[INFO] updating cached repository Robertof/oxixenon
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Robertof/oxixenon
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Robertof/oxixenon" "work/ex/beta-1.37-6/sources/1.36.0/gh/Robertof/oxixenon"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/Robertof/oxixenon'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Robertof/oxixenon" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Robertof/oxixenon"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Robertof/oxixenon'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d8691e33b2d0b4ee3b71e8577653762434abed67
[INFO] sha for GitHub repo Robertof/oxixenon: d8691e33b2d0b4ee3b71e8577653762434abed67
[INFO] validating manifest of Robertof/oxixenon 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 Robertof/oxixenon 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 Robertof/oxixenon
[INFO] finished frobbing Robertof/oxixenon
[INFO] frobbed toml for Robertof/oxixenon written to work/ex/beta-1.37-6/sources/1.36.0/gh/Robertof/oxixenon/Cargo.toml
[INFO] started frobbing Robertof/oxixenon
[INFO] finished frobbing Robertof/oxixenon
[INFO] frobbed toml for Robertof/oxixenon written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Robertof/oxixenon/Cargo.toml
[INFO] crate Robertof/oxixenon 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 Robertof/oxixenon 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/Robertof/oxixenon:/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] c6d115dd2c645734db1a7dfed885724a658638808c58894d05bacab8587c23f6
[INFO] running `"docker" "start" "-a" "c6d115dd2c645734db1a7dfed885724a658638808c58894d05bacab8587c23f6"`
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling fern v0.5.6
[INFO] [stderr]    Compiling backtrace v0.3.9
[INFO] [stderr]    Compiling chrono v0.4.5
[INFO] [stderr]    Compiling error-chain v0.12.0
[INFO] [stderr]    Compiling oxixenon v1.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:115:13
[INFO] [stderr]     |
[INFO] [stderr] 115 |         let mut stream = stream.chain_err (|| "failed to retrieve I/O stream")?;
[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 23.33s
[INFO] running `"docker" "inspect" "c6d115dd2c645734db1a7dfed885724a658638808c58894d05bacab8587c23f6"`
[INFO] running `"docker" "rm" "-f" "c6d115dd2c645734db1a7dfed885724a658638808c58894d05bacab8587c23f6"`
[INFO] [stdout] c6d115dd2c645734db1a7dfed885724a658638808c58894d05bacab8587c23f6
[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/Robertof/oxixenon:/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] 9c0bc43c6e22c48c54bbfc366ef63de8171bde355879575eaa3f5b3b6333d5c2
[INFO] running `"docker" "start" "-a" "9c0bc43c6e22c48c54bbfc366ef63de8171bde355879575eaa3f5b3b6333d5c2"`
[INFO] [stderr]    Compiling oxixenon v1.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:115:13
[INFO] [stderr]     |
[INFO] [stderr] 115 |         let mut stream = stream.chain_err (|| "failed to retrieve I/O stream")?;
[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 2.38s
[INFO] running `"docker" "inspect" "9c0bc43c6e22c48c54bbfc366ef63de8171bde355879575eaa3f5b3b6333d5c2"`
[INFO] running `"docker" "rm" "-f" "9c0bc43c6e22c48c54bbfc366ef63de8171bde355879575eaa3f5b3b6333d5c2"`
[INFO] [stdout] 9c0bc43c6e22c48c54bbfc366ef63de8171bde355879575eaa3f5b3b6333d5c2
[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/Robertof/oxixenon:/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] d790162c4ec7e51f6092c44dbc829d78cb4874a2cf72f6ba03d883f9611f5088
[INFO] running `"docker" "start" "-a" "d790162c4ec7e51f6092c44dbc829d78cb4874a2cf72f6ba03d883f9611f5088"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/oxixenon-376ab9a86bedb490
[INFO] [stderr]      Running /opt/crater/target/debug/deps/oxixenon-09c98aaec7ad9e7c
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests oxixenon
[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] [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" "d790162c4ec7e51f6092c44dbc829d78cb4874a2cf72f6ba03d883f9611f5088"`
[INFO] running `"docker" "rm" "-f" "d790162c4ec7e51f6092c44dbc829d78cb4874a2cf72f6ba03d883f9611f5088"`
[INFO] [stdout] d790162c4ec7e51f6092c44dbc829d78cb4874a2cf72f6ba03d883f9611f5088