[INFO] crate what 0.5.1 is already in cache
[INFO] checking what-0.5.1 against master#0cbcb17d3306d6e22eafc2c05ce885db97d0189c for pr-68766
[INFO] extracting crate what 0.5.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate what 0.5.1 on toolchain 0cbcb17d3306d6e22eafc2c05ce885db97d0189c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+0cbcb17d3306d6e22eafc2c05ce885db97d0189c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate what 0.5.1
[INFO] finished tweaking crates.io crate what 0.5.1
[INFO] tweaked toml for crates.io crate what 0.5.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate what 0.5.1 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+0cbcb17d3306d6e22eafc2c05ce885db97d0189c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+0cbcb17d3306d6e22eafc2c05ce885db97d0189c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f3a6706f87f130c8dd88b2239d8f04d9b645c97dcf737bcba1571d2a16caedf4
[INFO] running `"docker" "start" "-a" "f3a6706f87f130c8dd88b2239d8f04d9b645c97dcf737bcba1571d2a16caedf4"`
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]     Checking pnet_base v0.23.0
[INFO] [stderr]    Compiling pnet v0.23.0
[INFO] [stderr]     Checking bytes v0.5.0
[INFO] [stderr]     Checking itertools v0.8.1
[INFO] [stderr]     Checking getrandom v0.1.13
[INFO] [stderr]     Checking pnet_sys v0.23.0
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking socket2 v0.3.11
[INFO] [stderr]     Checking termion v1.5.3
[INFO] [stderr]     Checking termios v0.3.1
[INFO] [stderr]     Checking signal-hook-registry v1.1.1
[INFO] [stderr]     Checking clicolors-control v1.0.1
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking libflate v0.1.27
[INFO] [stderr]    Compiling syntex_errors v0.42.0
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]     Checking resolv-conf v0.6.2
[INFO] [stderr]     Checking pnet_macros_support v0.23.0
[INFO] [stderr]     Checking console v0.8.0
[INFO] [stderr]     Checking signal-hook v0.1.11
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]    Compiling syntex_syntax v0.42.0
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking procfs v0.7.4
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking tui v0.5.1
[INFO] [stderr]     Checking tokio v0.2.2
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling pest_generator v2.1.1
[INFO] [stderr]    Compiling syntex v0.42.2
[INFO] [stderr]    Compiling serde_derive v1.0.102
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling enum-as-inner v0.3.0
[INFO] [stderr]    Compiling async-trait v0.1.21
[INFO] [stderr]    Compiling structopt-derive v0.3.4
[INFO] [stderr]    Compiling derive-new v0.5.8
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling pnet_macros v0.21.0
[INFO] [stderr] error: could not compile `syntex_syntax`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syntex_syntax /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syntex_syntax-0.42.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C debuginfo=2 -C metadata=e5acbc146ce11995 -C extra-filename=-e5acbc146ce11995 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-1aa130c13f9f0246.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-2c6f2c3cde02cc14.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-6061184131103875.rmeta --extern rustc_serialize=/opt/rustwide/target/debug/deps/librustc_serialize-901d250371792b91.rmeta --extern syntex_errors=/opt/rustwide/target/debug/deps/libsyntex_errors-84c0dfc707b4fcff.rmeta --extern syntex_pos=/opt/rustwide/target/debug/deps/libsyntex_pos-ddba1ef7bf7cb25f.rmeta --extern term=/opt/rustwide/target/debug/deps/libterm-56700f36f9bb97b1.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-62354e1a7c552d7a.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 `"docker" "inspect" "f3a6706f87f130c8dd88b2239d8f04d9b645c97dcf737bcba1571d2a16caedf4"`
[INFO] running `"docker" "rm" "-f" "f3a6706f87f130c8dd88b2239d8f04d9b645c97dcf737bcba1571d2a16caedf4"`
[INFO] [stdout] f3a6706f87f130c8dd88b2239d8f04d9b645c97dcf737bcba1571d2a16caedf4