[INFO] cloning repository https://github.com/themeliolabs/Mil
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/themeliolabs/Mil" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthemeliolabs%2FMil", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthemeliolabs%2FMil'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 572438689ac5d0b4a95463477902375e143b6569
[INFO] testing themeliolabs/Mil against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthemeliolabs%2FMil" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/themeliolabs/Mil on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/themeliolabs/Mil
[INFO] finished tweaking git repo https://github.com/themeliolabs/Mil
[INFO] tweaked toml for git repo https://github.com/themeliolabs/Mil written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/themeliolabs/Mil already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 86657757899ee1367c6cae765fb07bd7671b0d40247e282f61579b8116e403d0
[INFO] running `Command { std: "docker" "start" "-a" "86657757899ee1367c6cae765fb07bd7671b0d40247e282f61579b8116e403d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "86657757899ee1367c6cae765fb07bd7671b0d40247e282f61579b8116e403d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86657757899ee1367c6cae765fb07bd7671b0d40247e282f61579b8116e403d0", kill_on_drop: false }`
[INFO] [stdout] 86657757899ee1367c6cae765fb07bd7671b0d40247e282f61579b8116e403d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6d71767831064db0f0073ef35f013af7c12afe6d8b51d1bc68a0e68f8a556d11
[INFO] running `Command { std: "docker" "start" "-a" "6d71767831064db0f0073ef35f013af7c12afe6d8b51d1bc68a0e68f8a556d11", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling subtle v2.4.0
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling futures-sink v0.3.14
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling futures-core v0.3.14
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling cpuid-bool v0.1.2
[INFO] [stderr]    Compiling signature v1.3.0
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling futures-task v0.3.14
[INFO] [stderr]    Compiling constant_time_eq v0.1.5
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling slab v0.4.3
[INFO] [stderr]    Compiling futures-io v0.3.14
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling event-listener v2.5.1
[INFO] [stderr]    Compiling async-trait v0.1.50
[INFO] [stderr]    Compiling regex-syntax v0.6.23
[INFO] [stderr]    Compiling base32 v0.4.0
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling radium v0.3.0
[INFO] [stderr]    Compiling cached_proc_macro_types v0.1.0
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling defmac v0.2.1
[INFO] [stderr]    Compiling ethnum v1.0.3
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling blake3 v0.3.7
[INFO] [stderr]    Compiling num-bigint v0.3.2
[INFO] [stderr]    Compiling im v15.0.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling lock_api v0.4.3
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling fixed-hash v0.7.0
[INFO] [stderr]    Compiling ed25519 v1.0.3
[INFO] [stderr]    Compiling async-mutex v1.4.0
[INFO] [stderr]    Compiling futures-channel v0.3.14
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling bitmaps v2.1.0
[INFO] [stderr]    Compiling bitvec v0.17.4
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling crypto-mac v0.8.0
[INFO] [stderr]    Compiling sha2 v0.9.3
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling uint v0.9.0
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling sha2 v0.8.2
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling primitive-types v0.8.0
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling lexical-core v0.7.5
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.3
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_xoshiro v0.4.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling num-complex v0.3.1
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling regex v1.4.5
[INFO] [stderr]    Compiling bloomfilter v1.0.5
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling sized-chunks v0.6.5
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling num v0.3.1
[INFO] [stderr]    Compiling dashmap v4.0.2
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling syn-mid v0.5.3
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling zeroize_derive v1.1.0
[INFO] [stderr]    Compiling futures-macro v0.3.14
[INFO] [stderr]    Compiling derive_arbitrary v0.4.7
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.12
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling enum_dispatch v0.3.5
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling serde_repr v0.1.6
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling zeroize v1.3.0
[INFO] [stderr]    Compiling curve25519-dalek v3.1.0
[INFO] [stderr]    Compiling proc-macro-error v0.4.12
[INFO] [stderr]    Compiling arbitrary v0.4.7
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling cached_proc_macro v0.6.0
[INFO] [stderr]    Compiling genawaiter-proc-macro v0.99.1
[INFO] [stderr] error: could not compile `serde_derive`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name serde_derive /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_derive-1.0.125/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 --cfg 'feature="default"' -C metadata=a11803cc94dad38d -C extra-filename=-a11803cc94dad38d --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-eadab0c611d04674.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-784a93889a1f4ca7.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-60d1c7e7c2ee7cd4.rlib --extern proc_macro --cap-lints allow --cap-lints=forbid --cfg underscore_consts` (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" "6d71767831064db0f0073ef35f013af7c12afe6d8b51d1bc68a0e68f8a556d11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d71767831064db0f0073ef35f013af7c12afe6d8b51d1bc68a0e68f8a556d11", kill_on_drop: false }`
[INFO] [stdout] 6d71767831064db0f0073ef35f013af7c12afe6d8b51d1bc68a0e68f8a556d11