[INFO] cloning repository https://github.com/tbro/rusty-recommends
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tbro/rusty-recommends" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftbro%2Frusty-recommends", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftbro%2Frusty-recommends'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1f5de6d8076baa49fec3409a4c537090205fa948
[INFO] checking tbro/rusty-recommends against 1.55.0 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftbro%2Frusty-recommends" "/workspace/builds/worker-31/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-31/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tbro/rusty-recommends 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 git repo https://github.com/tbro/rusty-recommends
[INFO] finished tweaking git repo https://github.com/tbro/rusty-recommends
[INFO] tweaked toml for git repo https://github.com/tbro/rusty-recommends written to /workspace/builds/worker-31/source/Cargo.toml
[INFO] crate git repo https://github.com/tbro/rusty-recommends 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] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.10
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[INFO] [stderr]   Downloaded hyper v0.13.5
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[INFO] [stderr]   Downloaded synstructure v0.12.3
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[INFO] [stderr]   Downloaded derive_builder v0.7.2
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[INFO] [stderr]   Downloaded heck v0.3.1
[INFO] [stderr]   Downloaded quote v0.6.13
[INFO] [stderr]   Downloaded syn v0.15.44
[INFO] [stderr]   Downloaded pkg-config v0.3.17
[INFO] [stderr]   Downloaded dtoa v0.4.5
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[INFO] [stderr]   Downloaded aho-corasick v0.7.10
[INFO] [stderr]   Downloaded proc-macro-error v0.4.12
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[INFO] [stderr]   Downloaded thiserror v1.0.15
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[INFO] [stderr]   Downloaded remove_dir_all v0.5.2
[INFO] [stderr]   Downloaded js-sys v0.3.37
[INFO] [stderr]   Downloaded futures-util v0.3.4
[INFO] [stderr]   Downloaded regex v1.3.7
[INFO] [stderr]   Downloaded redox_syscall v0.1.56
[INFO] [stderr]   Downloaded chrono v0.4.11
[INFO] [stderr]   Downloaded serde_json v1.0.51
[INFO] [stderr]   Downloaded regex-syntax v0.6.17
[INFO] [stderr]   Downloaded core-foundation v0.7.0
[INFO] [stderr]   Downloaded backtrace-sys v0.1.36
[INFO] [stderr]   Downloaded winapi v0.3.8
[INFO] [stderr]   Downloaded rand_hc v0.2.0
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[INFO] [stderr]   Downloaded rspotify v0.9.0
[INFO] [stderr]   Downloaded byteorder v1.3.4
[INFO] [stderr]   Downloaded strsim v0.10.0
[INFO] [stderr]   Downloaded atty v0.2.14
[INFO] [stderr]   Downloaded tokio-socks v0.2.2
[INFO] [stderr]   Downloaded web-sys v0.3.37
[INFO] [stderr]   Downloaded serde v1.0.106
[INFO] [stderr]   Downloaded ryu v1.0.4
[INFO] [stderr]   Downloaded slab v0.4.2
[INFO] [stderr]   Downloaded proc-macro2 v1.0.10
[INFO] [stderr]   Downloaded rand_chacha v0.2.2
[INFO] [stderr]   Downloaded libc v0.2.69
[INFO] [stderr]   Downloaded tokio v0.2.19
[INFO] [stderr]   Downloaded tempfile v3.1.0
[INFO] [stderr]   Downloaded futures-io v0.3.4
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[INFO] [stderr]   Downloaded darling v0.9.0
[INFO] [stderr]   Downloaded encoding_rs v0.8.22
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[INFO] [stderr]   Downloaded security-framework v0.4.3
[INFO] [stderr]   Downloaded idna v0.2.0
[INFO] [stderr]   Downloaded getrandom v0.1.14
[INFO] [stderr]   Downloaded darling_macro v0.9.0
[INFO] [stderr]   Downloaded proc-macro2 v0.4.30
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[INFO] [stderr]   Downloaded memchr v2.3.3
[INFO] [stderr]   Downloaded native-tls v0.2.4
[INFO] [stderr]   Downloaded tokio-macros v0.2.5
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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] fdd5ccbe86b64808966e8854d164d8626e417a35eb67de9e6740a8c5e9e9c61a
[INFO] running `Command { std: "docker" "start" "-a" "fdd5ccbe86b64808966e8854d164d8626e417a35eb67de9e6740a8c5e9e9c61a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fdd5ccbe86b64808966e8854d164d8626e417a35eb67de9e6740a8c5e9e9c61a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fdd5ccbe86b64808966e8854d164d8626e417a35eb67de9e6740a8c5e9e9c61a", kill_on_drop: false }`
[INFO] [stdout] fdd5ccbe86b64808966e8854d164d8626e417a35eb67de9e6740a8c5e9e9c61a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 49225ddb717c69f550727f2d89ca18df287460c64d5b3a6b1899179a34023efd
[INFO] running `Command { std: "docker" "start" "-a" "49225ddb717c69f550727f2d89ca18df287460c64d5b3a6b1899179a34023efd", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling cc v1.0.52
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking futures-core v0.3.4
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]     Checking bytes v0.5.4
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]    Compiling proc-macro-nested v0.1.4
[INFO] [stderr]     Checking futures-sink v0.3.4
[INFO] [stderr]    Compiling proc-macro-hack v0.5.15
[INFO] [stderr]     Checking arc-swap v0.4.6
[INFO] [stderr]     Checking futures-task v0.3.4
[INFO] [stderr]     Checking futures-io v0.3.4
[INFO] [stderr]     Checking pin-project-lite v0.1.4
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking smallvec v1.4.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling openssl v0.10.29
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]    Compiling failure_derive v0.1.7
[INFO] [stderr]     Checking try-lock v0.2.2
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling encoding_rs v0.8.22
[INFO] [stderr]     Checking tower-service v0.3.0
[INFO] [stderr]    Compiling derive_builder v0.7.2
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking dtoa v0.4.5
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking base64 v0.11.0
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking random v0.12.2
[INFO] [stderr]     Checking os_str_bytes v2.1.0
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking webbrowser v0.5.2
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.12
[INFO] [stderr]    Compiling proc-macro-error v0.4.12
[INFO] [stderr] error: could not compile `regex-syntax`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name regex_syntax /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-syntax-0.6.17/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="unicode"' --cfg 'feature="unicode-age"' --cfg 'feature="unicode-bool"' --cfg 'feature="unicode-case"' --cfg 'feature="unicode-gencat"' --cfg 'feature="unicode-perl"' --cfg 'feature="unicode-script"' --cfg 'feature="unicode-segment"' -C metadata=dc7cf541bc2f2603 -C extra-filename=-dc7cf541bc2f2603 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "49225ddb717c69f550727f2d89ca18df287460c64d5b3a6b1899179a34023efd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49225ddb717c69f550727f2d89ca18df287460c64d5b3a6b1899179a34023efd", kill_on_drop: false }`
[INFO] [stdout] 49225ddb717c69f550727f2d89ca18df287460c64d5b3a6b1899179a34023efd
