[INFO] cloning repository https://github.com/Nakamurus/rust_minigrep
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Nakamurus/rust_minigrep" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNakamurus%2Frust_minigrep", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNakamurus%2Frust_minigrep'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2a16088428f3ec22196aad4cfc8f91af8d212942
[INFO] checking Nakamurus/rust_minigrep against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNakamurus%2Frust_minigrep" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Nakamurus/rust_minigrep on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Nakamurus/rust_minigrep
[INFO] finished tweaking git repo https://github.com/Nakamurus/rust_minigrep
[INFO] tweaked toml for git repo https://github.com/Nakamurus/rust_minigrep written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/Nakamurus/rust_minigrep already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 84031215d961faacbf903a528ced7a4aa2c7522a3acf161c4fdc20479eb8b104
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "84031215d961faacbf903a528ced7a4aa2c7522a3acf161c4fdc20479eb8b104", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84031215d961faacbf903a528ced7a4aa2c7522a3acf161c4fdc20479eb8b104", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84031215d961faacbf903a528ced7a4aa2c7522a3acf161c4fdc20479eb8b104", kill_on_drop: false }`
[INFO] [stdout] 84031215d961faacbf903a528ced7a4aa2c7522a3acf161c4fdc20479eb8b104
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=forbid" "-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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5df947640ea22241b831949ce11a727e3c5d445090ae2e7101e3ecf417499cb4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5df947640ea22241b831949ce11a727e3c5d445090ae2e7101e3ecf417499cb4", kill_on_drop: false }`
[INFO] [stderr]     Checking minigrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected expression, found `.`
[INFO] [stdout]   --> src/lib.rs:16:26
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let query = match.args.next() {
[INFO] [stdout]    |                     -----^ expected expression
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     while parsing this match expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected expression, found `.`
[INFO] [stdout]   --> src/lib.rs:16:26
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let query = match.args.next() {
[INFO] [stdout]    |                     -----^ expected expression
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     while parsing this match expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:46:46
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn run(config: Config) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:46:46
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn run(config: Config) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/lib.rs:79:10
[INFO] [stdout]    |
[INFO] [stdout] 79 | /          contents.lines()
[INFO] [stdout] 80 | |              .filter(|line| line.to_lowercase().contains(&query))
[INFO] [stdout]    | |_________________________________________________________________^ expected struct `Vec`, found struct `Filter`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Vec<&'a str>`
[INFO] [stdout]               found struct `Filter<std::str::Lines<'_>, [closure@src/lib.rs:80:22: 80:65]>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `minigrep`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/lib.rs:79:10
[INFO] [stdout]    |
[INFO] [stdout] 79 | /          contents.lines()
[INFO] [stdout] 80 | |              .filter(|line| line.to_lowercase().contains(&query))
[INFO] [stdout]    | |_________________________________________________________________^ expected struct `Vec`, found struct `Filter`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Vec<&'a str>`
[INFO] [stdout]               found struct `Filter<std::str::Lines<'_>, [closure@src/lib.rs:80:22: 80:65]>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "5df947640ea22241b831949ce11a727e3c5d445090ae2e7101e3ecf417499cb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5df947640ea22241b831949ce11a727e3c5d445090ae2e7101e3ecf417499cb4", kill_on_drop: false }`
[INFO] [stdout] 5df947640ea22241b831949ce11a727e3c5d445090ae2e7101e3ecf417499cb4