[INFO] cloning repository https://github.com/rarebreed/retro-service
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rarebreed/retro-service" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frarebreed%2Fretro-service", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frarebreed%2Fretro-service'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7fc4bbb06358c1438c6a8305ecad5c2dd4b14c2a
[INFO] checking rarebreed/retro-service against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frarebreed%2Fretro-service" "/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/rarebreed/retro-service on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rarebreed/retro-service
[INFO] finished tweaking git repo https://github.com/rarebreed/retro-service
[INFO] tweaked toml for git repo https://github.com/rarebreed/retro-service written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/rarebreed/retro-service already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2cf05f79622841f46c77f7661001431707018add1d5bf0bbc6578ad7ff90be7d
[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" "2cf05f79622841f46c77f7661001431707018add1d5bf0bbc6578ad7ff90be7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2cf05f79622841f46c77f7661001431707018add1d5bf0bbc6578ad7ff90be7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cf05f79622841f46c77f7661001431707018add1d5bf0bbc6578ad7ff90be7d", kill_on_drop: false }`
[INFO] [stdout] 2cf05f79622841f46c77f7661001431707018add1d5bf0bbc6578ad7ff90be7d
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c4d4071dc387d580be51200659d0b9554536522c16703ef9e462b3a32f0fdb5
[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" "6c4d4071dc387d580be51200659d0b9554536522c16703ef9e462b3a32f0fdb5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling syn v1.0.56
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking getrandom v0.2.0
[INFO] [stderr]     Checking rand_core v0.6.0
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.0
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]     Checking serde v1.0.118
[INFO] [stderr]     Checking serde_yaml v0.8.14
[INFO] [stderr]     Checking retro v0.1.0 (/opt/rustwide/workdir/retro)
[INFO] [stdout] warning: unused import: `HashMap`
[INFO] [stdout]   --> retro/src/tasks/probability.rs:15:24
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::collections::{HashMap};
[INFO] [stdout]    |                        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> retro/src/tasks/probability.rs:171:13
[INFO] [stdout]     |
[INFO] [stdout] 171 |         for n in 0..100000 {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `roll`
[INFO] [stdout]    --> retro/src/tasks/probability.rs:172:29
[INFO] [stdout]     |
[INFO] [stdout] 172 |             let (successes, roll) = get_successes(&pool, 5, 10);
[INFO] [stdout]     |                             ^^^^ help: if this is intentional, prefix it with an underscore: `_roll`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `foo`
[INFO] [stdout]    --> retro/src/tasks/probability.rs:185:13
[INFO] [stdout]     |
[INFO] [stdout] 185 |         let foo = avg.into_iter().fold(&mut scores, |acc, next| {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_foo`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.41s
[INFO] running `Command { std: "docker" "inspect" "6c4d4071dc387d580be51200659d0b9554536522c16703ef9e462b3a32f0fdb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c4d4071dc387d580be51200659d0b9554536522c16703ef9e462b3a32f0fdb5", kill_on_drop: false }`
[INFO] [stdout] 6c4d4071dc387d580be51200659d0b9554536522c16703ef9e462b3a32f0fdb5