[INFO] cloning repository https://github.com/cobalt-org/cobalt.rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cobalt-org/cobalt.rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcobalt-org%2Fcobalt.rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcobalt-org%2Fcobalt.rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c44233244bf84eebdd047e86cafd3ddd4f728d02
[INFO] checking cobalt-org/cobalt.rs against master#fc81ad22c453776de16acf9938976930cf8c9401 for pr-77325
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcobalt-org%2Fcobalt.rs" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cobalt-org/cobalt.rs on toolchain fc81ad22c453776de16acf9938976930cf8c9401
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cobalt-org/cobalt.rs
[INFO] finished tweaking git repo https://github.com/cobalt-org/cobalt.rs
[INFO] tweaked toml for git repo https://github.com/cobalt-org/cobalt.rs written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/cobalt-org/cobalt.rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+fc81ad22c453776de16acf9938976930cf8c9401" "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] 778869f362c549b5ed1697d21ecb3c08c00dd65272c5cbe95a4d73c84b024aaf
[INFO] running `Command { std: "docker" "start" "-a" "778869f362c549b5ed1697d21ecb3c08c00dd65272c5cbe95a4d73c84b024aaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "778869f362c549b5ed1697d21ecb3c08c00dd65272c5cbe95a4d73c84b024aaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "778869f362c549b5ed1697d21ecb3c08c00dd65272c5cbe95a4d73c84b024aaf", kill_on_drop: false }`
[INFO] [stdout] 778869f362c549b5ed1697d21ecb3c08c00dd65272c5cbe95a4d73c84b024aaf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+fc81ad22c453776de16acf9938976930cf8c9401" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 8795a2ffcd2cd54bcf532d89c734db8afd789b95538cdda5707cc9384416a995
[INFO] running `Command { std: "docker" "start" "-a" "8795a2ffcd2cd54bcf532d89c734db8afd789b95538cdda5707cc9384416a995", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]    Compiling rustversion v1.0.5
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]     Checking xml-rs v0.8.3
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking normalize-line-endings v0.3.0
[INFO] [stderr]     Checking anymap v0.12.1
[INFO] [stderr]     Checking deunicode v1.3.0
[INFO] [stderr]    Compiling pulldown-cmark v0.8.0
[INFO] [stderr]     Checking numerals v0.1.4
[INFO] [stderr]     Checking predicates-core v1.0.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking macro-utils v0.1.3
[INFO] [stderr]     Checking bytecount v0.6.2
[INFO] [stderr]     Checking relative-path v1.4.0
[INFO] [stderr]     Checking chunked_transfer v1.4.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking treeline v0.1.0
[INFO] [stderr]     Checking ascii v1.0.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking cow-utils v0.1.2
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]    Compiling backtrace v0.3.59
[INFO] [stderr]     Checking unicode-bidi v0.3.5
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking itertools v0.10.0
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking line-wrap v0.1.1
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking html-escape v0.2.9
[INFO] [stderr]     Checking minifier v0.0.41
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]     Checking predicates-tree v1.0.2
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking unicode-normalization v0.1.18
[INFO] [stderr]     Checking crc32fast v1.2.1
[INFO] [stderr]     Checking encoding_rs v0.8.28
[INFO] [stderr]     Checking crossbeam-utils v0.8.5
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking inotify-sys v0.1.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking filetime v0.2.14
[INFO] [stderr]     Checking which v4.1.0
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking bstr v0.2.16
[INFO] [stderr]     Checking bitvec v0.19.5
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking dirs v3.0.2
[INFO] [stderr]     Checking inotify v0.7.1
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking walkdir v0.1.8
[INFO] [stderr]     Checking open v1.7.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking shellexpand v2.1.0
[INFO] [stderr]     Checking fancy-regex v0.3.5
[INFO] [stderr]     Checking stfu8 v0.2.4
[INFO] [stderr]     Checking env_logger v0.8.3
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]     Checking globset v0.4.6
[INFO] [stderr]    Compiling mime_guess v2.0.3
[INFO] [stderr]     Checking ghp v0.1.2
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking voca_rs v1.13.0
[INFO] [stderr]     Checking float-cmp v0.8.0
[INFO] [stderr]    Compiling proc-quote-impl v0.3.2
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking predicates v1.0.8
[INFO] [stderr]     Checking notify v4.0.17
[INFO] [stderr]     Checking quick-xml v0.20.0
[INFO] [stderr]     Checking ignore v0.4.17
[INFO] [stderr]    Compiling sass-sys v0.4.21
[INFO] [stderr]     Checking error-chain v0.10.0
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking assert_cmd v1.0.4
[INFO] [stderr]     Checking globwalk v0.8.1
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking assert_fs v1.0.2
[INFO] [stderr] error: could not compile `num-bigint`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name num_bigint --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/num-bigint-0.4.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="std"' -C metadata=e98ba4f3beed447f -C extra-filename=-e98ba4f3beed447f --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern num_integer=/opt/rustwide/target/debug/deps/libnum_integer-569a7038e52a8995.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-2a4f13f859376b69.rmeta --cap-lints allow --cap-lints=forbid --cfg u64_digit --cfg has_try_from --cfg use_addcarry` (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" "8795a2ffcd2cd54bcf532d89c734db8afd789b95538cdda5707cc9384416a995", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8795a2ffcd2cd54bcf532d89c734db8afd789b95538cdda5707cc9384416a995", kill_on_drop: false }`
[INFO] [stdout] 8795a2ffcd2cd54bcf532d89c734db8afd789b95538cdda5707cc9384416a995