[INFO] cloning repository https://github.com/rektdeckard/rust-concepts
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rektdeckard/rust-concepts" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frektdeckard%2Frust-concepts", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frektdeckard%2Frust-concepts'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b3919b8ce65f6ae0483cbf3a0bcb08825818624e
[INFO] checking rektdeckard/rust-concepts against try#4a04890980766cc79878135f5ade8c0c4321e943 for pr-65819
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frektdeckard%2Frust-concepts" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rektdeckard/rust-concepts on toolchain 4a04890980766cc79878135f5ade8c0c4321e943
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rektdeckard/rust-concepts
[INFO] finished tweaking git repo https://github.com/rektdeckard/rust-concepts
[INFO] tweaked toml for git repo https://github.com/rektdeckard/rust-concepts written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/rektdeckard/rust-concepts already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.82
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1c9b0579fdb62b9bdcdcba59e355a0136be80a7b59b24dd7c221b48050f782c4
[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" "1c9b0579fdb62b9bdcdcba59e355a0136be80a7b59b24dd7c221b48050f782c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c9b0579fdb62b9bdcdcba59e355a0136be80a7b59b24dd7c221b48050f782c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c9b0579fdb62b9bdcdcba59e355a0136be80a7b59b24dd7c221b48050f782c4", kill_on_drop: false }`
[INFO] [stdout] 1c9b0579fdb62b9bdcdcba59e355a0136be80a7b59b24dd7c221b48050f782c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8e1a050b924a017e479eb1101cba2aae5c1682416fbc0261d539dc314eca048c
[INFO] running `Command { std: "docker" "start" "-a" "8e1a050b924a017e479eb1101cba2aae5c1682416fbc0261d539dc314eca048c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]     Checking minigrep v0.1.0 (/opt/rustwide/workdir/minigrep)
[INFO] [stderr]     Checking vector v0.1.0 (/opt/rustwide/workdir/vector)
[INFO] [stderr]     Checking concurrency v0.1.0 (/opt/rustwide/workdir/concurrency)
[INFO] [stderr]     Checking standard v0.1.0 (/opt/rustwide/workdir/standard)
[INFO] [stderr]     Checking linked-list v0.1.0 (/opt/rustwide/workdir/linked-list)
[INFO] [stderr]     Checking smart-pointers v0.1.0 (/opt/rustwide/workdir/smart-pointers)
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking traits v0.1.0 (/opt/rustwide/workdir/traits)
[INFO] [stdout] warning: field is never read: `celcius`
[INFO] [stdout]  --> traits/src/convert.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     celcius: f64,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> traits/src/convert.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn new(celcius: f64) -> Temperature {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `in_fahrenheit`
[INFO] [stdout]   --> traits/src/convert.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn in_fahrenheit(&self) -> f64 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `in_celcius`
[INFO] [stdout]   --> traits/src/convert.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn in_celcius(&self) -> f64 {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `in_kelvin`
[INFO] [stdout]   --> traits/src/convert.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn in_kelvin(&self) -> f64 {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.88s
[INFO] running `Command { std: "docker" "inspect" "8e1a050b924a017e479eb1101cba2aae5c1682416fbc0261d539dc314eca048c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e1a050b924a017e479eb1101cba2aae5c1682416fbc0261d539dc314eca048c", kill_on_drop: false }`
[INFO] [stdout] 8e1a050b924a017e479eb1101cba2aae5c1682416fbc0261d539dc314eca048c