[INFO] fetching crate stackblur 0.1.0...
[INFO] testing stackblur-0.1.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate stackblur 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate stackblur 0.1.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stackblur 0.1.0
[INFO] finished tweaking crates.io crate stackblur 0.1.0
[INFO] tweaked toml for crates.io crate stackblur 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate stackblur 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8ba5064ae70696edab82628e44644d0904fb11c75ee1ba7ed250a0641b192f41
[INFO] running `Command { std: "docker" "start" "-a" "8ba5064ae70696edab82628e44644d0904fb11c75ee1ba7ed250a0641b192f41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ba5064ae70696edab82628e44644d0904fb11c75ee1ba7ed250a0641b192f41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ba5064ae70696edab82628e44644d0904fb11c75ee1ba7ed250a0641b192f41", kill_on_drop: false }`
[INFO] [stdout] 8ba5064ae70696edab82628e44644d0904fb11c75ee1ba7ed250a0641b192f41
[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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 23b47f88b1ed322f7e709e4d79e75057c01f0d7c9b99b2dee0acb14350c39f1a
[INFO] running `Command { std: "docker" "start" "-a" "23b47f88b1ed322f7e709e4d79e75057c01f0d7c9b99b2dee0acb14350c39f1a", kill_on_drop: false }`
[INFO] [stderr]    Compiling stackblur v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "23b47f88b1ed322f7e709e4d79e75057c01f0d7c9b99b2dee0acb14350c39f1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23b47f88b1ed322f7e709e4d79e75057c01f0d7c9b99b2dee0acb14350c39f1a", kill_on_drop: false }`
[INFO] [stdout] 23b47f88b1ed322f7e709e4d79e75057c01f0d7c9b99b2dee0acb14350c39f1a
[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" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a38001f6b55fc5f517c2ad68a0b028312c98a3e000f8e4b66cf59eaca9ab38cb
[INFO] running `Command { std: "docker" "start" "-a" "a38001f6b55fc5f517c2ad68a0b028312c98a3e000f8e4b66cf59eaca9ab38cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling deflate v0.8.6
[INFO] [stderr]    Compiling png v0.16.8
[INFO] [stderr]    Compiling stackblur v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.63s
[INFO] running `Command { std: "docker" "inspect" "a38001f6b55fc5f517c2ad68a0b028312c98a3e000f8e4b66cf59eaca9ab38cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a38001f6b55fc5f517c2ad68a0b028312c98a3e000f8e4b66cf59eaca9ab38cb", kill_on_drop: false }`
[INFO] [stdout] a38001f6b55fc5f517c2ad68a0b028312c98a3e000f8e4b66cf59eaca9ab38cb
[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" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 115cdde15bab14ba0d1de60db414dbe10821f369b94f409da1a3c480f6116af6
[INFO] running `Command { std: "docker" "start" "-a" "115cdde15bab14ba0d1de60db414dbe10821f369b94f409da1a3c480f6116af6", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/stackblur-4a30c00bd44929a2)
[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] [stderr]    Doc-tests stackblur
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 10) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.26s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "115cdde15bab14ba0d1de60db414dbe10821f369b94f409da1a3c480f6116af6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "115cdde15bab14ba0d1de60db414dbe10821f369b94f409da1a3c480f6116af6", kill_on_drop: false }`
[INFO] [stdout] 115cdde15bab14ba0d1de60db414dbe10821f369b94f409da1a3c480f6116af6