[INFO] crate iron-params 0.1.3 is already in cache
[INFO] extracting crate iron-params 0.1.3 into work/ex/beta-1.37-6/sources/1.36.0/reg/iron-params/0.1.3
[INFO] extracting crate iron-params 0.1.3 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/iron-params/0.1.3
[INFO] validating manifest of iron-params-0.1.3 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 iron-params-0.1.3 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 iron-params-0.1.3
[INFO] finished frobbing iron-params-0.1.3
[INFO] frobbed toml for iron-params-0.1.3 written to work/ex/beta-1.37-6/sources/1.36.0/reg/iron-params/0.1.3/Cargo.toml
[INFO] started frobbing iron-params-0.1.3
[INFO] finished frobbing iron-params-0.1.3
[INFO] frobbed toml for iron-params-0.1.3 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/iron-params/0.1.3/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] [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" "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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing iron-params-0.1.3 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/iron-params/0.1.3:/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] 13f5998903b4526271bb6dbc8a6e3938e226a353a7dbbaea67e2facb6adc7ef8
[INFO] running `"docker" "start" "-a" "13f5998903b4526271bb6dbc8a6e3938e226a353a7dbbaea67e2facb6adc7ef8"`
[INFO] [stderr]    Compiling iron-params v0.1.3 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |     let mut reader = &mut req.body;
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.16s
[INFO] running `"docker" "inspect" "13f5998903b4526271bb6dbc8a6e3938e226a353a7dbbaea67e2facb6adc7ef8"`
[INFO] running `"docker" "rm" "-f" "13f5998903b4526271bb6dbc8a6e3938e226a353a7dbbaea67e2facb6adc7ef8"`
[INFO] [stdout] 13f5998903b4526271bb6dbc8a6e3938e226a353a7dbbaea67e2facb6adc7ef8
[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/iron-params/0.1.3:/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] c211a7ad7961c9ea487704cd0a63b24dd453acf6385cc0a6672418a883690ff0
[INFO] running `"docker" "start" "-a" "c211a7ad7961c9ea487704cd0a63b24dd453acf6385cc0a6672418a883690ff0"`
[INFO] [stderr]    Compiling iron-params v0.1.3 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |     let mut reader = &mut req.body;
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.97s
[INFO] running `"docker" "inspect" "c211a7ad7961c9ea487704cd0a63b24dd453acf6385cc0a6672418a883690ff0"`
[INFO] running `"docker" "rm" "-f" "c211a7ad7961c9ea487704cd0a63b24dd453acf6385cc0a6672418a883690ff0"`
[INFO] [stdout] c211a7ad7961c9ea487704cd0a63b24dd453acf6385cc0a6672418a883690ff0
[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/iron-params/0.1.3:/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] 80588f1b55640e2d2c40113f5a0e075c83fab42e5b895bfd46426b205b89d895
[INFO] running `"docker" "start" "-a" "80588f1b55640e2d2c40113f5a0e075c83fab42e5b895bfd46426b205b89d895"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/iron_params-d8dbb071672434ce
[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] [stderr]    Doc-tests iron_params
[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" "80588f1b55640e2d2c40113f5a0e075c83fab42e5b895bfd46426b205b89d895"`
[INFO] running `"docker" "rm" "-f" "80588f1b55640e2d2c40113f5a0e075c83fab42e5b895bfd46426b205b89d895"`
[INFO] [stdout] 80588f1b55640e2d2c40113f5a0e075c83fab42e5b895bfd46426b205b89d895