[INFO] cloning repository https://github.com/reccanti/ProjectEuler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/reccanti/ProjectEuler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freccanti%2FProjectEuler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freccanti%2FProjectEuler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e50d0dcc61a844d09f1212af9730dd874a6ffdd8
[INFO] testing reccanti/ProjectEuler against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freccanti%2FProjectEuler" "/workspace/builds/worker-23/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-23/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/reccanti/ProjectEuler on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/reccanti/ProjectEuler
[INFO] finished tweaking git repo https://github.com/reccanti/ProjectEuler
[INFO] tweaked toml for git repo https://github.com/reccanti/ProjectEuler written to /workspace/builds/worker-23/source/Cargo.toml
[INFO] crate git repo https://github.com/reccanti/ProjectEuler already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] adae640d9a2c5b383194b7237e9565860350aa9d89ee1cbaa39338e28d3be37c
[INFO] running `Command { std: "docker" "start" "-a" "adae640d9a2c5b383194b7237e9565860350aa9d89ee1cbaa39338e28d3be37c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "adae640d9a2c5b383194b7237e9565860350aa9d89ee1cbaa39338e28d3be37c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adae640d9a2c5b383194b7237e9565860350aa9d89ee1cbaa39338e28d3be37c", kill_on_drop: false }`
[INFO] [stdout] adae640d9a2c5b383194b7237e9565860350aa9d89ee1cbaa39338e28d3be37c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 772ccefc27239a09d3923a44d6002a474163a331f8a6087a3e8836c7bdea7c5a
[INFO] running `Command { std: "docker" "start" "-a" "772ccefc27239a09d3923a44d6002a474163a331f8a6087a3e8836c7bdea7c5a", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling num-bigint v0.2.0
[INFO] [stderr]    Compiling num-complex v0.2.0
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling problem_1 v0.1.0 (/opt/rustwide/workdir/problem_1)
[INFO] [stdout] warning: unused import: `test::Bencher`
[INFO] [stdout]  --> problem_1/src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use test::Bencher;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `problem_1` due to 2 previous errors; 2 warnings emitted
[INFO] [stdout] warning: function is never used: `get_sum_three_five_multiples`
[INFO] [stdout]  --> problem_1/src/main.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn get_sum_three_five_multiples(start: u32) -> u32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> problem_1/src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "772ccefc27239a09d3923a44d6002a474163a331f8a6087a3e8836c7bdea7c5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "772ccefc27239a09d3923a44d6002a474163a331f8a6087a3e8836c7bdea7c5a", kill_on_drop: false }`
[INFO] [stdout] 772ccefc27239a09d3923a44d6002a474163a331f8a6087a3e8836c7bdea7c5a