[INFO] cloning repository https://github.com/Qwertee/Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Qwertee/Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FQwertee%2FRust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FQwertee%2FRust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c2c0f36e776e9f67457d46f3449a716ad4a7b1fe
[INFO] checking Qwertee/Rust against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FQwertee%2FRust" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Qwertee/Rust on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Qwertee/Rust
[INFO] finished tweaking git repo https://github.com/Qwertee/Rust
[INFO] tweaked toml for git repo https://github.com/Qwertee/Rust written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/Qwertee/Rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f1ca57f3720b90ec2650c5989d6d9c7c82d296a18679a9da21cb5c18967a50fc
[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" "f1ca57f3720b90ec2650c5989d6d9c7c82d296a18679a9da21cb5c18967a50fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1ca57f3720b90ec2650c5989d6d9c7c82d296a18679a9da21cb5c18967a50fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1ca57f3720b90ec2650c5989d6d9c7c82d296a18679a9da21cb5c18967a50fc", kill_on_drop: false }`
[INFO] [stdout] f1ca57f3720b90ec2650c5989d6d9c7c82d296a18679a9da21cb5c18967a50fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--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] 7dadea667cb1b992b8b793e53b9e06ca7eb48f34bfcf6b2723874577a2d4de2d
[INFO] running `Command { std: "docker" "start" "-a" "7dadea667cb1b992b8b793e53b9e06ca7eb48f34bfcf6b2723874577a2d4de2d", kill_on_drop: false }`
[INFO] [stderr]     Checking learn_rust v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected `;`, found keyword `let`
[INFO] [stdout]  --> src/main.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let b = [0; 20]    // b: [i32; 20]
[INFO] [stdout]   |                    ^ help: add `;` here
[INFO] [stdout] 6 | 
[INFO] [stdout] 7 |     let c: (i32, &str) = (1, "Hello");  // tuple
[INFO] [stdout]   |     --- unexpected token
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected `;`, found keyword `let`
[INFO] [stdout]  --> src/main.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let b = [0; 20]    // b: [i32; 20]
[INFO] [stdout]   |                    ^ help: add `;` here
[INFO] [stdout] 6 | 
[INFO] [stdout] 7 |     let c: (i32, &str) = (1, "Hello");  // tuple
[INFO] [stdout]   |     --- unexpected token
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `learn_rust`
[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: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "7dadea667cb1b992b8b793e53b9e06ca7eb48f34bfcf6b2723874577a2d4de2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7dadea667cb1b992b8b793e53b9e06ca7eb48f34bfcf6b2723874577a2d4de2d", kill_on_drop: false }`
[INFO] [stdout] 7dadea667cb1b992b8b793e53b9e06ca7eb48f34bfcf6b2723874577a2d4de2d