[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-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftsaraps%2Fmini_grep" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tsaraps/mini_grep on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-8/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-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f828764504aa9440548a673f579eb964727bea91d77118a2488a6516e9608a6c
[INFO] running `Command { std: "docker" "start" "-a" "f828764504aa9440548a673f579eb964727bea91d77118a2488a6516e9608a6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f828764504aa9440548a673f579eb964727bea91d77118a2488a6516e9608a6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f828764504aa9440548a673f579eb964727bea91d77118a2488a6516e9608a6c", kill_on_drop: false }`
[INFO] [stdout] f828764504aa9440548a673f579eb964727bea91d77118a2488a6516e9608a6c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e095f3b3da5feb3cfd56aad009cfe56c83b1abeb7f631545468bdb7b09266df5
[INFO] running `Command { std: "docker" "start" "-a" "e095f3b3da5feb3cfd56aad009cfe56c83b1abeb7f631545468bdb7b09266df5", 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" "e095f3b3da5feb3cfd56aad009cfe56c83b1abeb7f631545468bdb7b09266df5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e095f3b3da5feb3cfd56aad009cfe56c83b1abeb7f631545468bdb7b09266df5", kill_on_drop: false }`
[INFO] [stdout] e095f3b3da5feb3cfd56aad009cfe56c83b1abeb7f631545468bdb7b09266df5