[INFO] updating cached repository https://github.com/fzzzy/rust-grep
[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] e9a4693739beccd8c865f57fe58ad146267fb76c
[INFO] testing fzzzy/rust-grep against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffzzzy%2Frust-grep" "work/builds/worker-7/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fzzzy/rust-grep on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/fzzzy/rust-grep
[INFO] finished tweaking git repo https://github.com/fzzzy/rust-grep
[INFO] tweaked toml for git repo https://github.com/fzzzy/rust-grep written to work/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/fzzzy/rust-grep already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] c5309289324b8abba53af38948024d5bfae99fb47227b79bd06c0aa6e85f2c96
[INFO] running `"docker" "start" "-a" "c5309289324b8abba53af38948024d5bfae99fb47227b79bd06c0aa6e85f2c96"`
[INFO] [stderr]    Compiling rust-grep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:23:34
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn grep_main() -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `"docker" "inspect" "c5309289324b8abba53af38948024d5bfae99fb47227b79bd06c0aa6e85f2c96"`
[INFO] running `"docker" "rm" "-f" "c5309289324b8abba53af38948024d5bfae99fb47227b79bd06c0aa6e85f2c96"`
[INFO] [stdout] c5309289324b8abba53af38948024d5bfae99fb47227b79bd06c0aa6e85f2c96
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/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" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 1ad639c775882ea00c23daac777672de1ead03c14907a3acc07f60c6c5fab5e2
[INFO] running `"docker" "start" "-a" "1ad639c775882ea00c23daac777672de1ead03c14907a3acc07f60c6c5fab5e2"`
[INFO] [stderr]    Compiling rust-grep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:23:34
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn grep_main() -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.54s
[INFO] running `"docker" "inspect" "1ad639c775882ea00c23daac777672de1ead03c14907a3acc07f60c6c5fab5e2"`
[INFO] running `"docker" "rm" "-f" "1ad639c775882ea00c23daac777672de1ead03c14907a3acc07f60c6c5fab5e2"`
[INFO] [stdout] 1ad639c775882ea00c23daac777672de1ead03c14907a3acc07f60c6c5fab5e2
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/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" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] 1c4187c0380ee26fee50361b002bf0a3378bdb4ba6ea5a8d46c45b9e9ae88b42
[INFO] running `"docker" "start" "-a" "1c4187c0380ee26fee50361b002bf0a3378bdb4ba6ea5a8d46c45b9e9ae88b42"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_grep-5478dcb1971002ab
[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" "1c4187c0380ee26fee50361b002bf0a3378bdb4ba6ea5a8d46c45b9e9ae88b42"`
[INFO] running `"docker" "rm" "-f" "1c4187c0380ee26fee50361b002bf0a3378bdb4ba6ea5a8d46c45b9e9ae88b42"`
[INFO] [stdout] 1c4187c0380ee26fee50361b002bf0a3378bdb4ba6ea5a8d46c45b9e9ae88b42