[INFO] cloning repository https://github.com/jojohanhannesnes/thousand_island
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jojohanhannesnes/thousand_island" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjojohanhannesnes%2Fthousand_island", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjojohanhannesnes%2Fthousand_island'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b7cb0b3e976eb04137e854f6ec1cb568565cf5a8
[INFO] checking jojohanhannesnes/thousand_island against try#a7b168ac4977e8e93a43448b44847adaa305d5a9 for pr-150557
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjojohanhannesnes%2Fthousand_island" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jojohanhannesnes/thousand_island
[INFO] finished tweaking git repo https://github.com/jojohanhannesnes/thousand_island
[INFO] tweaked toml for git repo https://github.com/jojohanhannesnes/thousand_island written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jojohanhannesnes/thousand_island on toolchain a7b168ac4977e8e93a43448b44847adaa305d5a9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jojohanhannesnes/thousand_island 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" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded getrandom v0.2.14
[INFO] [stderr]   Downloaded syn v2.0.58
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9aa9b84ce3f498655fc0f3675cde7bced37e10dd3cb5b7478adc45f3a46ece6a
[INFO] running `Command { std: "docker" "start" "-a" "9aa9b84ce3f498655fc0f3675cde7bced37e10dd3cb5b7478adc45f3a46ece6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9aa9b84ce3f498655fc0f3675cde7bced37e10dd3cb5b7478adc45f3a46ece6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9aa9b84ce3f498655fc0f3675cde7bced37e10dd3cb5b7478adc45f3a46ece6a", kill_on_drop: false }`
[INFO] [stdout] 9aa9b84ce3f498655fc0f3675cde7bced37e10dd3cb5b7478adc45f3a46ece6a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 511faa89e417d29628d2e5554a16997bbcd7114fd34b37d97320c178cc2919a4
[INFO] running `Command { std: "docker" "start" "-a" "511faa89e417d29628d2e5554a16997bbcd7114fd34b37d97320c178cc2919a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking algorithms v0.1.0 (/opt/rustwide/workdir/algorithms)
[INFO] [stderr]     Checking time v0.3.34
[INFO] [stdout] warning: struct `Edge` is never constructed
[INFO] [stdout]  --> algorithms/src/boruvkas.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Edge {
[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 `Graph` is never constructed
[INFO] [stdout]   --> algorithms/src/boruvkas.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Graph {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `boruvkas_algorithm` is never used
[INFO] [stdout]   --> algorithms/src/boruvkas.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn boruvkas_algorithm(graph: &Graph) -> Vec<Edge> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Edge` is never constructed
[INFO] [stdout]  --> algorithms/src/boruvkas.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Edge {
[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 `Graph` is never constructed
[INFO] [stdout]   --> algorithms/src/boruvkas.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Graph {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `boruvkas_algorithm` is never used
[INFO] [stdout]   --> algorithms/src/boruvkas.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn boruvkas_algorithm(graph: &Graph) -> Vec<Edge> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking getrandom v0.2.14
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking challenges v0.1.0 (/opt/rustwide/workdir/challenges)
[INFO] [stdout] warning: unexpected `cfg` condition value: `grapheme`
[INFO] [stdout]   --> challenges/src/exercism/reverse_string.rs:55:7
[INFO] [stdout]    |
[INFO] [stdout] 55 | #[cfg(feature = "grapheme")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `grapheme` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CONTENTS` is never used
[INFO] [stdout]  --> challenges/src/euler/largest_product_in_grid.rs:1:7
[INFO] [stdout]   |
[INFO] [stdout] 1 | const CONTENTS: &str = "
[INFO] [stdout]   |       ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `largest_product_in_grid` is never used
[INFO] [stdout]   --> challenges/src/euler/largest_product_in_grid.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn largest_product_in_grid() -> u64 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `grapheme`
[INFO] [stdout]   --> challenges/src/exercism/reverse_string.rs:55:7
[INFO] [stdout]    |
[INFO] [stdout] 55 | #[cfg(feature = "grapheme")]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `grapheme` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.98s
[INFO] running `Command { std: "docker" "inspect" "511faa89e417d29628d2e5554a16997bbcd7114fd34b37d97320c178cc2919a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "511faa89e417d29628d2e5554a16997bbcd7114fd34b37d97320c178cc2919a4", kill_on_drop: false }`
[INFO] [stdout] 511faa89e417d29628d2e5554a16997bbcd7114fd34b37d97320c178cc2919a4
