[INFO] cloning repository https://github.com/ajpierce/euler-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ajpierce/euler-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajpierce%2Feuler-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajpierce%2Feuler-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 606b682bd8daf7e9449a46b589098f0c63ec4746
[INFO] testing ajpierce/euler-rust against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajpierce%2Feuler-rust" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ajpierce/euler-rust on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ajpierce/euler-rust
[INFO] finished tweaking git repo https://github.com/ajpierce/euler-rust
[INFO] tweaked toml for git repo https://github.com/ajpierce/euler-rust written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/ajpierce/euler-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--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 primes v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5901ef7504d005e85b71a8a4d621ed4bc22e6ce9e3f848e58b12e4f63b376731
[INFO] running `Command { std: "docker" "start" "-a" "5901ef7504d005e85b71a8a4d621ed4bc22e6ce9e3f848e58b12e4f63b376731", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5901ef7504d005e85b71a8a4d621ed4bc22e6ce9e3f848e58b12e4f63b376731", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5901ef7504d005e85b71a8a4d621ed4bc22e6ce9e3f848e58b12e4f63b376731", kill_on_drop: false }`
[INFO] [stdout] 5901ef7504d005e85b71a8a4d621ed4bc22e6ce9e3f848e58b12e4f63b376731
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ba6aae976b253e8bd4fbc3cba6b2c1b6a9c46d3dc08ff221118aeba1cfbb536
[INFO] running `Command { std: "docker" "start" "-a" "6ba6aae976b253e8bd4fbc3cba6b2c1b6a9c46d3dc08ff221118aeba1cfbb536", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling num-traits v0.2.2
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling libc v0.2.40
[INFO] [stderr]    Compiling primes v0.2.0
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling num-integer v0.1.36
[INFO] [stderr]    Compiling num-iter v0.1.35
[INFO] [stderr]    Compiling num-bigint v0.1.43
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling euler-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `test::Bencher`
[INFO] [stdout]  --> src/p005.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] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/p005.rs:34:19
[INFO] [stdout]    |
[INFO] [stdout] 34 |         } else if (answer % 20 == 0) {
[INFO] [stdout]    |                   ^                ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 34 -         } else if (answer % 20 == 0) {
[INFO] [stdout] 34 +         } else if answer % 20 == 0 {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `for_sum`
[INFO] [stdout]   --> src/p001.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn for_sum(max: i32) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `solve_while`
[INFO] [stdout]   --> src/p002.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn solve_while(limit: u32) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `solve_for`
[INFO] [stdout]   --> src/p002.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn solve_for(limit: u32) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `solve_takewhile`
[INFO] [stdout]   --> src/p002.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn solve_takewhile(limit: u32) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `solve_takewhile_filter_mutable`
[INFO] [stdout]   --> src/p002.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn solve_takewhile_filter_mutable(limit: u32) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `solve_big`
[INFO] [stdout]   --> src/p005.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn solve_big(min: u64, max: u64) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `solve_vbig`
[INFO] [stdout]   --> src/p005.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn solve_vbig(min: u64, max: u64) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> 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; 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `euler-rust` due to 2 previous errors; 9 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "6ba6aae976b253e8bd4fbc3cba6b2c1b6a9c46d3dc08ff221118aeba1cfbb536", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ba6aae976b253e8bd4fbc3cba6b2c1b6a9c46d3dc08ff221118aeba1cfbb536", kill_on_drop: false }`
[INFO] [stdout] 6ba6aae976b253e8bd4fbc3cba6b2c1b6a9c46d3dc08ff221118aeba1cfbb536