[INFO] cloning repository https://github.com/themeliolabs/melminter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/themeliolabs/melminter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthemeliolabs%2Fmelminter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthemeliolabs%2Fmelminter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 33eca57324bcde6c638af57d84966d4c32fea7f7
[INFO] testing themeliolabs/melminter against 1.55.0 for beta-1.56-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthemeliolabs%2Fmelminter" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/themeliolabs/melminter 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/themeliolabs/melminter
[INFO] finished tweaking git repo https://github.com/themeliolabs/melminter
[INFO] tweaked toml for git repo https://github.com/themeliolabs/melminter written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/themeliolabs/melminter 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 90e5c9418d04d1f34bf7addd55d747a9db8db4abdebc208902a31ad04c70deb0
[INFO] running `Command { std: "docker" "start" "-a" "90e5c9418d04d1f34bf7addd55d747a9db8db4abdebc208902a31ad04c70deb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90e5c9418d04d1f34bf7addd55d747a9db8db4abdebc208902a31ad04c70deb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90e5c9418d04d1f34bf7addd55d747a9db8db4abdebc208902a31ad04c70deb0", kill_on_drop: false }`
[INFO] [stdout] 90e5c9418d04d1f34bf7addd55d747a9db8db4abdebc208902a31ad04c70deb0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f53a86646e8c473e547a3b3777dd9f1aa65b5bce6074a004c63ba2c7f162322c
[INFO] running `Command { std: "docker" "start" "-a" "f53a86646e8c473e547a3b3777dd9f1aa65b5bce6074a004c63ba2c7f162322c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling futures-core v0.3.16
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.7
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling futures-io v0.3.16
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling event-listener v2.5.1
[INFO] [stderr]    Compiling cache-padded v1.1.1
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling slab v0.4.3
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling fastrand v1.5.0
[INFO] [stderr]    Compiling waker-fn v1.1.0
[INFO] [stderr]    Compiling async-task v4.0.3
[INFO] [stderr]    Compiling atomic-waker v1.0.0
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling crossbeam-queue v0.3.2
[INFO] [stderr]    Compiling cpufeatures v0.1.5
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling anyhow v1.0.42
[INFO] [stderr]    Compiling futures-task v0.3.16
[INFO] [stderr]    Compiling const_fn v0.4.8
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling futures-channel v0.3.16
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling futures-sink v0.3.16
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling untrusted v0.7.1
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling signal-hook v0.3.9
[INFO] [stderr]    Compiling radium v0.6.2
[INFO] [stderr]    Compiling async-trait v0.1.51
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]    Compiling gimli v0.25.0
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling http-types v2.11.1
[INFO] [stderr]    Compiling signature v1.3.1
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling httparse v1.4.1
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling constant_time_eq v0.1.5
[INFO] [stderr]    Compiling data-encoding v2.3.2
[INFO] [stderr]    Compiling base64 v0.13.0
[INFO] [stderr]    Compiling infer v0.2.3
[INFO] [stderr]    Compiling genawaiter-macro v0.99.1
[INFO] [stderr]    Compiling futures-micro v0.3.1
[INFO] [stderr]    Compiling tap v1.0.1
[INFO] [stderr]    Compiling wyz v0.2.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.20
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling funty v1.1.0
[INFO] [stderr]    Compiling base32 v0.4.0
[INFO] [stderr]    Compiling rustversion v1.0.5
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling base64 v0.12.3
[INFO] [stderr]    Compiling pin-project-lite v0.1.12
[INFO] [stderr]    Compiling spin v0.9.2
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling ethnum v1.0.3
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling cached_proc_macro_types v0.1.0
[INFO] [stderr]    Compiling defmac v0.2.1
[INFO] [stderr]    Compiling min-max-heap v1.3.0
[INFO] [stderr]    Compiling by_address v1.0.4
[INFO] [stderr]    Compiling mime v0.3.16
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling futures-macro v0.3.16
[INFO] [stderr]    Compiling instant v0.1.10
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-bigint v0.3.2
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling tracing-core v0.1.18
[INFO] [stderr]    Compiling tokio v1.9.0
[INFO] [stderr]    Compiling sharded-slab v0.1.3
[INFO] [stderr]    Compiling async-mutex v1.4.0
[INFO] [stderr]    Compiling async-lock v2.4.0
[INFO] [stderr]    Compiling simple-mutex v1.1.5
[INFO] [stderr]    Compiling lock_api v0.4.4
[INFO] [stderr]    Compiling unicode-bidi v0.3.5
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling concurrent-queue v1.2.2
[INFO] [stderr]    Compiling rtrb v0.1.4
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling tinyvec v1.3.1
[INFO] [stderr]    Compiling ed25519 v1.2.0
[INFO] [stderr]    Compiling async-oneshot v0.4.2
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.7
[INFO] [stderr]    Compiling standback v0.2.17
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.12
[INFO] [stderr]    Compiling proc-macro-error v0.4.12
[INFO] [stderr]    Compiling time v0.2.27
[INFO] [stderr]    Compiling cookie v0.14.4
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling im v15.0.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling async-dup v1.2.2
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling async-channel v1.6.1
[INFO] [stderr]    Compiling bitvec v0.20.4
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling byte-pool v0.2.3
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling blake3 v0.3.8
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]    Compiling unicode-normalization v0.1.19
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling futures-lite v1.12.0
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling object v0.26.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling socket2 v0.4.1
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling dirs-sys v0.3.6
[INFO] [stderr]    Compiling bitmaps v2.1.0
[INFO] [stderr]    Compiling addr2line v0.16.0
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling mime_guess v2.0.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling colored v2.0.0
[INFO] [stderr]    Compiling dashmap v4.0.2
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling dirs v3.0.2
[INFO] [stderr]    Compiling matchers v0.0.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_xoshiro v0.4.0
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling cipher v0.2.5
[INFO] [stderr]    Compiling universal-hash v0.4.1
[INFO] [stderr]    Compiling crypto-mac v0.10.1
[INFO] [stderr]    Compiling aead v0.3.2
[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 --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-syntax-0.6.25/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=b77be10fdde4f88a -C extra-filename=-b77be10fdde4f88a --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" "f53a86646e8c473e547a3b3777dd9f1aa65b5bce6074a004c63ba2c7f162322c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f53a86646e8c473e547a3b3777dd9f1aa65b5bce6074a004c63ba2c7f162322c", kill_on_drop: false }`
[INFO] [stdout] f53a86646e8c473e547a3b3777dd9f1aa65b5bce6074a004c63ba2c7f162322c