[INFO] updating cached repository mlen/ddcpoll
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mlen/ddcpoll
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mlen/ddcpoll" "work/ex/beta-1.37-6/sources/1.36.0/gh/mlen/ddcpoll"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/mlen/ddcpoll'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mlen/ddcpoll" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/mlen/ddcpoll"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/mlen/ddcpoll'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 683041f79b2ff6836ef226d2c5317575f2eb5620
[INFO] sha for GitHub repo mlen/ddcpoll: 683041f79b2ff6836ef226d2c5317575f2eb5620
[INFO] validating manifest of mlen/ddcpoll 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 mlen/ddcpoll 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 mlen/ddcpoll
[INFO] finished frobbing mlen/ddcpoll
[INFO] frobbed toml for mlen/ddcpoll written to work/ex/beta-1.37-6/sources/1.36.0/gh/mlen/ddcpoll/Cargo.toml
[INFO] started frobbing mlen/ddcpoll
[INFO] finished frobbing mlen/ddcpoll
[INFO] frobbed toml for mlen/ddcpoll written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/mlen/ddcpoll/Cargo.toml
[INFO] crate mlen/ddcpoll 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 mlen/ddcpoll 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/mlen/ddcpoll:/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] b136a1f8b66be6d506b02b991c26ae5c7d8854ad1cc443cdc24a0a2a950d748d
[INFO] running `"docker" "start" "-a" "b136a1f8b66be6d506b02b991c26ae5c7d8854ad1cc443cdc24a0a2a950d748d"`
[INFO] [stderr]    Compiling uninitialized v0.0.2
[INFO] [stderr]    Compiling serde v1.0.76
[INFO] [stderr]    Compiling ddc-hi v0.1.3
[INFO] [stderr]    Compiling mccs v0.1.0
[INFO] [stderr]    Compiling i2c v0.1.0
[INFO] [stderr]    Compiling i2c-linux-sys v0.2.0
[INFO] [stderr]    Compiling edid v0.2.0
[INFO] [stderr]    Compiling udev v0.2.0
[INFO] [stderr]    Compiling backtrace v0.3.8
[INFO] [stderr]    Compiling serde_derive v1.0.76
[INFO] [stderr]    Compiling resize-slice v0.1.3
[INFO] [stderr]    Compiling ddc v0.2.1
[INFO] [stderr]    Compiling mccs-caps v0.1.0
[INFO] [stderr]    Compiling i2c-linux v0.1.1
[INFO] [stderr]    Compiling failure v0.1.1
[INFO] [stderr]    Compiling ddc-i2c v0.2.1
[INFO] [stderr]    Compiling serde_yaml v0.7.5
[INFO] [stderr]    Compiling toml v0.4.6
[INFO] [stderr]    Compiling mccs-db v0.1.2
[INFO] [stderr]    Compiling ddcpoll v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:78:13
[INFO] [stderr]    |
[INFO] [stderr] 78 |         for mut display in &mut self.displays {
[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 42.67s
[INFO] running `"docker" "inspect" "b136a1f8b66be6d506b02b991c26ae5c7d8854ad1cc443cdc24a0a2a950d748d"`
[INFO] running `"docker" "rm" "-f" "b136a1f8b66be6d506b02b991c26ae5c7d8854ad1cc443cdc24a0a2a950d748d"`
[INFO] [stdout] b136a1f8b66be6d506b02b991c26ae5c7d8854ad1cc443cdc24a0a2a950d748d
[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/mlen/ddcpoll:/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] f3c8fdb94fe0e79dd48ed2de810a4e60fa61e0711f34798477066460db0e21da
[INFO] running `"docker" "start" "-a" "f3c8fdb94fe0e79dd48ed2de810a4e60fa61e0711f34798477066460db0e21da"`
[INFO] [stderr]    Compiling ddcpoll v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:78:13
[INFO] [stderr]    |
[INFO] [stderr] 78 |         for mut display in &mut self.displays {
[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 1.16s
[INFO] running `"docker" "inspect" "f3c8fdb94fe0e79dd48ed2de810a4e60fa61e0711f34798477066460db0e21da"`
[INFO] running `"docker" "rm" "-f" "f3c8fdb94fe0e79dd48ed2de810a4e60fa61e0711f34798477066460db0e21da"`
[INFO] [stdout] f3c8fdb94fe0e79dd48ed2de810a4e60fa61e0711f34798477066460db0e21da
[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/mlen/ddcpoll:/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] a9f99880d89c171b4cfbec52887604fdc0cbe9230518a0b29da8c8581e8cd11d
[INFO] running `"docker" "start" "-a" "a9f99880d89c171b4cfbec52887604fdc0cbe9230518a0b29da8c8581e8cd11d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ddcpoll-134e5ee0d6187520
[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" "a9f99880d89c171b4cfbec52887604fdc0cbe9230518a0b29da8c8581e8cd11d"`
[INFO] running `"docker" "rm" "-f" "a9f99880d89c171b4cfbec52887604fdc0cbe9230518a0b29da8c8581e8cd11d"`
[INFO] [stdout] a9f99880d89c171b4cfbec52887604fdc0cbe9230518a0b29da8c8581e8cd11d