[INFO] cloning repository https://github.com/io12/brainfsym
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/io12/brainfsym" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fio12%2Fbrainfsym", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fio12%2Fbrainfsym'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] da3357fdfeee7e1905799339a1ecc6be2154b1da
[INFO] checking io12/brainfsym against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fio12%2Fbrainfsym" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/io12/brainfsym on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/io12/brainfsym
[INFO] finished tweaking git repo https://github.com/io12/brainfsym
[INFO] tweaked toml for git repo https://github.com/io12/brainfsym written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/io12/brainfsym already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/prove-rs/z3.rs`
[INFO] [stderr]     Updating git submodule `https://github.com/Z3Prover/z3.git`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded brainfuck_rs v2.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3f67f0bec9e4bdc1a1848370a2d43b9bfdc6683c1ade71bc47f505781ff5235d
[INFO] running `Command { std: "docker" "start" "-a" "3f67f0bec9e4bdc1a1848370a2d43b9bfdc6683c1ade71bc47f505781ff5235d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f67f0bec9e4bdc1a1848370a2d43b9bfdc6683c1ade71bc47f505781ff5235d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f67f0bec9e4bdc1a1848370a2d43b9bfdc6683c1ade71bc47f505781ff5235d", kill_on_drop: false }`
[INFO] [stdout] 3f67f0bec9e4bdc1a1848370a2d43b9bfdc6683c1ade71bc47f505781ff5235d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=forbid" "-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7594c0ca56951068b97b3a068a486f3fca1f7adbfeef93a65ce8551052fb5443
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7594c0ca56951068b97b3a068a486f3fca1f7adbfeef93a65ce8551052fb5443", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling cmake v0.1.42
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling z3-sys v0.5.0 (https://github.com/prove-rs/z3.rs#fc39f328)
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking brainfuck_rs v2.0.0
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr] error: could not compile `darling_macro`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name darling_macro /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/darling_macro-0.10.2/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type proc-macro --emit=dep-info,link -C prefer-dynamic -C embed-bitcode=no -C debuginfo=2 -C metadata=2a9655dab44444a8 -C extra-filename=-2a9655dab44444a8 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern darling_core=/opt/rustwide/target/debug/deps/libdarling_core-21ee68c7510a4cd8.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-bbc2cdf98041cfa8.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-b4504b597814a8ad.rlib --extern proc_macro --cap-lints allow --cap-lints=forbid` (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" "7594c0ca56951068b97b3a068a486f3fca1f7adbfeef93a65ce8551052fb5443", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7594c0ca56951068b97b3a068a486f3fca1f7adbfeef93a65ce8551052fb5443", kill_on_drop: false }`
[INFO] [stdout] 7594c0ca56951068b97b3a068a486f3fca1f7adbfeef93a65ce8551052fb5443