[INFO] updating cached repository Franciman/pid
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Franciman/pid
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Franciman/pid" "work/ex/beta-1.38-1/sources/1.37.0/gh/Franciman/pid"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Franciman/pid'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Franciman/pid" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Franciman/pid"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Franciman/pid'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b2d4d190030bb393f4593fafd2f503fd69e6aa04
[INFO] sha for GitHub repo Franciman/pid: b2d4d190030bb393f4593fafd2f503fd69e6aa04
[INFO] validating manifest of Franciman/pid 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 Franciman/pid 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 Franciman/pid
[INFO] finished frobbing Franciman/pid
[INFO] frobbed toml for Franciman/pid written to work/ex/beta-1.38-1/sources/1.37.0/gh/Franciman/pid/Cargo.toml
[INFO] started frobbing Franciman/pid
[INFO] finished frobbing Franciman/pid
[INFO] frobbed toml for Franciman/pid written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Franciman/pid/Cargo.toml
[INFO] crate Franciman/pid 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] testing Franciman/pid against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Franciman/pid:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 7eba3d86451770eea0780fb53bee6373dde7b8bf354cd3516e09a8c4eafab0ef
[INFO] running `"docker" "start" "-a" "7eba3d86451770eea0780fb53bee6373dde7b8bf354cd3516e09a8c4eafab0ef"`
[INFO] [stderr]    Compiling libc v0.2.31
[INFO] [stderr]    Compiling regex-syntax v0.4.1
[INFO] [stderr]    Compiling thread_local v0.3.4
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling pid v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0596]: cannot borrow `stream` as mutable, as it is not declared as mutable
[INFO] [stderr]   --> src/main.rs:18:26
[INFO] [stderr]    |
[INFO] [stderr] 16 | fn initialization_sequence(stream: &mut TcpStream) {
[INFO] [stderr]    |                            ------ help: consider changing this to be mutable: `mut stream`
[INFO] [stderr] 17 | 
[INFO] [stderr] 18 |     ident_authentication(&mut stream);
[INFO] [stderr]    |                          ^^^^^^^^^^^ cannot borrow as mutable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0596`.
[INFO] [stderr] error: Could not compile `pid`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "7eba3d86451770eea0780fb53bee6373dde7b8bf354cd3516e09a8c4eafab0ef"`
[INFO] running `"docker" "rm" "-f" "7eba3d86451770eea0780fb53bee6373dde7b8bf354cd3516e09a8c4eafab0ef"`
[INFO] [stdout] 7eba3d86451770eea0780fb53bee6373dde7b8bf354cd3516e09a8c4eafab0ef