[INFO] updating cached repository gsas7q7o/rust-xp
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/gsas7q7o/rust-xp
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/gsas7q7o/rust-xp" "work/ex/beta-1.37-6/sources/1.36.0/gh/gsas7q7o/rust-xp"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/gsas7q7o/rust-xp'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/gsas7q7o/rust-xp" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/gsas7q7o/rust-xp"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/gsas7q7o/rust-xp'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 30c9aaf9335a9bd3a6cf5f1ed910e776b366639f
[INFO] sha for GitHub repo gsas7q7o/rust-xp: 30c9aaf9335a9bd3a6cf5f1ed910e776b366639f
[INFO] validating manifest of gsas7q7o/rust-xp 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 gsas7q7o/rust-xp 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 gsas7q7o/rust-xp
[INFO] finished frobbing gsas7q7o/rust-xp
[INFO] frobbed toml for gsas7q7o/rust-xp written to work/ex/beta-1.37-6/sources/1.36.0/gh/gsas7q7o/rust-xp/Cargo.toml
[INFO] started frobbing gsas7q7o/rust-xp
[INFO] finished frobbing gsas7q7o/rust-xp
[INFO] frobbed toml for gsas7q7o/rust-xp written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/gsas7q7o/rust-xp/Cargo.toml
[INFO] crate gsas7q7o/rust-xp 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 gsas7q7o/rust-xp against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/gsas7q7o/rust-xp:/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] b60ebf9ad689e14e38bf54528badf5c33294771dba688cd0cdea15847b5ee728
[INFO] running `"docker" "start" "-a" "b60ebf9ad689e14e38bf54528badf5c33294771dba688cd0cdea15847b5ee728"`
[INFO] [stderr]    Compiling xp v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/xp.rs:167:25
[INFO] [stderr]     |
[INFO] [stderr] 167 |                     let mut km = k + m;
[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 1.38s
[INFO] running `"docker" "inspect" "b60ebf9ad689e14e38bf54528badf5c33294771dba688cd0cdea15847b5ee728"`
[INFO] running `"docker" "rm" "-f" "b60ebf9ad689e14e38bf54528badf5c33294771dba688cd0cdea15847b5ee728"`
[INFO] [stdout] b60ebf9ad689e14e38bf54528badf5c33294771dba688cd0cdea15847b5ee728
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/gsas7q7o/rust-xp:/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] d09a7c53b3482cd5327eddfbb23a156ac69c044b4af1380dad7a359214f8007a
[INFO] running `"docker" "start" "-a" "d09a7c53b3482cd5327eddfbb23a156ac69c044b4af1380dad7a359214f8007a"`
[INFO] [stderr]    Compiling xp v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/xp.rs:167:25
[INFO] [stderr]     |
[INFO] [stderr] 167 |                     let mut km = k + m;
[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 0.91s
[INFO] running `"docker" "inspect" "d09a7c53b3482cd5327eddfbb23a156ac69c044b4af1380dad7a359214f8007a"`
[INFO] running `"docker" "rm" "-f" "d09a7c53b3482cd5327eddfbb23a156ac69c044b4af1380dad7a359214f8007a"`
[INFO] [stdout] d09a7c53b3482cd5327eddfbb23a156ac69c044b4af1380dad7a359214f8007a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/gsas7q7o/rust-xp:/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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 4df3c4e4794038a0b68b71d0051c8a4a0a293cf94d24d607cf851f3bcf6cba78
[INFO] running `"docker" "start" "-a" "4df3c4e4794038a0b68b71d0051c8a4a0a293cf94d24d607cf851f3bcf6cba78"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/xp-6dc8e42c5160ea50
[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/xp-b54d09568598c8b6
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests xp
[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" "4df3c4e4794038a0b68b71d0051c8a4a0a293cf94d24d607cf851f3bcf6cba78"`
[INFO] running `"docker" "rm" "-f" "4df3c4e4794038a0b68b71d0051c8a4a0a293cf94d24d607cf851f3bcf6cba78"`
[INFO] [stdout] 4df3c4e4794038a0b68b71d0051c8a4a0a293cf94d24d607cf851f3bcf6cba78