[INFO] updating cached repository utam0k/r8cc
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/utam0k/r8cc
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/utam0k/r8cc" "work/ex/beta-1.37-6/sources/1.36.0/gh/utam0k/r8cc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/utam0k/r8cc'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/utam0k/r8cc" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/utam0k/r8cc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/utam0k/r8cc'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 60d03075da9d0a8f73d50f99b70cd2de706f7ca6
[INFO] sha for GitHub repo utam0k/r8cc: 60d03075da9d0a8f73d50f99b70cd2de706f7ca6
[INFO] validating manifest of utam0k/r8cc 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 utam0k/r8cc 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 utam0k/r8cc
[INFO] finished frobbing utam0k/r8cc
[INFO] frobbed toml for utam0k/r8cc written to work/ex/beta-1.37-6/sources/1.36.0/gh/utam0k/r8cc/Cargo.toml
[INFO] started frobbing utam0k/r8cc
[INFO] finished frobbing utam0k/r8cc
[INFO] frobbed toml for utam0k/r8cc written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/utam0k/r8cc/Cargo.toml
[INFO] crate utam0k/r8cc 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 utam0k/r8cc 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-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/utam0k/r8cc:/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] 3038b44248b33d4736cc19bcc97a0618f28da638f2ac0b370447402f58a88488
[INFO] running `"docker" "start" "-a" "3038b44248b33d4736cc19bcc97a0618f28da638f2ac0b370447402f58a88488"`
[INFO] [stderr]    Compiling r8cc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:260:21
[INFO] [stderr]     |
[INFO] [stderr] 260 |                 let mut reg;
[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 1.77s
[INFO] running `"docker" "inspect" "3038b44248b33d4736cc19bcc97a0618f28da638f2ac0b370447402f58a88488"`
[INFO] running `"docker" "rm" "-f" "3038b44248b33d4736cc19bcc97a0618f28da638f2ac0b370447402f58a88488"`
[INFO] [stdout] 3038b44248b33d4736cc19bcc97a0618f28da638f2ac0b370447402f58a88488
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/utam0k/r8cc:/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] 342fc215ab54b3a628d6e8428f869b7d1b693fb4ccf6c215f9ffb4117d8ad9fc
[INFO] running `"docker" "start" "-a" "342fc215ab54b3a628d6e8428f869b7d1b693fb4ccf6c215f9ffb4117d8ad9fc"`
[INFO] [stderr]    Compiling r8cc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:260:21
[INFO] [stderr]     |
[INFO] [stderr] 260 |                 let mut reg;
[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 0.86s
[INFO] running `"docker" "inspect" "342fc215ab54b3a628d6e8428f869b7d1b693fb4ccf6c215f9ffb4117d8ad9fc"`
[INFO] running `"docker" "rm" "-f" "342fc215ab54b3a628d6e8428f869b7d1b693fb4ccf6c215f9ffb4117d8ad9fc"`
[INFO] [stdout] 342fc215ab54b3a628d6e8428f869b7d1b693fb4ccf6c215f9ffb4117d8ad9fc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/utam0k/r8cc:/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] 02746c0e525827c9c656a658034306ab16224270552162087b635c66ffecc324
[INFO] running `"docker" "start" "-a" "02746c0e525827c9c656a658034306ab16224270552162087b635c66ffecc324"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/r8cc-09579127908e7833
[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]      Running /opt/crater/target/debug/deps/r8cc-4b2629191e40bf16
[INFO] [stderr]    Doc-tests r8cc
[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" "02746c0e525827c9c656a658034306ab16224270552162087b635c66ffecc324"`
[INFO] running `"docker" "rm" "-f" "02746c0e525827c9c656a658034306ab16224270552162087b635c66ffecc324"`
[INFO] [stdout] 02746c0e525827c9c656a658034306ab16224270552162087b635c66ffecc324