[INFO] crate wesers 0.4.1 is already in cache
[INFO] testing wesers-0.4.1 against beta-2019-09-28 for beta-1.39-1
[INFO] extracting crate wesers 0.4.1 into work/builds/worker-2/source
[INFO] validating manifest of crates.io crate wesers 0.4.1 on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate wesers 0.4.1
[INFO] finished tweaking crates.io crate wesers 0.4.1
[INFO] tweaked toml for crates.io crate wesers 0.4.1 written to work/builds/worker-2/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] b6f00fa982ed46401c33a65c7e82e3cac3fbe59e52a29d6d867e1802a9cdc073
[INFO] running `"docker" "start" "-a" "b6f00fa982ed46401c33a65c7e82e3cac3fbe59e52a29d6d867e1802a9cdc073"`
[INFO] [stderr]    Compiling sequence_trie v0.0.13
[INFO] [stderr]    Compiling mustache v0.7.0
[INFO] [stderr]    Compiling wesers v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling iron v0.4.0
[INFO] [stderr] error: environment variable `OUT_DIR` not defined
[INFO] [stderr]   --> build.rs:10:38
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let cargo_target_dir = Path::new(env!("OUT_DIR"))
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `wesers`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "b6f00fa982ed46401c33a65c7e82e3cac3fbe59e52a29d6d867e1802a9cdc073"`
[INFO] running `"docker" "rm" "-f" "b6f00fa982ed46401c33a65c7e82e3cac3fbe59e52a29d6d867e1802a9cdc073"`
[INFO] [stdout] b6f00fa982ed46401c33a65c7e82e3cac3fbe59e52a29d6d867e1802a9cdc073