[INFO] cloning repository https://github.com/praveenperera/linker
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/praveenperera/linker" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpraveenperera%2Flinker", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpraveenperera%2Flinker'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a2de00a2b10be7e67c73fa1136c58eedc93b7f65
[INFO] testing praveenperera/linker against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpraveenperera%2Flinker" "/workspace/builds/worker-64/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-64/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/praveenperera/linker 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 git repo https://github.com/praveenperera/linker
[INFO] finished tweaking git repo https://github.com/praveenperera/linker
[INFO] tweaked toml for git repo https://github.com/praveenperera/linker written to /workspace/builds/worker-64/source/Cargo.toml
[INFO] crate git repo https://github.com/praveenperera/linker 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.70
[INFO] [stderr]   Downloaded tracing-attributes v0.1.12
[INFO] [stderr]   Downloaded openssl-sys v0.9.60
[INFO] [stderr]   Downloaded rand_core v0.6.1
[INFO] [stderr]   Downloaded tracing v0.1.23
[INFO] [stderr]   Downloaded hyper v0.14.4
[INFO] [stderr]   Downloaded tokio-util v0.6.3
[INFO] [stderr]   Downloaded futures-core v0.3.12
[INFO] [stderr]   Downloaded futures-channel v0.3.12
[INFO] [stderr]   Downloaded indenter v0.3.2
[INFO] [stderr]   Downloaded owo-colors v1.3.0
[INFO] [stderr]   Downloaded futures-task v0.3.12
[INFO] [stderr]   Downloaded eyre v0.6.5
[INFO] [stderr]   Downloaded backtrace v0.3.56
[INFO] [stderr]   Downloaded once_cell v1.5.2
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.70
[INFO] [stderr]   Downloaded color-spantrace v0.1.6
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.70
[INFO] [stderr]   Downloaded miniz_oxide v0.4.3
[INFO] [stderr]   Downloaded reqwest v0.11.0
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.70
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.20
[INFO] [stderr]   Downloaded js-sys v0.3.47
[INFO] [stderr]   Downloaded miow v0.3.6
[INFO] [stderr]   Downloaded native-tls v0.2.7
[INFO] [stderr]   Downloaded tracing-error v0.1.2
[INFO] [stderr]   Downloaded redox_syscall v0.2.4
[INFO] [stderr]   Downloaded tracing-subscriber v0.2.15
[INFO] [stderr]   Downloaded syn v1.0.60
[INFO] [stderr]   Downloaded pin-project-lite v0.2.4
[INFO] [stderr]   Downloaded thread_local v1.1.3
[INFO] [stderr]   Downloaded socket2 v0.3.19
[INFO] [stderr]   Downloaded pin-project-internal v1.0.5
[INFO] [stderr]   Downloaded env_logger v0.8.2
[INFO] [stderr]   Downloaded serde_json v1.0.62
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.70
[INFO] [stderr]   Downloaded humantime v2.1.0
[INFO] [stderr]   Downloaded sharded-slab v0.1.1
[INFO] [stderr]   Downloaded pin-project v1.0.5
[INFO] [stderr]   Downloaded futures-io v0.3.12
[INFO] [stderr]   Downloaded tracing-futures v0.2.4
[INFO] [stderr]   Downloaded httparse v1.3.5
[INFO] [stderr]   Downloaded http-body v0.4.0
[INFO] [stderr]   Downloaded futures-util v0.3.12
[INFO] [stderr]   Downloaded h2 v0.3.0
[INFO] [stderr]   Downloaded mio v0.7.7
[INFO] [stderr]   Downloaded openssl v0.10.32
[INFO] [stderr]   Downloaded regex v1.4.3
[INFO] [stderr]   Downloaded regex-syntax v0.6.22
[INFO] [stderr]   Downloaded tokio v1.2.0
[INFO] [stderr]   Downloaded idna v0.2.1
[INFO] [stderr]   Downloaded futures-sink v0.3.12
[INFO] [stderr]   Downloaded tinyvec v1.1.1
[INFO] [stderr]   Downloaded http v0.2.3
[INFO] [stderr]   Downloaded bumpalo v3.6.0
[INFO] [stderr]   Downloaded web-sys v0.3.47
[INFO] [stderr]   Downloaded color-eyre v0.5.10
[INFO] [stderr]   Downloaded serde v1.0.123
[INFO] [stderr]   Downloaded quote v1.0.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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] 1ebaa2144e5fd1a28aa1706e731af9c2a52b0a46a90a82f98c375a51fe192f61
[INFO] running `Command { std: "docker" "start" "-a" "1ebaa2144e5fd1a28aa1706e731af9c2a52b0a46a90a82f98c375a51fe192f61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ebaa2144e5fd1a28aa1706e731af9c2a52b0a46a90a82f98c375a51fe192f61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ebaa2144e5fd1a28aa1706e731af9c2a52b0a46a90a82f98c375a51fe192f61", kill_on_drop: false }`
[INFO] [stdout] 1ebaa2144e5fd1a28aa1706e731af9c2a52b0a46a90a82f98c375a51fe192f61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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] 3f983140a7bda987d3720a497d7bcc47cb942681dc65ab043ebe8b5e1802451b
[INFO] running `Command { std: "docker" "start" "-a" "3f983140a7bda987d3720a497d7bcc47cb942681dc65ab043ebe8b5e1802451b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling pin-project-lite v0.2.4
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling bytes v1.0.1
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]    Compiling futures-core v0.3.12
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling openssl v0.10.32
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling futures-sink v0.3.12
[INFO] [stderr]    Compiling httparse v1.3.5
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling futures-io v0.3.12
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling openssl-probe v0.1.2
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling try-lock v0.2.3
[INFO] [stderr]    Compiling eyre v0.6.5
[INFO] [stderr]    Compiling gimli v0.23.0
[INFO] [stderr]    Compiling httpdate v0.3.2
[INFO] [stderr]    Compiling adler v0.2.3
[INFO] [stderr]    Compiling encoding_rs v0.8.28
[INFO] [stderr]    Compiling tower-service v0.3.1
[INFO] [stderr]    Compiling rustc-demangle v0.1.18
[INFO] [stderr]    Compiling indenter v0.3.2
[INFO] [stderr]    Compiling object v0.23.0
[INFO] [stderr]    Compiling regex-syntax v0.6.22
[INFO] [stderr]    Compiling owo-colors v1.3.0
[INFO] [stderr]    Compiling mime v0.3.16
[INFO] [stderr]    Compiling ipnet v2.3.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling tokio v1.2.0
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling tracing-core v0.1.17
[INFO] [stderr]    Compiling sharded-slab v0.1.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[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-0.6.22/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -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=ea33e0b70ada9cfe -C extra-filename=-ea33e0b70ada9cfe --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" "3f983140a7bda987d3720a497d7bcc47cb942681dc65ab043ebe8b5e1802451b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f983140a7bda987d3720a497d7bcc47cb942681dc65ab043ebe8b5e1802451b", kill_on_drop: false }`
[INFO] [stdout] 3f983140a7bda987d3720a497d7bcc47cb942681dc65ab043ebe8b5e1802451b