[INFO] fetching crate Cantor-Pair 0.1.2...
[INFO] checking Cantor-Pair-0.1.2 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate Cantor-Pair 0.1.2 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate Cantor-Pair 0.1.2
[INFO] finished tweaking crates.io crate Cantor-Pair 0.1.2
[INFO] tweaked toml for crates.io crate Cantor-Pair 0.1.2 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate Cantor-Pair 0.1.2 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e10f20dd21132fa453bdf8e763da6c1a18cea912752a94038ecc607f2f2970c
[INFO] running `Command { std: "docker" "start" "-a" "2e10f20dd21132fa453bdf8e763da6c1a18cea912752a94038ecc607f2f2970c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e10f20dd21132fa453bdf8e763da6c1a18cea912752a94038ecc607f2f2970c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e10f20dd21132fa453bdf8e763da6c1a18cea912752a94038ecc607f2f2970c", kill_on_drop: false }`
[INFO] [stdout] 2e10f20dd21132fa453bdf8e763da6c1a18cea912752a94038ecc607f2f2970c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a30b2ec317eaa5c75809a1a7150bdc73543f7b5d87771199e44cb4f41f41aecd
[INFO] running `Command { std: "docker" "start" "-a" "a30b2ec317eaa5c75809a1a7150bdc73543f7b5d87771199e44cb4f41f41aecd", kill_on_drop: false }`
[INFO] [stderr]     Checking Cantor-Pair v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `cantor_pair` is never used
[INFO] [stdout]  --> src/lib.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn cantor_pair(n: &usize, m: &usize) -> usize {
[INFO] [stdout]   |    ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cantor_unpair` is never used
[INFO] [stdout]   --> src/lib.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn cantor_unpair(z: &usize) -> (usize, usize) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `Cantor_Pair` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `cantor_pair`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "a30b2ec317eaa5c75809a1a7150bdc73543f7b5d87771199e44cb4f41f41aecd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a30b2ec317eaa5c75809a1a7150bdc73543f7b5d87771199e44cb4f41f41aecd", kill_on_drop: false }`
[INFO] [stdout] a30b2ec317eaa5c75809a1a7150bdc73543f7b5d87771199e44cb4f41f41aecd