[INFO] crate cargo-outofdate 0.2.1 is already in cache
[INFO] extracting crate cargo-outofdate 0.2.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/cargo-outofdate/0.2.1
[INFO] extracting crate cargo-outofdate 0.2.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/cargo-outofdate/0.2.1
[INFO] validating manifest of cargo-outofdate-0.2.1 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 cargo-outofdate-0.2.1 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 cargo-outofdate-0.2.1
[INFO] finished frobbing cargo-outofdate-0.2.1
[INFO] frobbed toml for cargo-outofdate-0.2.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/cargo-outofdate/0.2.1/Cargo.toml
[INFO] started frobbing cargo-outofdate-0.2.1
[INFO] finished frobbing cargo-outofdate-0.2.1
[INFO] frobbed toml for cargo-outofdate-0.2.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/cargo-outofdate/0.2.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 cargo-outofdate-0.2.1 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/cargo-outofdate/0.2.1:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 1c17b36590fc8961620f50c6fad7fbadeaac3381104f515ac2e28648ade97c5d
[INFO] running `"docker" "start" "-a" "1c17b36590fc8961620f50c6fad7fbadeaac3381104f515ac2e28648ade97c5d"`
[INFO] [stderr]    Compiling strsim v0.6.0
[INFO] [stderr]    Compiling crossbeam v0.2.12
[INFO] [stderr]    Compiling serde_ignored v0.0.2
[INFO] [stderr]    Compiling toml v0.3.2
[INFO] [stderr]    Compiling tabwriter v1.1.0
[INFO] [stderr]    Compiling semver v0.6.0
[INFO] [stderr]    Compiling libgit2-sys v0.6.19
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling filetime v0.1.15
[INFO] [stderr]    Compiling tar v0.4.26
[INFO] [stderr]    Compiling curl v0.4.22
[INFO] [stderr]    Compiling structopt v0.0.5
[INFO] [stderr]    Compiling env_logger v0.4.3
[INFO] [stderr]    Compiling docopt v0.7.0
[INFO] [stderr]    Compiling chrono v0.2.25
[INFO] [stderr]    Compiling serde_codegen_internals v0.14.2
[INFO] [stderr]    Compiling structopt-derive v0.0.5
[INFO] [stderr]    Compiling serde_derive v0.9.15
[INFO] [stderr]    Compiling crates-io v0.8.0
[INFO] [stderr]    Compiling git2 v0.6.11
[INFO] [stderr]    Compiling git2-curl v0.7.0
[INFO] [stderr]    Compiling cargo v0.19.0
[INFO] [stderr]    Compiling cargo-outofdate v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(attr_literals)]
[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 E0554`.
[INFO] [stderr] error: Could not compile `cargo-outofdate`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "1c17b36590fc8961620f50c6fad7fbadeaac3381104f515ac2e28648ade97c5d"`
[INFO] running `"docker" "rm" "-f" "1c17b36590fc8961620f50c6fad7fbadeaac3381104f515ac2e28648ade97c5d"`
[INFO] [stdout] 1c17b36590fc8961620f50c6fad7fbadeaac3381104f515ac2e28648ade97c5d