[INFO] crate rust-github 0.1.1 is already in cache
[INFO] extracting crate rust-github 0.1.1 into work/ex/beta-1.37-6/sources/1.36.0/reg/rust-github/0.1.1
[INFO] extracting crate rust-github 0.1.1 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/rust-github/0.1.1
[INFO] validating manifest of rust-github-0.1.1 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rust-github-0.1.1 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rust-github-0.1.1
[INFO] finished frobbing rust-github-0.1.1
[INFO] frobbed toml for rust-github-0.1.1 written to work/ex/beta-1.37-6/sources/1.36.0/reg/rust-github/0.1.1/Cargo.toml
[INFO] started frobbing rust-github-0.1.1
[INFO] finished frobbing rust-github-0.1.1
[INFO] frobbed toml for rust-github-0.1.1 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/rust-github/0.1.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing rust-github-0.1.1 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/rust-github/0.1.1:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 3465e0bf2eed69ecb3c70077954c222c08538c774a345910b28763a9456ee7c6
[INFO] running `"docker" "start" "-a" "3465e0bf2eed69ecb3c70077954c222c08538c774a345910b28763a9456ee7c6"`
[INFO] [stderr]    Compiling rust-github v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] error: expected identifier, found `"rustc-serialize"`
[INFO] [stderr]  --> src/lib.rs:5:14
[INFO] [stderr]   |
[INFO] [stderr] 5 | extern crate "rustc-serialize" as rustc_serialize;
[INFO] [stderr]   |              ^^^^^^^^^^^^^^^^^ expected identifier
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rust-github`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "3465e0bf2eed69ecb3c70077954c222c08538c774a345910b28763a9456ee7c6"`
[INFO] running `"docker" "rm" "-f" "3465e0bf2eed69ecb3c70077954c222c08538c774a345910b28763a9456ee7c6"`
[INFO] [stdout] 3465e0bf2eed69ecb3c70077954c222c08538c774a345910b28763a9456ee7c6