[INFO] cloning repository https://github.com/z463006889/concurrency
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/z463006889/concurrency" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fz463006889%2Fconcurrency", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fz463006889%2Fconcurrency'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2dfc6c8e645abab54e798b264432166741b4897b
[INFO] checking z463006889/concurrency against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fz463006889%2Fconcurrency" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/z463006889/concurrency on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/z463006889/concurrency
[INFO] finished tweaking git repo https://github.com/z463006889/concurrency
[INFO] tweaked toml for git repo https://github.com/z463006889/concurrency written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/z463006889/concurrency 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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "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-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 05bfa14cba8de0ce4d9c6dd370b55a749c9e1c1793f0fa3e6abbefbf7555e943
[INFO] running `Command { std: "docker" "start" "-a" "05bfa14cba8de0ce4d9c6dd370b55a749c9e1c1793f0fa3e6abbefbf7555e943", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "05bfa14cba8de0ce4d9c6dd370b55a749c9e1c1793f0fa3e6abbefbf7555e943", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05bfa14cba8de0ce4d9c6dd370b55a749c9e1c1793f0fa3e6abbefbf7555e943", kill_on_drop: false }`
[INFO] [stdout] 05bfa14cba8de0ce4d9c6dd370b55a749c9e1c1793f0fa3e6abbefbf7555e943
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da80e018262ae2e770ddb0c1d34a276a639a32f00e4f623a0503409b539c2601
[INFO] running `Command { std: "docker" "start" "-a" "da80e018262ae2e770ddb0c1d34a276a639a32f00e4f623a0503409b539c2601", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling matrixmultiply v0.3.9
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling anyhow v1.0.86
[INFO] [stderr]    Compiling syn v2.0.74
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking ndarray v0.16.0
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking template v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Display`
[INFO] [stdout]  --> examples/matrix.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{fmt::{Debug, Display}, ops::{Add, AddAssign, Mul}};
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Matrix` is never constructed
[INFO] [stdout]  --> examples/matrix.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Matrix<T> 
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> examples/matrix.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl <T:Debug>Matrix<T> {
[INFO] [stdout]    | ----------------------- associated function in this implementation
[INFO] [stdout] 16 |     fn new(data: impl Into<Vec<T>>, rows: usize, cols:usize) -> Self{
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mutiply` is never used
[INFO] [stdout]   --> examples/matrix.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn mutiply<T>(a:Matrix<T>,b:Matrix<T>)->Result<Matrix<T>> 
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.59s
[INFO] running `Command { std: "docker" "inspect" "da80e018262ae2e770ddb0c1d34a276a639a32f00e4f623a0503409b539c2601", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da80e018262ae2e770ddb0c1d34a276a639a32f00e4f623a0503409b539c2601", kill_on_drop: false }`
[INFO] [stdout] da80e018262ae2e770ddb0c1d34a276a639a32f00e4f623a0503409b539c2601