[INFO] fetching crate standback 0.4.0...
[INFO] testing standback-0.4.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate standback 0.4.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate standback 0.4.0 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 standback 0.4.0
[INFO] finished tweaking crates.io crate standback 0.4.0
[INFO] tweaked toml for crates.io crate standback 0.4.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] ad877c1d1d938be7f978365d81220c9f7349e0271e565aec0e3f60eb73cda082
[INFO] running `Command { std: "docker" "start" "-a" "ad877c1d1d938be7f978365d81220c9f7349e0271e565aec0e3f60eb73cda082", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad877c1d1d938be7f978365d81220c9f7349e0271e565aec0e3f60eb73cda082", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad877c1d1d938be7f978365d81220c9f7349e0271e565aec0e3f60eb73cda082", kill_on_drop: false }`
[INFO] [stdout] ad877c1d1d938be7f978365d81220c9f7349e0271e565aec0e3f60eb73cda082
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 4ee36e7c8b202bc4b4cf61f552b61277a1e25f4a981d0a8f9e2dcf8f7f79c449
[INFO] running `Command { std: "docker" "start" "-a" "4ee36e7c8b202bc4b4cf61f552b61277a1e25f4a981d0a8f9e2dcf8f7f79c449", kill_on_drop: false }`
[INFO] [stderr]    Compiling easy-ext v1.0.0
[INFO] [stderr]    Compiling standback v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.34s
[INFO] running `Command { std: "docker" "inspect" "4ee36e7c8b202bc4b4cf61f552b61277a1e25f4a981d0a8f9e2dcf8f7f79c449", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ee36e7c8b202bc4b4cf61f552b61277a1e25f4a981d0a8f9e2dcf8f7f79c449", kill_on_drop: false }`
[INFO] [stdout] 4ee36e7c8b202bc4b4cf61f552b61277a1e25f4a981d0a8f9e2dcf8f7f79c449
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 8d2e0ac36109d3b763edd42b2bc0ed2e866a1294da7bd08c2efd3a08f7061928
[INFO] running `Command { std: "docker" "start" "-a" "8d2e0ac36109d3b763edd42b2bc0ed2e866a1294da7bd08c2efd3a08f7061928", kill_on_drop: false }`
[INFO] [stderr]    Compiling standback v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `Command { std: "docker" "inspect" "8d2e0ac36109d3b763edd42b2bc0ed2e866a1294da7bd08c2efd3a08f7061928", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d2e0ac36109d3b763edd42b2bc0ed2e866a1294da7bd08c2efd3a08f7061928", kill_on_drop: false }`
[INFO] [stdout] 8d2e0ac36109d3b763edd42b2bc0ed2e866a1294da7bd08c2efd3a08f7061928
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 4b426b5591de7f0a87647d9913bef5939d44a9b9575b0f737c77a6001590b2fa
[INFO] running `Command { std: "docker" "start" "-a" "4b426b5591de7f0a87647d9913bef5939d44a9b9575b0f737c77a6001590b2fa", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/standback-c8f8b55741210d6e)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests standback
[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 2 tests
[INFO] [stdout] test src/lib.rs - (line 17) - compile ... ok
[INFO] [stdout] test src/lib.rs - (line 24) - compile ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.13s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4b426b5591de7f0a87647d9913bef5939d44a9b9575b0f737c77a6001590b2fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b426b5591de7f0a87647d9913bef5939d44a9b9575b0f737c77a6001590b2fa", kill_on_drop: false }`
[INFO] [stdout] 4b426b5591de7f0a87647d9913bef5939d44a9b9575b0f737c77a6001590b2fa