[INFO] updating cached repository https://github.com/KodrAus/intro-to-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] 2b3ec50aff7c4dd9b4e1593d1af87409b442f8fc
[INFO] checking KodrAus/intro-to-rust against try#1a608893c03d7722effeb0058e82770bd36b4b3c for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKodrAus%2Fintro-to-rust" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/KodrAus/intro-to-rust on toolchain 1a608893c03d7722effeb0058e82770bd36b4b3c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/KodrAus/intro-to-rust
[INFO] finished tweaking git repo https://github.com/KodrAus/intro-to-rust
[INFO] tweaked toml for git repo https://github.com/KodrAus/intro-to-rust written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/KodrAus/intro-to-rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "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] 2bd28f54595bd51832bcf387ef0014711c0c5043d2ab2e73ef2fdd879b0c20e7
[INFO] running `"docker" "start" "-a" "2bd28f54595bd51832bcf387ef0014711c0c5043d2ab2e73ef2fdd879b0c20e7"`
[INFO] [stderr]     Checking libc v0.2.15
[INFO] [stderr]     Checking matches v0.1.2
[INFO] [stderr]     Checking unicode-normalization v0.1.2
[INFO] [stderr]     Checking rustc-serialize v0.3.19
[INFO] [stderr]     Checking httparse v1.1.2
[INFO] [stderr]     Checking regex-syntax v0.3.4
[INFO] [stderr]     Checking quick-error v1.1.0
[INFO] [stderr]     Checking pest v0.3.3
[INFO] [stderr]     Checking route-recognizer v0.1.11
[INFO] [stderr]     Checking unsafe-any v0.4.1
[INFO] [stderr]     Checking error v0.1.9
[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 unicode-bidi v0.2.3
[INFO] [stderr]     Checking num_cpus v0.2.13
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]     Checking time v0.1.35
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking walkdir v0.1.5
[INFO] [stderr]     Checking aho-corasick v0.5.2
[INFO] [stderr]     Checking idna v0.1.0
[INFO] [stderr]     Checking plugin v0.2.6
[INFO] [stderr]     Checking thread_local v0.2.6
[INFO] [stderr]     Checking regex v0.1.73
[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" "2bd28f54595bd51832bcf387ef0014711c0c5043d2ab2e73ef2fdd879b0c20e7"`
[INFO] running `"docker" "rm" "-f" "2bd28f54595bd51832bcf387ef0014711c0c5043d2ab2e73ef2fdd879b0c20e7"`
[INFO] [stdout] 2bd28f54595bd51832bcf387ef0014711c0c5043d2ab2e73ef2fdd879b0c20e7