[INFO] cloning repository https://github.com/CptBread/mpmp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CptBread/mpmp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCptBread%2Fmpmp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCptBread%2Fmpmp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5e1ddbf1e1107a2f9fb93eedeabc52b08e682577
[INFO] checking CptBread/mpmp against try#99a443d6903f71d521237d8acb5a3016b534d17b for pr-83354
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCptBread%2Fmpmp" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CptBread/mpmp on toolchain 99a443d6903f71d521237d8acb5a3016b534d17b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/CptBread/mpmp
[INFO] finished tweaking git repo https://github.com/CptBread/mpmp
[INFO] tweaked toml for git repo https://github.com/CptBread/mpmp written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/CptBread/mpmp already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4bf70d775c8a094b06de1ef95aa9fb509f5270dfa29f062e314b5b56d8b86b66
[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" "4bf70d775c8a094b06de1ef95aa9fb509f5270dfa29f062e314b5b56d8b86b66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4bf70d775c8a094b06de1ef95aa9fb509f5270dfa29f062e314b5b56d8b86b66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bf70d775c8a094b06de1ef95aa9fb509f5270dfa29f062e314b5b56d8b86b66", kill_on_drop: false }`
[INFO] [stdout] 4bf70d775c8a094b06de1ef95aa9fb509f5270dfa29f062e314b5b56d8b86b66
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8982db38bc1f20cd8813fbfcef0556cf341c5f5da72d1bc013ed25f84f04cb82
[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" "8982db38bc1f20cd8813fbfcef0556cf341c5f5da72d1bc013ed25f84f04cb82", kill_on_drop: false }`
[INFO] [stderr]     Checking mpmp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/unique_dist.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{self, Read};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/unique_dist.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{self, Read};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next`
[INFO] [stdout]   --> src/unique_dist.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn next(&self) -> Option<Self> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_int`
[INFO] [stdout]    --> src/unique_dist.rs:346:4
[INFO] [stdout]     |
[INFO] [stdout] 346 | fn read_int() -> Option<usize> {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next`
[INFO] [stdout]   --> src/unique_dist.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn next(&self) -> Option<Self> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_int`
[INFO] [stdout]    --> src/unique_dist.rs:346:4
[INFO] [stdout]     |
[INFO] [stdout] 346 | fn read_int() -> Option<usize> {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `Command { std: "docker" "inspect" "8982db38bc1f20cd8813fbfcef0556cf341c5f5da72d1bc013ed25f84f04cb82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8982db38bc1f20cd8813fbfcef0556cf341c5f5da72d1bc013ed25f84f04cb82", kill_on_drop: false }`
[INFO] [stdout] 8982db38bc1f20cd8813fbfcef0556cf341c5f5da72d1bc013ed25f84f04cb82