[INFO] crate linux_l6470 0.1.0 is already in cache
[INFO] extracting crate linux_l6470 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/linux_l6470/0.1.0
[INFO] extracting crate linux_l6470 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/linux_l6470/0.1.0
[INFO] validating manifest of linux_l6470-0.1.0 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of linux_l6470-0.1.0 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing linux_l6470-0.1.0
[INFO] finished frobbing linux_l6470-0.1.0
[INFO] frobbed toml for linux_l6470-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/linux_l6470/0.1.0/Cargo.toml
[INFO] started frobbing linux_l6470-0.1.0
[INFO] finished frobbing linux_l6470-0.1.0
[INFO] frobbed toml for linux_l6470-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/linux_l6470/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing linux_l6470-0.1.0 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/linux_l6470/0.1.0:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 133fd423886df2027832f9e4c8dc680d3ff720fbe1c0ee45c35a7cb62b54f6be
[INFO] running `"docker" "start" "-a" "133fd423886df2027832f9e4c8dc680d3ff720fbe1c0ee45c35a7cb62b54f6be"`
[INFO] [stderr]    Compiling linux_l6470 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `tick_ns`
[INFO] [stderr]   --> src/lib.rs:71:13
[INFO] [stderr]    |
[INFO] [stderr] 71 |         let tick_ns = 250;
[INFO] [stderr]    |             ^^^^^^^ help: consider prefixing with an underscore: `_tick_ns`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:178:9
[INFO] [stderr]     |
[INFO] [stderr] 178 |         self.transfer(&buf[0..self.daisy_chain as usize]);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `"docker" "inspect" "133fd423886df2027832f9e4c8dc680d3ff720fbe1c0ee45c35a7cb62b54f6be"`
[INFO] running `"docker" "rm" "-f" "133fd423886df2027832f9e4c8dc680d3ff720fbe1c0ee45c35a7cb62b54f6be"`
[INFO] [stdout] 133fd423886df2027832f9e4c8dc680d3ff720fbe1c0ee45c35a7cb62b54f6be
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/linux_l6470/0.1.0:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 2a428538df351548d3c83a96e3b13a3b7f8a96ce0363d0b28db8ec210a36eb35
[INFO] running `"docker" "start" "-a" "2a428538df351548d3c83a96e3b13a3b7f8a96ce0363d0b28db8ec210a36eb35"`
[INFO] [stderr]    Compiling linux_l6470 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `tick_ns`
[INFO] [stderr]   --> src/lib.rs:71:13
[INFO] [stderr]    |
[INFO] [stderr] 71 |         let tick_ns = 250;
[INFO] [stderr]    |             ^^^^^^^ help: consider prefixing with an underscore: `_tick_ns`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/lib.rs:178:9
[INFO] [stderr]     |
[INFO] [stderr] 178 |         self.transfer(&buf[0..self.daisy_chain as usize]);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `"docker" "inspect" "2a428538df351548d3c83a96e3b13a3b7f8a96ce0363d0b28db8ec210a36eb35"`
[INFO] running `"docker" "rm" "-f" "2a428538df351548d3c83a96e3b13a3b7f8a96ce0363d0b28db8ec210a36eb35"`
[INFO] [stdout] 2a428538df351548d3c83a96e3b13a3b7f8a96ce0363d0b28db8ec210a36eb35
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/linux_l6470/0.1.0:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] e6c65afe426d5938c0e0f56063cfec56531f30dd72420012dd3c9b6ac83f4153
[INFO] running `"docker" "start" "-a" "e6c65afe426d5938c0e0f56063cfec56531f30dd72420012dd3c9b6ac83f4153"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/linux_l6470-803107636cdd0709
[INFO] [stderr]    Doc-tests linux_l6470
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 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" "e6c65afe426d5938c0e0f56063cfec56531f30dd72420012dd3c9b6ac83f4153"`
[INFO] running `"docker" "rm" "-f" "e6c65afe426d5938c0e0f56063cfec56531f30dd72420012dd3c9b6ac83f4153"`
[INFO] [stdout] e6c65afe426d5938c0e0f56063cfec56531f30dd72420012dd3c9b6ac83f4153