[INFO] updating cached repository lochsh/colourblind-helper
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/lochsh/colourblind-helper
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/lochsh/colourblind-helper" "work/ex/beta-1.38-1/sources/1.37.0/gh/lochsh/colourblind-helper"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/lochsh/colourblind-helper'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/lochsh/colourblind-helper" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lochsh/colourblind-helper"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lochsh/colourblind-helper'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 122dff0804bddfca2bf25e81c03a4e11e535ea15
[INFO] sha for GitHub repo lochsh/colourblind-helper: 122dff0804bddfca2bf25e81c03a4e11e535ea15
[INFO] validating manifest of lochsh/colourblind-helper on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of lochsh/colourblind-helper on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing lochsh/colourblind-helper
[INFO] finished frobbing lochsh/colourblind-helper
[INFO] frobbed toml for lochsh/colourblind-helper written to work/ex/beta-1.38-1/sources/1.37.0/gh/lochsh/colourblind-helper/Cargo.toml
[INFO] started frobbing lochsh/colourblind-helper
[INFO] finished frobbing lochsh/colourblind-helper
[INFO] frobbed toml for lochsh/colourblind-helper written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lochsh/colourblind-helper/Cargo.toml
[INFO] crate lochsh/colourblind-helper already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing lochsh/colourblind-helper against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lochsh/colourblind-helper:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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=warn" "-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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 9fb4de74d896fcaa8b77b056cf6a343a1e6c76a42b708213d3863ad4ce0edde3
[INFO] running `"docker" "start" "-a" "9fb4de74d896fcaa8b77b056cf6a343a1e6c76a42b708213d3863ad4ce0edde3"`
[INFO] [stderr]    Compiling gcc v0.3.39
[INFO] [stderr]    Compiling rustc-serialize v0.3.19
[INFO] [stderr]    Compiling utf8-ranges v0.1.3
[INFO] [stderr]    Compiling regex-syntax v0.3.9
[INFO] [stderr]    Compiling log v0.3.6
[INFO] [stderr]    Compiling byteorder v0.5.3
[INFO] [stderr]    Compiling lzw v0.10.0
[INFO] [stderr]    Compiling color_quant v1.0.0
[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]    Compiling inflate v0.1.1
[INFO] [stderr]    Compiling custom_derive v0.1.7
[INFO] [stderr]    Compiling scoped_threadpool v0.1.7
[INFO] [stderr]    Compiling itertools v0.4.19
[INFO] [stderr]    Compiling either v1.0.2
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling num_cpus v1.2.0
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0642`.
[INFO] [stderr]    Compiling gif v0.9.0
[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" "9fb4de74d896fcaa8b77b056cf6a343a1e6c76a42b708213d3863ad4ce0edde3"`
[INFO] running `"docker" "rm" "-f" "9fb4de74d896fcaa8b77b056cf6a343a1e6c76a42b708213d3863ad4ce0edde3"`
[INFO] [stdout] 9fb4de74d896fcaa8b77b056cf6a343a1e6c76a42b708213d3863ad4ce0edde3