[INFO] cloning repository illicitonion/cargo-2018-use-repro
[INFO] running `"git" "clone" "--bare" "git://github.com/illicitonion/cargo-2018-use-repro.git" "work/cache/sources/gh/illicitonion/cargo-2018-use-repro"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/illicitonion/cargo-2018-use-repro'...
[INFO] running `"git" "clone" "work/cache/sources/gh/illicitonion/cargo-2018-use-repro" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/illicitonion/cargo-2018-use-repro"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/illicitonion/cargo-2018-use-repro'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/illicitonion/cargo-2018-use-repro" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/illicitonion/cargo-2018-use-repro"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/illicitonion/cargo-2018-use-repro'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 62c898a70f9baab942325b9e0dece32c5c0fc1fc
[INFO] sha for GitHub repo illicitonion/cargo-2018-use-repro: 62c898a70f9baab942325b9e0dece32c5c0fc1fc
[INFO] validating manifest of illicitonion/cargo-2018-use-repro on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of illicitonion/cargo-2018-use-repro on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing illicitonion/cargo-2018-use-repro
[INFO] finished frobbing illicitonion/cargo-2018-use-repro
[INFO] frobbed toml for illicitonion/cargo-2018-use-repro written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/illicitonion/cargo-2018-use-repro/Cargo.toml
[INFO] started frobbing illicitonion/cargo-2018-use-repro
[INFO] finished frobbing illicitonion/cargo-2018-use-repro
[INFO] frobbed toml for illicitonion/cargo-2018-use-repro written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/illicitonion/cargo-2018-use-repro/Cargo.toml
[INFO] crate illicitonion/cargo-2018-use-repro already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing illicitonion/cargo-2018-use-repro against try#e212b7d492c96d3837691ba29d32d5f468933fb8 for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/illicitonion/cargo-2018-use-repro:/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=forbid" "-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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "build" "--frozen"`
[INFO] [stdout] 7bb4b2b03f6608ad195a6917aac2f2249e95d1900291d5c34d026abbea3b2e88
[INFO] running `"docker" "start" "-a" "7bb4b2b03f6608ad195a6917aac2f2249e95d1900291d5c34d026abbea3b2e88"`
[INFO] [stderr]    Compiling rust-use-repro v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `::indexmap`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use ::indexmap;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `indexmap`
[INFO] [stderr]  --> src/main.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let indexmap = String::new();
[INFO] [stderr]   |         ^^^^^^^^ help: consider prefixing with an underscore: `_indexmap`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `"docker" "inspect" "7bb4b2b03f6608ad195a6917aac2f2249e95d1900291d5c34d026abbea3b2e88"`
[INFO] running `"docker" "rm" "-f" "7bb4b2b03f6608ad195a6917aac2f2249e95d1900291d5c34d026abbea3b2e88"`
[INFO] [stdout] 7bb4b2b03f6608ad195a6917aac2f2249e95d1900291d5c34d026abbea3b2e88
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/illicitonion/cargo-2018-use-repro:/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=forbid" "-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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 7fdfc096a041e9835921e5baf33cdd2414152e85c22bf884762379b161af17b1
[INFO] running `"docker" "start" "-a" "7fdfc096a041e9835921e5baf33cdd2414152e85c22bf884762379b161af17b1"`
[INFO] [stderr]    Compiling rust-use-repro v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `::indexmap`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use ::indexmap;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `indexmap`
[INFO] [stderr]  --> src/main.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let indexmap = String::new();
[INFO] [stderr]   |         ^^^^^^^^ help: consider prefixing with an underscore: `_indexmap`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `"docker" "inspect" "7fdfc096a041e9835921e5baf33cdd2414152e85c22bf884762379b161af17b1"`
[INFO] running `"docker" "rm" "-f" "7fdfc096a041e9835921e5baf33cdd2414152e85c22bf884762379b161af17b1"`
[INFO] [stdout] 7fdfc096a041e9835921e5baf33cdd2414152e85c22bf884762379b161af17b1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/illicitonion/cargo-2018-use-repro:/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=forbid" "-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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen"`
[INFO] [stdout] daa9a69f5857852dff9c2942c6019eb88dfd546a408fedf65a763a22265368de
[INFO] running `"docker" "start" "-a" "daa9a69f5857852dff9c2942c6019eb88dfd546a408fedf65a763a22265368de"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_use_repro-caa392bbf29e4830
[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" "daa9a69f5857852dff9c2942c6019eb88dfd546a408fedf65a763a22265368de"`
[INFO] running `"docker" "rm" "-f" "daa9a69f5857852dff9c2942c6019eb88dfd546a408fedf65a763a22265368de"`
[INFO] [stdout] daa9a69f5857852dff9c2942c6019eb88dfd546a408fedf65a763a22265368de