[INFO] cloning repository https://github.com/tsaraps/mini_grep
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tsaraps/mini_grep" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftsaraps%2Fmini_grep", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftsaraps%2Fmini_grep'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 70fbb4d89b25970b5b4e1984874a6504d29b3c0d
[INFO] testing tsaraps/mini_grep against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftsaraps%2Fmini_grep" "/workspace/builds/worker-16/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-16/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tsaraps/mini_grep on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tsaraps/mini_grep
[INFO] finished tweaking git repo https://github.com/tsaraps/mini_grep
[INFO] tweaked toml for git repo https://github.com/tsaraps/mini_grep written to /workspace/builds/worker-16/source/Cargo.toml
[INFO] crate git repo https://github.com/tsaraps/mini_grep already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d223ea688f1c3c00c15d043af662779d0e9a67aad59c1f4031b2b4928afa220
[INFO] running `Command { std: "docker" "start" "-a" "6d223ea688f1c3c00c15d043af662779d0e9a67aad59c1f4031b2b4928afa220", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d223ea688f1c3c00c15d043af662779d0e9a67aad59c1f4031b2b4928afa220", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d223ea688f1c3c00c15d043af662779d0e9a67aad59c1f4031b2b4928afa220", kill_on_drop: false }`
[INFO] [stdout] 6d223ea688f1c3c00c15d043af662779d0e9a67aad59c1f4031b2b4928afa220
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7289dc6bd045fc28df4be2a7c78a8c02bf29493c3160145f6f6502f6657effcb
[INFO] running `Command { std: "docker" "start" "-a" "7289dc6bd045fc28df4be2a7c78a8c02bf29493c3160145f6f6502f6657effcb", kill_on_drop: false }`
[INFO] [stderr]    Compiling mini_grep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0425]: cannot find value `arg` in this scope
[INFO] [stdout]   --> src/lib.rs:20:30
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let filename = match arg.next() {
[INFO] [stdout]    |                              ^^^ help: a local variable with a similar name exists: `args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: expected a `FnMut<(char,)>` closure, found `String`
[INFO] [stdout]     --> src/lib.rs:60:53
[INFO] [stdout]      |
[INFO] [stdout] 60   |         .filter(|line| line.to_lowercase().contains(query.to_lowercase()))
[INFO] [stdout]      |                                            -------- ^^^^^^^^^^^^^^^^^^^^ expected an implementor of trait `Pattern<'_>`
[INFO] [stdout]      |                                            |
[INFO] [stdout]      |                                            required by a bound introduced by this call
[INFO] [stdout]      |
[INFO] [stdout]      = note: the trait bound `String: Pattern<'_>` is not satisfied
[INFO] [stdout]      = note: required because of the requirements on the impl of `Pattern<'_>` for `String`
[INFO] [stdout] note: required by a bound in `core::str::<impl str>::contains`
[INFO] [stdout] help: consider borrowing here
[INFO] [stdout]      |
[INFO] [stdout] 60   |         .filter(|line| line.to_lowercase().contains(&query.to_lowercase()))
[INFO] [stdout]      |                                                     +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0425.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mini_grep` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "7289dc6bd045fc28df4be2a7c78a8c02bf29493c3160145f6f6502f6657effcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7289dc6bd045fc28df4be2a7c78a8c02bf29493c3160145f6f6502f6657effcb", kill_on_drop: false }`
[INFO] [stdout] 7289dc6bd045fc28df4be2a7c78a8c02bf29493c3160145f6f6502f6657effcb