[INFO] cloning repository regexident/cargo-modules
[INFO] running `"git" "clone" "--bare" "git://github.com/regexident/cargo-modules.git" "work/cache/sources/gh/regexident/cargo-modules"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/regexident/cargo-modules'...
[INFO] running `"git" "clone" "work/cache/sources/gh/regexident/cargo-modules" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/regexident/cargo-modules"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/regexident/cargo-modules'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/regexident/cargo-modules" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/regexident/cargo-modules"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/regexident/cargo-modules'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5cf3f1eab1d2d4a0c70e72da96269d483d5a2d9d
[INFO] sha for GitHub repo regexident/cargo-modules: 5cf3f1eab1d2d4a0c70e72da96269d483d5a2d9d
[INFO] validating manifest of regexident/cargo-modules 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 regexident/cargo-modules 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 regexident/cargo-modules
[INFO] finished frobbing regexident/cargo-modules
[INFO] frobbed toml for regexident/cargo-modules written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/regexident/cargo-modules/Cargo.toml
[INFO] started frobbing regexident/cargo-modules
[INFO] finished frobbing regexident/cargo-modules
[INFO] frobbed toml for regexident/cargo-modules written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/regexident/cargo-modules/Cargo.toml
[INFO] crate regexident/cargo-modules 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]  Downloading crates ...
[INFO] [stderr]   Downloaded rustc-ap-syntax_pos v373.0.0
[INFO] [stderr]   Downloaded rustc-ap-syntax v373.0.0
[INFO] [stderr]   Downloaded rustc-rayon v0.1.1
[INFO] [stderr]   Downloaded rustc-ap-rustc_target v373.0.0
[INFO] [stderr]   Downloaded rustc-ap-serialize v373.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_errors v373.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_data_structures v373.0.0
[INFO] [stderr]   Downloaded rustc-rayon-core v0.1.1
[INFO] [stderr]   Downloaded rustc-ap-rustc_cratesio_shim v373.0.0
[INFO] [stderr]   Downloaded rustc-ap-graphviz v373.0.0
[INFO] [stderr]   Downloaded rustc-ap-arena v373.0.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing regexident/cargo-modules against master#c8865d8e195813ade6b84434ac9f8850e7112d1a for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-4/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/regexident/cargo-modules:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "build" "--frozen"`
[INFO] [stdout] 03c92524bfd49a7d1edac33365c905e45e93a28b708ad50d530aa111c19c2d1f
[INFO] running `"docker" "start" "-a" "03c92524bfd49a7d1edac33365c905e45e93a28b708ad50d530aa111c19c2d1f"`
[INFO] [stderr]    Compiling rustc-rayon-core v0.1.1
[INFO] [stderr]    Compiling rustc-ap-graphviz v373.0.0
[INFO] [stderr]    Compiling rustc-ap-rustc_target v373.0.0
[INFO] [stderr]    Compiling scoped-tls v0.1.2
[INFO] [stderr]    Compiling rustc-ap-syntax v373.0.0
[INFO] [stderr]    Compiling smallvec v0.6.7
[INFO] [stderr]    Compiling rustc-ap-rustc_cratesio_shim v373.0.0
[INFO] [stderr]    Compiling ena v0.11.0
[INFO] [stderr]    Compiling lock_api v0.1.5
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling structopt-derive v0.2.14
[INFO] [stderr]    Compiling rustc-ap-serialize v373.0.0
[INFO] [stderr]    Compiling rustc-rayon v0.1.1
[INFO] [stderr]    Compiling parking_lot v0.6.4
[INFO] [stderr]    Compiling structopt v0.2.14
[INFO] [stderr]    Compiling rustc-ap-rustc_data_structures v373.0.0
[INFO] [stderr]    Compiling rustc-ap-arena v373.0.0
[INFO] [stderr]    Compiling rustc-ap-syntax_pos v373.0.0
[INFO] [stderr]    Compiling rustc-ap-rustc_errors v373.0.0
[INFO] [stderr]    Compiling cargo-modules v0.4.4 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/builder.rs:183:17
[INFO] [stderr]     |
[INFO] [stderr] 183 |             let mut prefix = if use_tree.prefix.segments.is_empty() {
[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 1m 05s
[INFO] running `"docker" "inspect" "03c92524bfd49a7d1edac33365c905e45e93a28b708ad50d530aa111c19c2d1f"`
[INFO] running `"docker" "rm" "-f" "03c92524bfd49a7d1edac33365c905e45e93a28b708ad50d530aa111c19c2d1f"`
[INFO] [stdout] 03c92524bfd49a7d1edac33365c905e45e93a28b708ad50d530aa111c19c2d1f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-4/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/regexident/cargo-modules:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 798f710c506c61b900fb80d88c319e6ed1d145094debd4f63290a853a0701288
[INFO] running `"docker" "start" "-a" "798f710c506c61b900fb80d88c319e6ed1d145094debd4f63290a853a0701288"`
[INFO] [stderr]    Compiling cargo-modules v0.4.4 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/builder.rs:183:17
[INFO] [stderr]     |
[INFO] [stderr] 183 |             let mut prefix = if use_tree.prefix.segments.is_empty() {
[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 4.17s
[INFO] running `"docker" "inspect" "798f710c506c61b900fb80d88c319e6ed1d145094debd4f63290a853a0701288"`
[INFO] running `"docker" "rm" "-f" "798f710c506c61b900fb80d88c319e6ed1d145094debd4f63290a853a0701288"`
[INFO] [stdout] 798f710c506c61b900fb80d88c319e6ed1d145094debd4f63290a853a0701288
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-4/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/regexident/cargo-modules:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen"`
[INFO] [stdout] b214cd3e08e032aa66ee5a76f640da27ce903ed08391efd12f6c9955ffa242f7
[INFO] running `"docker" "start" "-a" "b214cd3e08e032aa66ee5a76f640da27ce903ed08391efd12f6c9955ffa242f7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/cargo_modules-ef5d4a612c91f8d0
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test manifest::tests::manifest_for_simple_lib ... ok
[INFO] [stdout] test manifest::tests::manifest_with_custom_build ... ok
[INFO] [stdout] test manifest::tests::manifest_with_edition2015_can_be_parsed ... ok
[INFO] [stdout] test manifest::tests::manifest_for_simple_bin ... ok
[INFO] [stdout] test manifest::tests::manifest_without_edition_can_be_parsed ... ok
[INFO] [stdout] test manifest::tests::manifest_with_edition2018_can_be_parsed ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "b214cd3e08e032aa66ee5a76f640da27ce903ed08391efd12f6c9955ffa242f7"`
[INFO] running `"docker" "rm" "-f" "b214cd3e08e032aa66ee5a76f640da27ce903ed08391efd12f6c9955ffa242f7"`
[INFO] [stdout] b214cd3e08e032aa66ee5a76f640da27ce903ed08391efd12f6c9955ffa242f7