[INFO] cloning repository JanMH/mi5-coding-challenge
[INFO] running `"git" "clone" "--bare" "git://github.com/JanMH/mi5-coding-challenge.git" "work/cache/sources/gh/JanMH/mi5-coding-challenge"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/JanMH/mi5-coding-challenge'...
[INFO] running `"git" "clone" "work/cache/sources/gh/JanMH/mi5-coding-challenge" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/JanMH/mi5-coding-challenge"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/JanMH/mi5-coding-challenge'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/JanMH/mi5-coding-challenge" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/JanMH/mi5-coding-challenge"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/JanMH/mi5-coding-challenge'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b5e688f96c71d0a84304d0b4d788dbe8abdc27d0
[INFO] sha for GitHub repo JanMH/mi5-coding-challenge: b5e688f96c71d0a84304d0b4d788dbe8abdc27d0
[INFO] validating manifest of JanMH/mi5-coding-challenge on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of JanMH/mi5-coding-challenge on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing JanMH/mi5-coding-challenge
[INFO] finished frobbing JanMH/mi5-coding-challenge
[INFO] frobbed toml for JanMH/mi5-coding-challenge written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/JanMH/mi5-coding-challenge/Cargo.toml
[INFO] started frobbing JanMH/mi5-coding-challenge
[INFO] finished frobbing JanMH/mi5-coding-challenge
[INFO] frobbed toml for JanMH/mi5-coding-challenge written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/JanMH/mi5-coding-challenge/Cargo.toml
[INFO] crate JanMH/mi5-coding-challenge already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking JanMH/mi5-coding-challenge against try#8f81d0bf6baf07b92f1246696722485c4ca0b049 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-3/try#8f81d0bf6baf07b92f1246696722485c4ca0b049:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/JanMH/mi5-coding-challenge:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a8e9c1eb62c3bc6b482017fb01a81117e775471b5b0c4ae41eb12b7c9f18b833
[INFO] running `"docker" "start" "-a" "a8e9c1eb62c3bc6b482017fb01a81117e775471b5b0c4ae41eb12b7c9f18b833"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rustc-serialize v0.3.19
[INFO] [stderr]     Checking rayon v0.4.0
[INFO] [stderr]     Checking png v0.5.2
[INFO] [stderr] error[E0642]: patterns aren't allowed in methods without bodies
[INFO] [stderr]    --> /opt/crater/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 jpeg-decoder v0.1.6
[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" "a8e9c1eb62c3bc6b482017fb01a81117e775471b5b0c4ae41eb12b7c9f18b833"`
[INFO] running `"docker" "rm" "-f" "a8e9c1eb62c3bc6b482017fb01a81117e775471b5b0c4ae41eb12b7c9f18b833"`
[INFO] [stdout] a8e9c1eb62c3bc6b482017fb01a81117e775471b5b0c4ae41eb12b7c9f18b833