[INFO] cloning repository https://github.com/lefishy/rl2021
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lefishy/rl2021" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flefishy%2Frl2021", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flefishy%2Frl2021'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4e44db61f5a754c23c4ef95ef64a1d0216cd1bb8
[INFO] checking lefishy/rl2021 against master#1204400ab8da9830f6f77a5e40e7ad3ea459676a for pr-94295
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flefishy%2Frl2021" "/workspace/builds/worker-37/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-37/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lefishy/rl2021 on toolchain 1204400ab8da9830f6f77a5e40e7ad3ea459676a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1204400ab8da9830f6f77a5e40e7ad3ea459676a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lefishy/rl2021
[INFO] finished tweaking git repo https://github.com/lefishy/rl2021
[INFO] tweaked toml for git repo https://github.com/lefishy/rl2021 written to /workspace/builds/worker-37/source/Cargo.toml
[INFO] crate git repo https://github.com/lefishy/rl2021 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1204400ab8da9830f6f77a5e40e7ad3ea459676a" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1204400ab8da9830f6f77a5e40e7ad3ea459676a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c3a8978f46289330fb8743a0987c7c0494af4ae19c705d4b900a90808b0e36a8
[INFO] running `Command { std: "docker" "start" "-a" "c3a8978f46289330fb8743a0987c7c0494af4ae19c705d4b900a90808b0e36a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3a8978f46289330fb8743a0987c7c0494af4ae19c705d4b900a90808b0e36a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3a8978f46289330fb8743a0987c7c0494af4ae19c705d4b900a90808b0e36a8", kill_on_drop: false }`
[INFO] [stdout] c3a8978f46289330fb8743a0987c7c0494af4ae19c705d4b900a90808b0e36a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1204400ab8da9830f6f77a5e40e7ad3ea459676a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 665a890c97f8d5bd244757bca58d97ba648771ae30001986b25c069aeb76d18d
[INFO] running `Command { std: "docker" "start" "-a" "665a890c97f8d5bd244757bca58d97ba648771ae30001986b25c069aeb76d18d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling erased-serde v0.3.16
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking atomic_refcell v0.1.7
[INFO] [stderr]    Compiling paste v1.0.5
[INFO] [stderr]     Checking scoped-tls-hkt v0.1.2
[INFO] [stderr]     Checking libloading v0.7.0
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking libloading v0.6.7
[INFO] [stderr]    Compiling wayland-sys v0.28.5
[INFO] [stderr]    Compiling nom v6.2.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking safe_arch v0.5.2
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]    Compiling wayland-scanner v0.28.5
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking crossbeam-utils v0.8.5
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking dlib v0.5.0
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking bit-set v0.5.2
[INFO] [stderr]     Checking itertools v0.10.1
[INFO] [stderr]     Checking dlib v0.4.2
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking wide v0.5.5
[INFO] [stderr]     Checking crossbeam-epoch v0.9.5
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking x11-dl v2.18.5
[INFO] [stderr]    Compiling wayland-client v0.28.5
[INFO] [stderr]    Compiling wayland-protocols v0.28.5
[INFO] [stderr]     Checking nix v0.20.0
[INFO] [stderr]     Checking nix v0.18.0
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]     Checking xcursor v0.3.3
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-1.0.73/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=1f77734080c45704 -C extra-filename=-1f77734080c45704 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-c22f143857bd0eb1.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-b999afa71eb18cfa.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-3c8a88541efd8c80.rmeta --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" "665a890c97f8d5bd244757bca58d97ba648771ae30001986b25c069aeb76d18d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "665a890c97f8d5bd244757bca58d97ba648771ae30001986b25c069aeb76d18d", kill_on_drop: false }`
[INFO] [stdout] 665a890c97f8d5bd244757bca58d97ba648771ae30001986b25c069aeb76d18d