[INFO] updating cached repository FreeMasen/estree-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/FreeMasen/estree-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/FreeMasen/estree-rs" "work/ex/beta-1.37-6/sources/1.36.0/gh/FreeMasen/estree-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/FreeMasen/estree-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/FreeMasen/estree-rs" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/FreeMasen/estree-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/FreeMasen/estree-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7abbebdd1dfbaa6f418a5dc07ecccb70e254b23e
[INFO] sha for GitHub repo FreeMasen/estree-rs: 7abbebdd1dfbaa6f418a5dc07ecccb70e254b23e
[INFO] validating manifest of FreeMasen/estree-rs 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 FreeMasen/estree-rs 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 FreeMasen/estree-rs
[INFO] finished frobbing FreeMasen/estree-rs
[INFO] frobbed toml for FreeMasen/estree-rs written to work/ex/beta-1.37-6/sources/1.36.0/gh/FreeMasen/estree-rs/Cargo.toml
[INFO] started frobbing FreeMasen/estree-rs
[INFO] finished frobbing FreeMasen/estree-rs
[INFO] frobbed toml for FreeMasen/estree-rs written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/FreeMasen/estree-rs/Cargo.toml
[INFO] crate FreeMasen/estree-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing FreeMasen/estree-rs 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-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/FreeMasen/estree-rs:/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] af9071bad47840c1af7179a471fa072f9663ac43c0c4afc254e32b158235e4ed
[INFO] running `"docker" "start" "-a" "af9071bad47840c1af7179a471fa072f9663ac43c0c4afc254e32b158235e4ed"`
[INFO] [stderr]    Compiling estree-rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `argument`
[INFO] [stderr]   --> src/lib.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 |     argument: Box<Expression>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `"docker" "inspect" "af9071bad47840c1af7179a471fa072f9663ac43c0c4afc254e32b158235e4ed"`
[INFO] running `"docker" "rm" "-f" "af9071bad47840c1af7179a471fa072f9663ac43c0c4afc254e32b158235e4ed"`
[INFO] [stdout] af9071bad47840c1af7179a471fa072f9663ac43c0c4afc254e32b158235e4ed
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/FreeMasen/estree-rs:/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" "test" "--frozen" "--no-run"`
[INFO] [stdout] 40d6af9b65bc7df57b5b78dec38ae03cc9f4b931a9161ec74eb514ad65e04aaf
[INFO] running `"docker" "start" "-a" "40d6af9b65bc7df57b5b78dec38ae03cc9f4b931a9161ec74eb514ad65e04aaf"`
[INFO] [stderr]    Compiling estree-rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `argument`
[INFO] [stderr]   --> src/lib.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 |     argument: Box<Expression>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `"docker" "inspect" "40d6af9b65bc7df57b5b78dec38ae03cc9f4b931a9161ec74eb514ad65e04aaf"`
[INFO] running `"docker" "rm" "-f" "40d6af9b65bc7df57b5b78dec38ae03cc9f4b931a9161ec74eb514ad65e04aaf"`
[INFO] [stdout] 40d6af9b65bc7df57b5b78dec38ae03cc9f4b931a9161ec74eb514ad65e04aaf
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/FreeMasen/estree-rs:/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" "test" "--frozen"`
[INFO] [stdout] fcd14e8a46dd9c254c1c1043ade13b923a04e4a1f1df76ddcb8a3ff2810b8359
[INFO] running `"docker" "start" "-a" "fcd14e8a46dd9c254c1c1043ade13b923a04e4a1f1df76ddcb8a3ff2810b8359"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/estree_rs-27c5bd394cc5100b
[INFO] [stderr]    Doc-tests estree-rs
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "fcd14e8a46dd9c254c1c1043ade13b923a04e4a1f1df76ddcb8a3ff2810b8359"`
[INFO] running `"docker" "rm" "-f" "fcd14e8a46dd9c254c1c1043ade13b923a04e4a1f1df76ddcb8a3ff2810b8359"`
[INFO] [stdout] fcd14e8a46dd9c254c1c1043ade13b923a04e4a1f1df76ddcb8a3ff2810b8359