[INFO] updating cached repository https://github.com/CoreRC/rcgenmsg
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 30a891acc54f6c2c9edafc6d3219c7b3f5e0dd07
[INFO] testing CoreRC/rcgenmsg against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FCoreRC%2Frcgenmsg" "work/builds/worker-5/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CoreRC/rcgenmsg on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/CoreRC/rcgenmsg
[INFO] finished tweaking git repo https://github.com/CoreRC/rcgenmsg
[INFO] tweaked toml for git repo https://github.com/CoreRC/rcgenmsg written to work/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/CoreRC/rcgenmsg already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] fcbb0572ca17cbe2b7cfed6b747c842af6cf1767dee60502795de38559feb241
[INFO] running `"docker" "start" "-a" "fcbb0572ca17cbe2b7cfed6b747c842af6cf1767dee60502795de38559feb241"`
[INFO] [stderr]    Compiling log v0.4.3
[INFO] [stderr]    Compiling pest_derive v1.0.7
[INFO] [stderr]    Compiling Inflector v0.11.3
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling handlebars v1.0.0-beta.2
[INFO] [stderr]    Compiling rcgenmsg v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:259:13
[INFO] [stderr]     |
[INFO] [stderr] 259 |         for mut f in json_data["fields"].as_array_mut().unwrap() {
[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:282:13
[INFO] [stderr]     |
[INFO] [stderr] 282 |         for mut f in json_data["consts"].as_array_mut().unwrap() {
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.01s
[INFO] running `"docker" "inspect" "fcbb0572ca17cbe2b7cfed6b747c842af6cf1767dee60502795de38559feb241"`
[INFO] running `"docker" "rm" "-f" "fcbb0572ca17cbe2b7cfed6b747c842af6cf1767dee60502795de38559feb241"`
[INFO] [stdout] fcbb0572ca17cbe2b7cfed6b747c842af6cf1767dee60502795de38559feb241
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] 6198eb630d2db3d83feaa6ac52bf74289cf7bfec7b781496e9dae37ed531d09d
[INFO] running `"docker" "start" "-a" "6198eb630d2db3d83feaa6ac52bf74289cf7bfec7b781496e9dae37ed531d09d"`
[INFO] [stderr]    Compiling rcgenmsg v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:259:13
[INFO] [stderr]     |
[INFO] [stderr] 259 |         for mut f in json_data["fields"].as_array_mut().unwrap() {
[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:282:13
[INFO] [stderr]     |
[INFO] [stderr] 282 |         for mut f in json_data["consts"].as_array_mut().unwrap() {
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.36s
[INFO] running `"docker" "inspect" "6198eb630d2db3d83feaa6ac52bf74289cf7bfec7b781496e9dae37ed531d09d"`
[INFO] running `"docker" "rm" "-f" "6198eb630d2db3d83feaa6ac52bf74289cf7bfec7b781496e9dae37ed531d09d"`
[INFO] [stdout] 6198eb630d2db3d83feaa6ac52bf74289cf7bfec7b781496e9dae37ed531d09d
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] 59a9d94c8ee5ca718605821d58fd4e715caa75c9aa2318115b0e51b19783d343
[INFO] running `"docker" "start" "-a" "59a9d94c8ee5ca718605821d58fd4e715caa75c9aa2318115b0e51b19783d343"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.16s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rcgenmsg-34c2461f17a850ec
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "59a9d94c8ee5ca718605821d58fd4e715caa75c9aa2318115b0e51b19783d343"`
[INFO] running `"docker" "rm" "-f" "59a9d94c8ee5ca718605821d58fd4e715caa75c9aa2318115b0e51b19783d343"`
[INFO] [stdout] 59a9d94c8ee5ca718605821d58fd4e715caa75c9aa2318115b0e51b19783d343