[INFO] cloning repository https://github.com/rHermes/rusty-euler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rHermes/rusty-euler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FrHermes%2Frusty-euler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FrHermes%2Frusty-euler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 07d79658f70957edf02e6eab34749dbee2d46469
[INFO] testing rHermes/rusty-euler against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FrHermes%2Frusty-euler" "/workspace/builds/worker-64/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-64/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rHermes/rusty-euler on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rHermes/rusty-euler
[INFO] finished tweaking git repo https://github.com/rHermes/rusty-euler
[INFO] tweaked toml for git repo https://github.com/rHermes/rusty-euler written to /workspace/builds/worker-64/source/Cargo.toml
[INFO] crate git repo https://github.com/rHermes/rusty-euler already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8dbacb3a05b24006062eecc6e6b044f07270b98ca904e51804ddfc437f0f4a58
[INFO] running `Command { std: "docker" "start" "-a" "8dbacb3a05b24006062eecc6e6b044f07270b98ca904e51804ddfc437f0f4a58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8dbacb3a05b24006062eecc6e6b044f07270b98ca904e51804ddfc437f0f4a58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dbacb3a05b24006062eecc6e6b044f07270b98ca904e51804ddfc437f0f4a58", kill_on_drop: false }`
[INFO] [stdout] 8dbacb3a05b24006062eecc6e6b044f07270b98ca904e51804ddfc437f0f4a58
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c5868f5b09b17c6202440fb554cd832a256a4863ec8f567adadbf238488bf23
[INFO] running `Command { std: "docker" "start" "-a" "9c5868f5b09b17c6202440fb554cd832a256a4863ec8f567adadbf238488bf23", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.33
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling rand v0.3.18
[INFO] [stderr]    Compiling time v0.1.38
[INFO] [stderr]    Compiling num-bigint v0.1.40
[INFO] [stderr]    Compiling num-complex v0.1.40
[INFO] [stderr]    Compiling num-rational v0.1.40
[INFO] [stderr]    Compiling num v0.1.40
[INFO] [stderr]    Compiling chrono v0.4.0
[INFO] [stderr]    Compiling euler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `primes_below`
[INFO] [stdout]  --> src/primes.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn primes_below(n: u64) -> Vec<u64> {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_prime`
[INFO] [stdout]   --> src/primes.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn is_prime(n: u64, primes: &[u64]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `nth_prime`
[INFO] [stdout]   --> src/primes.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn nth_prime(n: usize) -> u64 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 54.37s
[INFO] running `Command { std: "docker" "inspect" "9c5868f5b09b17c6202440fb554cd832a256a4863ec8f567adadbf238488bf23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c5868f5b09b17c6202440fb554cd832a256a4863ec8f567adadbf238488bf23", kill_on_drop: false }`
[INFO] [stdout] 9c5868f5b09b17c6202440fb554cd832a256a4863ec8f567adadbf238488bf23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 359063b3e4faeaa3dcd68965c010f486c5c90d3a10cd2dfe4704420488f3f347
[INFO] running `Command { std: "docker" "start" "-a" "359063b3e4faeaa3dcd68965c010f486c5c90d3a10cd2dfe4704420488f3f347", kill_on_drop: false }`
[INFO] [stderr]    Compiling euler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `primes_below`
[INFO] [stdout]  --> src/primes.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn primes_below(n: u64) -> Vec<u64> {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_prime`
[INFO] [stdout]   --> src/primes.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn is_prime(n: u64, primes: &[u64]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `nth_prime`
[INFO] [stdout]   --> src/primes.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn nth_prime(n: usize) -> u64 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "359063b3e4faeaa3dcd68965c010f486c5c90d3a10cd2dfe4704420488f3f347", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "359063b3e4faeaa3dcd68965c010f486c5c90d3a10cd2dfe4704420488f3f347", kill_on_drop: false }`
[INFO] [stdout] 359063b3e4faeaa3dcd68965c010f486c5c90d3a10cd2dfe4704420488f3f347
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6265b652ce9f420b3e3b5d1b7695fec5cf2968cd12dbf127f3226b78e3121ee1
[INFO] running `Command { std: "docker" "start" "-a" "6265b652ce9f420b3e3b5d1b7695fec5cf2968cd12dbf127f3226b78e3121ee1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: function is never used: `primes_below`
[INFO] [stderr]  --> src/primes.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn primes_below(n: u64) -> Vec<u64> {
[INFO] [stderr]   |        ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_prime`
[INFO] [stderr]   --> src/primes.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub fn is_prime(n: u64, primes: &[u64]) -> bool {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `nth_prime`
[INFO] [stderr]   --> src/primes.rs:30:8
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub fn nth_prime(n: usize) -> u64 {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `euler` (bin "euler" test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.84s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/euler-1fd3117deb9d2c15)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6265b652ce9f420b3e3b5d1b7695fec5cf2968cd12dbf127f3226b78e3121ee1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6265b652ce9f420b3e3b5d1b7695fec5cf2968cd12dbf127f3226b78e3121ee1", kill_on_drop: false }`
[INFO] [stdout] 6265b652ce9f420b3e3b5d1b7695fec5cf2968cd12dbf127f3226b78e3121ee1