[INFO] updating cached repository madadam/rust-async-experiments
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/madadam/rust-async-experiments
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/madadam/rust-async-experiments" "work/ex/beta-1.38-1/sources/1.37.0/gh/madadam/rust-async-experiments"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/madadam/rust-async-experiments'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/madadam/rust-async-experiments" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/madadam/rust-async-experiments"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/madadam/rust-async-experiments'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6e420cfbc4852492603239c1fa08ddd827cbe6d6
[INFO] sha for GitHub repo madadam/rust-async-experiments: 6e420cfbc4852492603239c1fa08ddd827cbe6d6
[INFO] validating manifest of madadam/rust-async-experiments 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 madadam/rust-async-experiments 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 madadam/rust-async-experiments
[INFO] finished frobbing madadam/rust-async-experiments
[INFO] frobbed toml for madadam/rust-async-experiments written to work/ex/beta-1.38-1/sources/1.37.0/gh/madadam/rust-async-experiments/Cargo.toml
[INFO] started frobbing madadam/rust-async-experiments
[INFO] finished frobbing madadam/rust-async-experiments
[INFO] frobbed toml for madadam/rust-async-experiments written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/madadam/rust-async-experiments/Cargo.toml
[INFO] crate madadam/rust-async-experiments 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 madadam/rust-async-experiments 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-7/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/madadam/rust-async-experiments:/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] 5583770d05c314d6c9432f3eaeec3232bad70f3f171aafa0bc3e96a28781b89b
[INFO] running `"docker" "start" "-a" "5583770d05c314d6c9432f3eaeec3232bad70f3f171aafa0bc3e96a28781b89b"`
[INFO] [stderr]    Compiling rustc-serialize v0.3.19
[INFO] [stderr]    Compiling unwrap v1.1.0
[INFO] [stderr]    Compiling rand v0.3.14
[INFO] [stderr]    Compiling unicode-bidi v0.2.3
[INFO] [stderr]    Compiling net2 v0.2.26
[INFO] [stderr]    Compiling nix v0.5.1
[INFO] [stderr]    Compiling toml v0.1.30
[INFO] [stderr]    Compiling humantime v0.1.3
[INFO] [stderr]    Compiling futures v0.1.1 (https://github.com/alexcrichton/futures-rs#59de7fe6)
[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 aho-corasick v0.5.3
[INFO] [stderr]    Compiling typemap v0.3.3
[INFO] [stderr]    Compiling idna v0.1.0
[INFO] [stderr]    Compiling ordered-float v0.1.0
[INFO] [stderr]    Compiling miow v0.1.3
[INFO] [stderr]    Compiling time v0.1.35
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling fs2 v0.2.5
[INFO] [stderr]    Compiling serde-value v0.2.1
[INFO] [stderr]    Compiling thread_local v0.2.7
[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" "5583770d05c314d6c9432f3eaeec3232bad70f3f171aafa0bc3e96a28781b89b"`
[INFO] running `"docker" "rm" "-f" "5583770d05c314d6c9432f3eaeec3232bad70f3f171aafa0bc3e96a28781b89b"`
[INFO] [stdout] 5583770d05c314d6c9432f3eaeec3232bad70f3f171aafa0bc3e96a28781b89b