[INFO] updating cached repository https://github.com/Mark-Simulacrum/cargo-issues-3094
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/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] 99ca9ed76540fa2a3f859b95c110169299c1655b
[INFO] testing Mark-Simulacrum/cargo-issues-3094 against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FMark-Simulacrum%2Fcargo-issues-3094" "work/builds/worker-9/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Mark-Simulacrum/cargo-issues-3094 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Mark-Simulacrum/cargo-issues-3094
[INFO] finished tweaking git repo https://github.com/Mark-Simulacrum/cargo-issues-3094
[INFO] tweaked toml for git repo https://github.com/Mark-Simulacrum/cargo-issues-3094 written to work/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/Mark-Simulacrum/cargo-issues-3094 already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] dd6a83f70bc45ef45b37523aa2cce367e3d38c2722e4eb7796b612ab3aa292b2
[INFO] running `"docker" "start" "-a" "dd6a83f70bc45ef45b37523aa2cce367e3d38c2722e4eb7796b612ab3aa292b2"`
[INFO] [stderr]    Compiling rustc-serialize v0.3.19
[INFO] [stderr]    Compiling num-traits v0.1.35
[INFO] [stderr]    Compiling serde v0.8.8
[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] 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" "dd6a83f70bc45ef45b37523aa2cce367e3d38c2722e4eb7796b612ab3aa292b2"`
[INFO] running `"docker" "rm" "-f" "dd6a83f70bc45ef45b37523aa2cce367e3d38c2722e4eb7796b612ab3aa292b2"`
[INFO] [stdout] dd6a83f70bc45ef45b37523aa2cce367e3d38c2722e4eb7796b612ab3aa292b2