328efdf4e63fdc0e6bf1e96ca37d2f0e3fd07bb6552de58c2b5e", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/imager_engine-512a572f61ebbd48)
[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" "77ea4c90eba5328efdf4e63fdc0e6bf1e96ca37d2f0e3fd07bb6552de58c2b5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77ea4c90eba5328efdf4e63fdc0e6bf1e96ca37d2f0e3fd07bb6552de58c2b5e", kill_on_drop: false }`
[INFO] [stdout] 77ea4c90eba5328efdf4e63fdc0e6bf1e96ca37d2f0e3fd07bb6552de58c2b5e