[INFO] cloning repository https://github.com/mihaimaganu17/mm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mihaimaganu17/mm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmihaimaganu17%2Fmm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmihaimaganu17%2Fmm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cc36bb7a7212d4c5b96b39c9e67a0334110c41b5
[INFO] checking mihaimaganu17/mm against master#642c19bfc3a5c1de985bf5d0cc8207ac9d22708a for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmihaimaganu17%2Fmm" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mihaimaganu17/mm
[INFO] finished tweaking git repo https://github.com/mihaimaganu17/mm
[INFO] tweaked toml for git repo https://github.com/mihaimaganu17/mm written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mihaimaganu17/mm on toolchain 642c19bfc3a5c1de985bf5d0cc8207ac9d22708a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mihaimaganu17/mm 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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 337f51a1eeb9b779ff231035fd6e729881f871beab31c9cfb1f3a3e528181bcd
[INFO] running `Command { std: "docker" "start" "-a" "337f51a1eeb9b779ff231035fd6e729881f871beab31c9cfb1f3a3e528181bcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "337f51a1eeb9b779ff231035fd6e729881f871beab31c9cfb1f3a3e528181bcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "337f51a1eeb9b779ff231035fd6e729881f871beab31c9cfb1f3a3e528181bcd", kill_on_drop: false }`
[INFO] [stdout] 337f51a1eeb9b779ff231035fd6e729881f871beab31c9cfb1f3a3e528181bcd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1a601ada0afc5ce494f4d0c3a7cf04aea10d7c232164a3ed01c96d4176c68e2c
[INFO] running `Command { std: "docker" "start" "-a" "1a601ada0afc5ce494f4d0c3a7cf04aea10d7c232164a3ed01c96d4176c68e2c", kill_on_drop: false }`
[INFO] [stderr]     Checking mm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant `MEM_POOL_SIZE` is never used
[INFO] [stdout]  --> src/alloc.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | const MEM_POOL_SIZE: usize = 256 * 10024;
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MmAllocator` is never constructed
[INFO] [stdout]   --> src/alloc.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct MmAllocator {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MEM_POOL_SIZE` is never used
[INFO] [stdout]  --> src/alloc.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | const MEM_POOL_SIZE: usize = 256 * 10024;
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MmAllocator` is never constructed
[INFO] [stdout]   --> src/alloc.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct MmAllocator {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "1a601ada0afc5ce494f4d0c3a7cf04aea10d7c232164a3ed01c96d4176c68e2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a601ada0afc5ce494f4d0c3a7cf04aea10d7c232164a3ed01c96d4176c68e2c", kill_on_drop: false }`
[INFO] [stdout] 1a601ada0afc5ce494f4d0c3a7cf04aea10d7c232164a3ed01c96d4176c68e2c