[INFO] cloning repository https://github.com/finnkauski/my-grep
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/finnkauski/my-grep" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffinnkauski%2Fmy-grep", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffinnkauski%2Fmy-grep'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 376c6d0edaf3010cf2c26fd723d6e4d668e5cf4e
[INFO] checking finnkauski/my-grep against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffinnkauski%2Fmy-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/finnkauski/my-grep 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/finnkauski/my-grep
[INFO] finished tweaking git repo https://github.com/finnkauski/my-grep
[INFO] tweaked toml for git repo https://github.com/finnkauski/my-grep written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/finnkauski/my-grep 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-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" "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] 12398fca7e85aec0bc47fe0f1cb9f2de34fdecbf94909925475f47773af65656
[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" "12398fca7e85aec0bc47fe0f1cb9f2de34fdecbf94909925475f47773af65656", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "12398fca7e85aec0bc47fe0f1cb9f2de34fdecbf94909925475f47773af65656", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12398fca7e85aec0bc47fe0f1cb9f2de34fdecbf94909925475f47773af65656", kill_on_drop: false }`
[INFO] [stdout] 12398fca7e85aec0bc47fe0f1cb9f2de34fdecbf94909925475f47773af65656
[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=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] 5d6f5e567a97cb554cc1a3359b7bf345af5a3b886648da19f9017faaa372614d
[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" "5d6f5e567a97cb554cc1a3359b7bf345af5a3b886648da19f9017faaa372614d", kill_on_drop: false }`
[INFO] [stderr]     Checking my-grep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `my-grep`
[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[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/main.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 3 arguments but 2 arguments were supplied
[INFO] [stdout]   --> src/main.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub(crate) fn search(filename: &str, pattern: &str, contents: String) -> SearchResults {
[INFO] [stdout]    |     -------------------------------------------------------------------------------------- defined here
[INFO] [stdout] ...
[INFO] [stdout] 63 |             search(pattern, String::from(contents)),
[INFO] [stdout]    |             ^^^^^^ -------  ---------------------- supplied 2 arguments
[INFO] [stdout]    |             |
[INFO] [stdout]    |             expected 3 arguments
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 3 arguments but 2 arguments were supplied
[INFO] [stdout]   --> src/main.rs:64:18
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub(crate) fn format_line(filename: &str, idx: usize, line: &str) -> String {
[INFO] [stdout]    |     --------------------------------------------------------------------------- defined here
[INFO] [stdout] ...
[INFO] [stdout] 64 |             vec![format_line(2, "testingFOOBARline3")]
[INFO] [stdout]    |                  ^^^^^^^^^^^ -  -------------------- supplied 2 arguments
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  expected 3 arguments
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 3 arguments but 2 arguments were supplied
[INFO] [stdout]   --> src/main.rs:75:29
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub(crate) fn format_line(filename: &str, idx: usize, line: &str) -> String {
[INFO] [stdout]    |     --------------------------------------------------------------------------- defined here
[INFO] [stdout] ...
[INFO] [stdout] 75 |             .map(|(idx, l)| format_line(idx, l))
[INFO] [stdout]    |                             ^^^^^^^^^^^ ---  - supplied 2 arguments
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             expected 3 arguments
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 3 arguments but 2 arguments were supplied
[INFO] [stdout]   --> src/main.rs:77:22
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub(crate) fn search(filename: &str, pattern: &str, contents: String) -> SearchResults {
[INFO] [stdout]    |     -------------------------------------------------------------------------------------- defined here
[INFO] [stdout] ...
[INFO] [stdout] 77 |         let result = search(pattern, String::from(contents));
[INFO] [stdout]    |                      ^^^^^^ -------  ---------------------- supplied 2 arguments
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      expected 3 arguments
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 3 arguments but 2 arguments were supplied
[INFO] [stdout]   --> src/main.rs:86:22
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub(crate) fn search(filename: &str, pattern: &str, contents: String) -> SearchResults {
[INFO] [stdout]    |     -------------------------------------------------------------------------------------- defined here
[INFO] [stdout] ...
[INFO] [stdout] 86 |         let result = search(pattern, String::from(contents));
[INFO] [stdout]    |                      ^^^^^^ -------  ---------------------- supplied 2 arguments
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      expected 3 arguments
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0061, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0061`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "5d6f5e567a97cb554cc1a3359b7bf345af5a3b886648da19f9017faaa372614d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d6f5e567a97cb554cc1a3359b7bf345af5a3b886648da19f9017faaa372614d", kill_on_drop: false }`
[INFO] [stdout] 5d6f5e567a97cb554cc1a3359b7bf345af5a3b886648da19f9017faaa372614d