[INFO] updating cached repository https://github.com/fusion2004/are_we_web_yet_rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 143c1ed31df6a9ba10347ef30156728e181859d1
[INFO] checking fusion2004/are_we_web_yet_rust against master#30ca215b4e38b32aa7abdd635c5e2d56f5724494 for pr-66037
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffusion2004%2Fare_we_web_yet_rust" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fusion2004/are_we_web_yet_rust on toolchain 30ca215b4e38b32aa7abdd635c5e2d56f5724494
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/fusion2004/are_we_web_yet_rust
[INFO] finished tweaking git repo https://github.com/fusion2004/are_we_web_yet_rust
[INFO] tweaked toml for git repo https://github.com/fusion2004/are_we_web_yet_rust written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/fusion2004/are_we_web_yet_rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "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" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "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] 7220f02ac82579be7622364144a4cbea28a7217a0d234d8035fa50b70f32a60f
[INFO] running `"docker" "start" "-a" "7220f02ac82579be7622364144a4cbea28a7217a0d234d8035fa50b70f32a60f"`
[INFO] [stderr]    Compiling pq-sys v0.2.3
[INFO] [stderr]     Checking rustc-serialize v0.3.19
[INFO] [stderr]    Compiling regex-syntax v0.3.4
[INFO] [stderr]    Compiling byteorder v0.3.13
[INFO] [stderr]    Compiling diesel_codegen_syntex v0.7.2
[INFO] [stderr]     Checking ansi_term v0.8.0
[INFO] [stderr]     Checking serde v0.8.4
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]     Checking rand v0.3.14
[INFO] [stderr] error[E0642]: patterns aren't allowed in methods without bodies
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.3.19/src/serialize.rs:147:45
[INFO] [stderr]     |
[INFO] [stderr] 147 | ...                   &f_name: &str,
[INFO] [stderr]     |                       ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Checking term_size v0.1.0
[INFO] [stderr]     Checking error v0.1.9
[INFO] [stderr]     Checking bit-set v0.2.0
[INFO] [stderr]     Checking idna v0.1.0
[INFO] [stderr]    Compiling aho-corasick v0.5.2
[INFO] [stderr]     Checking clap v2.10.3
[INFO] [stderr]     Checking term v0.4.4
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0642`.
[INFO] [stderr] error: could not compile `rustc-serialize`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "7220f02ac82579be7622364144a4cbea28a7217a0d234d8035fa50b70f32a60f"`
[INFO] running `"docker" "rm" "-f" "7220f02ac82579be7622364144a4cbea28a7217a0d234d8035fa50b70f32a60f"`
[INFO] [stdout] 7220f02ac82579be7622364144a4cbea28a7217a0d234d8035fa50b70f32a60f