[INFO] updating cached repository zacky1972/pipe_example
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/zacky1972/pipe_example
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/zacky1972/pipe_example" "work/ex/beta-1.38-1/sources/1.37.0/gh/zacky1972/pipe_example"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/zacky1972/pipe_example'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/zacky1972/pipe_example" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/zacky1972/pipe_example"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/zacky1972/pipe_example'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8ff5a0ed11a4f2b097e50547778a52c4ed2fefc3
[INFO] sha for GitHub repo zacky1972/pipe_example: 8ff5a0ed11a4f2b097e50547778a52c4ed2fefc3
[INFO] validating manifest of zacky1972/pipe_example 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 zacky1972/pipe_example 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 zacky1972/pipe_example
[INFO] finished frobbing zacky1972/pipe_example
[INFO] frobbed toml for zacky1972/pipe_example written to work/ex/beta-1.38-1/sources/1.37.0/gh/zacky1972/pipe_example/Cargo.toml
[INFO] started frobbing zacky1972/pipe_example
[INFO] finished frobbing zacky1972/pipe_example
[INFO] frobbed toml for zacky1972/pipe_example written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/zacky1972/pipe_example/Cargo.toml
[INFO] crate zacky1972/pipe_example already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing zacky1972/pipe_example 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/gh/zacky1972/pipe_example:/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] ff58c400275770ae742d4eed88b70cbcaf9f8149c9798ab6c6d809f8c0db57e2
[INFO] running `"docker" "start" "-a" "ff58c400275770ae742d4eed88b70cbcaf9f8149c9798ab6c6d809f8c0db57e2"`
[INFO] [stderr]    Compiling libc v0.2.41
[INFO] [stderr]    Compiling pipe_example v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 let mut buf = data.as_mut_ptr() as *mut c_void;
[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] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |                 let mut dst_buf = dst_data.as_mut_ptr() as *mut c_void;
[INFO] [stderr]    |                     ----^^^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.97s
[INFO] running `"docker" "inspect" "ff58c400275770ae742d4eed88b70cbcaf9f8149c9798ab6c6d809f8c0db57e2"`
[INFO] running `"docker" "rm" "-f" "ff58c400275770ae742d4eed88b70cbcaf9f8149c9798ab6c6d809f8c0db57e2"`
[INFO] [stdout] ff58c400275770ae742d4eed88b70cbcaf9f8149c9798ab6c6d809f8c0db57e2
[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/gh/zacky1972/pipe_example:/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] b9cb682977b4877aa65ed5062bd2cf8cd5181b722f965f470148993187c3830c
[INFO] running `"docker" "start" "-a" "b9cb682977b4877aa65ed5062bd2cf8cd5181b722f965f470148993187c3830c"`
[INFO] [stderr]    Compiling pipe_example v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 let mut buf = data.as_mut_ptr() as *mut c_void;
[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] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |                 let mut dst_buf = dst_data.as_mut_ptr() as *mut c_void;
[INFO] [stderr]    |                     ----^^^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `"docker" "inspect" "b9cb682977b4877aa65ed5062bd2cf8cd5181b722f965f470148993187c3830c"`
[INFO] running `"docker" "rm" "-f" "b9cb682977b4877aa65ed5062bd2cf8cd5181b722f965f470148993187c3830c"`
[INFO] [stdout] b9cb682977b4877aa65ed5062bd2cf8cd5181b722f965f470148993187c3830c
[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/gh/zacky1972/pipe_example:/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] bdc7e82327404f648fcd83ab8d5482434aae73df26ab7f0ff58f5c4233495898
[INFO] running `"docker" "start" "-a" "bdc7e82327404f648fcd83ab8d5482434aae73df26ab7f0ff58f5c4233495898"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/pipe_example-3fa95a2437889b07
[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" "bdc7e82327404f648fcd83ab8d5482434aae73df26ab7f0ff58f5c4233495898"`
[INFO] running `"docker" "rm" "-f" "bdc7e82327404f648fcd83ab8d5482434aae73df26ab7f0ff58f5c4233495898"`
[INFO] [stdout] bdc7e82327404f648fcd83ab8d5482434aae73df26ab7f0ff58f5c4233495898