[INFO] cloning repository https://github.com/auctumnus/hm-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/auctumnus/hm-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fauctumnus%2Fhm-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fauctumnus%2Fhm-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 098ac2b0b800bbd0dffe7af9ec207319bf4d6ca2
[INFO] checking auctumnus/hm-rust against f4dd856795debe636f2ba39a900f162f5abeb7e8 for pr-160904
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fauctumnus%2Fhm-rust" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/auctumnus/hm-rust
[INFO] finished tweaking git repo https://github.com/auctumnus/hm-rust
[INFO] tweaked toml for git repo https://github.com/auctumnus/hm-rust written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/auctumnus/hm-rust on toolchain f4dd856795debe636f2ba39a900f162f5abeb7e8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f4dd856795debe636f2ba39a900f162f5abeb7e8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/auctumnus/hm-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f4dd856795debe636f2ba39a900f162f5abeb7e8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] cfe6e891e177d9d5110e725ab54d26d1e5fd1ac28cba2826de6265ad491b4699
[INFO] running `Command { std: "docker" "start" "cfe6e891e177d9d5110e725ab54d26d1e5fd1ac28cba2826de6265ad491b4699", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cfe6e891e177d9d5110e725ab54d26d1e5fd1ac28cba2826de6265ad491b4699", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "cfe6e891e177d9d5110e725ab54d26d1e5fd1ac28cba2826de6265ad491b4699" "/opt/rustwide/cargo-home/bin/cargo" "+f4dd856795debe636f2ba39a900f162f5abeb7e8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cfe6e891e177d9d5110e725ab54d26d1e5fd1ac28cba2826de6265ad491b4699", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "cfe6e891e177d9d5110e725ab54d26d1e5fd1ac28cba2826de6265ad491b4699" "/opt/rustwide/cargo-home/bin/cargo" "+f4dd856795debe636f2ba39a900f162f5abeb7e8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking hm-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `env`
[INFO] [stdout]  --> src/main.rs:1:44
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::{HashMap, HashSet}, env, fmt::{self, Display}, sync::atomic::AtomicUsize};
[INFO] [stdout]   |                                            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `env`
[INFO] [stdout]  --> src/main.rs:1:44
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::{HashMap, HashSet}, env, fmt::{self, Display}, sync::atomic::AtomicUsize};
[INFO] [stdout]   |                                            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/main.rs:485:9
[INFO] [stdout]     |
[INFO] [stdout] 485 |         _ => unimplemented!()
[INFO] [stdout]     |         ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/main.rs:485:9
[INFO] [stdout]     |
[INFO] [stdout] 361 |         Int(_) => (Monotype::Int, vec![]),
[INFO] [stdout]     |         ------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 366 |         Bool(_) => (Monotype::Bool, vec![]),
[INFO] [stdout]     |         ------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 370 |         Var(x) => {
[INFO] [stdout]     |         ------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 380 |         App(func, arg) => {
[INFO] [stdout]     |         -------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 485 |         _ => unimplemented!()
[INFO] [stdout]     |         ^ ...and 3 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/main.rs:485:9
[INFO] [stdout]     |
[INFO] [stdout] 485 |         _ => unimplemented!()
[INFO] [stdout]     |         ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/main.rs:485:9
[INFO] [stdout]     |
[INFO] [stdout] 361 |         Int(_) => (Monotype::Int, vec![]),
[INFO] [stdout]     |         ------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 366 |         Bool(_) => (Monotype::Bool, vec![]),
[INFO] [stdout]     |         ------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 370 |         Var(x) => {
[INFO] [stdout]     |         ------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 380 |         App(func, arg) => {
[INFO] [stdout]     |         -------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 485 |         _ => unimplemented!()
[INFO] [stdout]     |         ^ ...and 3 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `const_fn_applied`
[INFO] [stdout]    --> src/main.rs:552:9
[INFO] [stdout]     |
[INFO] [stdout] 552 |     let const_fn_applied = Expr::App(
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_const_fn_applied`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `const_fn_applied`
[INFO] [stdout]    --> src/main.rs:552:9
[INFO] [stdout]     |
[INFO] [stdout] 552 |     let const_fn_applied = Expr::App(
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_const_fn_applied`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "cfe6e891e177d9d5110e725ab54d26d1e5fd1ac28cba2826de6265ad491b4699", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfe6e891e177d9d5110e725ab54d26d1e5fd1ac28cba2826de6265ad491b4699", kill_on_drop: false }`
[INFO] [stdout] cfe6e891e177d9d5110e725ab54d26d1e5fd1ac28cba2826de6265ad491b4699
