[INFO] cloning repository https://github.com/crestenstclair/grokking_algos_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/crestenstclair/grokking_algos_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrestenstclair%2Fgrokking_algos_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrestenstclair%2Fgrokking_algos_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 765e650d5e7675f48d9ea78d933f1cb043969dcb
[INFO] checking crestenstclair/grokking_algos_rust against master#119d2a1a98fe87d4ae6cabf12134a0ef2fb95851 for pr-75180
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrestenstclair%2Fgrokking_algos_rust" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/crestenstclair/grokking_algos_rust on toolchain 119d2a1a98fe87d4ae6cabf12134a0ef2fb95851
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+119d2a1a98fe87d4ae6cabf12134a0ef2fb95851" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/crestenstclair/grokking_algos_rust
[INFO] finished tweaking git repo https://github.com/crestenstclair/grokking_algos_rust
[INFO] tweaked toml for git repo https://github.com/crestenstclair/grokking_algos_rust written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/crestenstclair/grokking_algos_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+119d2a1a98fe87d4ae6cabf12134a0ef2fb95851" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+119d2a1a98fe87d4ae6cabf12134a0ef2fb95851" "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] ecb2ae793237c2d14e1b42400f41747b5ddcfcc111b21099b73764baa347c93d
[INFO] running `Command { std: "docker" "start" "-a" "ecb2ae793237c2d14e1b42400f41747b5ddcfcc111b21099b73764baa347c93d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ecb2ae793237c2d14e1b42400f41747b5ddcfcc111b21099b73764baa347c93d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ecb2ae793237c2d14e1b42400f41747b5ddcfcc111b21099b73764baa347c93d", kill_on_drop: false }`
[INFO] [stdout] ecb2ae793237c2d14e1b42400f41747b5ddcfcc111b21099b73764baa347c93d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+119d2a1a98fe87d4ae6cabf12134a0ef2fb95851" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6200b758150caabf527668fa20419d5ed78895d02305a6bcf1c0b5ac432154b9
[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" "6200b758150caabf527668fa20419d5ed78895d02305a6bcf1c0b5ac432154b9", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]     Checking grokking_algorithms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0601]: `main` function not found in crate `grokking_algorithms`
[INFO] [stdout]    --> src/main.rs:1:1
[INFO] [stdout]     |
[INFO] [stdout] 1   | / extern crate uuid;
[INFO] [stdout] 2   | | use std::collections::HashMap;
[INFO] [stdout] 3   | | use uuid::Uuid;
[INFO] [stdout] 4   | |
[INFO] [stdout] ...   |
[INFO] [stdout] 248 | |     }
[INFO] [stdout] 249 | | }
[INFO] [stdout]     | |_^ consider adding a `main` function to `src/main.rs`
[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 E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `grokking_algorithms`.
[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] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "6200b758150caabf527668fa20419d5ed78895d02305a6bcf1c0b5ac432154b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6200b758150caabf527668fa20419d5ed78895d02305a6bcf1c0b5ac432154b9", kill_on_drop: false }`
[INFO] [stdout] 6200b758150caabf527668fa20419d5ed78895d02305a6bcf1c0b5ac432154b9