[INFO] updating cached repository sbwtw/regex-gen
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sbwtw/regex-gen
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sbwtw/regex-gen" "work/ex/beta-1.37-6/sources/1.36.0/gh/sbwtw/regex-gen"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/sbwtw/regex-gen'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sbwtw/regex-gen" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/sbwtw/regex-gen"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/sbwtw/regex-gen'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a703acd1984705229cb1706a2ebcaaa37ed9bf1e
[INFO] sha for GitHub repo sbwtw/regex-gen: a703acd1984705229cb1706a2ebcaaa37ed9bf1e
[INFO] validating manifest of sbwtw/regex-gen 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 sbwtw/regex-gen 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 sbwtw/regex-gen
[INFO] finished frobbing sbwtw/regex-gen
[INFO] frobbed toml for sbwtw/regex-gen written to work/ex/beta-1.37-6/sources/1.36.0/gh/sbwtw/regex-gen/Cargo.toml
[INFO] started frobbing sbwtw/regex-gen
[INFO] finished frobbing sbwtw/regex-gen
[INFO] frobbed toml for sbwtw/regex-gen written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/sbwtw/regex-gen/Cargo.toml
[INFO] crate sbwtw/regex-gen 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 sbwtw/regex-gen against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/sbwtw/regex-gen:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 4365c2d49a7cb467a4f64d6be6c26ef9aacc28af9158e666b92d71b299848753
[INFO] running `"docker" "start" "-a" "4365c2d49a7cb467a4f64d6be6c26ef9aacc28af9158e666b92d71b299848753"`
[INFO] [stderr]    Compiling regex-gen v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/transtable.rs:122:17
[INFO] [stderr]     |
[INFO] [stderr] 122 |         for (_, mut edges) in self.trans.iter_mut() {
[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 3.51s
[INFO] running `"docker" "inspect" "4365c2d49a7cb467a4f64d6be6c26ef9aacc28af9158e666b92d71b299848753"`
[INFO] running `"docker" "rm" "-f" "4365c2d49a7cb467a4f64d6be6c26ef9aacc28af9158e666b92d71b299848753"`
[INFO] [stdout] 4365c2d49a7cb467a4f64d6be6c26ef9aacc28af9158e666b92d71b299848753
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/sbwtw/regex-gen:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] ff240a98c00cc1d6960a7ca499da2414434db752a335c48c9616881c6fc45bdc
[INFO] running `"docker" "start" "-a" "ff240a98c00cc1d6960a7ca499da2414434db752a335c48c9616881c6fc45bdc"`
[INFO] [stderr]    Compiling regex-gen v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/transtable.rs:122:17
[INFO] [stderr]     |
[INFO] [stderr] 122 |         for (_, mut edges) in self.trans.iter_mut() {
[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 4.19s
[INFO] running `"docker" "inspect" "ff240a98c00cc1d6960a7ca499da2414434db752a335c48c9616881c6fc45bdc"`
[INFO] running `"docker" "rm" "-f" "ff240a98c00cc1d6960a7ca499da2414434db752a335c48c9616881c6fc45bdc"`
[INFO] [stdout] ff240a98c00cc1d6960a7ca499da2414434db752a335c48c9616881c6fc45bdc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/sbwtw/regex-gen:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] b4b10a9a4a8b548a75f94aee15640d28f3b05c8c9a7d236c10bd64ef65ed30e6
[INFO] running `"docker" "start" "-a" "b4b10a9a4a8b548a75f94aee15640d28f3b05c8c9a7d236c10bd64ef65ed30e6"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/regex_gen-2f513be4d6d93875
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test execute_engine::test::test_execute_not ... ok
[INFO] [stdout] test node::test::test_edge_match_character ... ok
[INFO] [stdout] test node::test::test_edge_intersect ... ok
[INFO] [stdout] test execute_engine::test::test_execute_engine ... ok
[INFO] [stdout] test dot_graph::test::test_dot_graph ... ok
[INFO] [stdout] test regex_gen::test::test_print_graph ... ok
[INFO] [stdout] test regex_gen::test::test_parse ... ok
[INFO] [stdout] test transtable::test::test_epsilon_move ... ok
[INFO] [stdout] test transtable::test::test_cut_epsilon ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests regex_gen
[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" "b4b10a9a4a8b548a75f94aee15640d28f3b05c8c9a7d236c10bd64ef65ed30e6"`
[INFO] running `"docker" "rm" "-f" "b4b10a9a4a8b548a75f94aee15640d28f3b05c8c9a7d236c10bd64ef65ed30e6"`
[INFO] [stdout] b4b10a9a4a8b548a75f94aee15640d28f3b05c8c9a7d236c10bd64ef65ed30e6