[INFO] updating cached repository rHermes/rusty-euler
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/rHermes/rusty-euler
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/rHermes/rusty-euler" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/rHermes/rusty-euler"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/rHermes/rusty-euler'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rHermes/rusty-euler" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/rHermes/rusty-euler"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/rHermes/rusty-euler'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 07d79658f70957edf02e6eab34749dbee2d46469
[INFO] sha for GitHub repo rHermes/rusty-euler: 07d79658f70957edf02e6eab34749dbee2d46469
[INFO] validating manifest of rHermes/rusty-euler on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rHermes/rusty-euler on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rHermes/rusty-euler
[INFO] finished frobbing rHermes/rusty-euler
[INFO] frobbed toml for rHermes/rusty-euler written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/rHermes/rusty-euler/Cargo.toml
[INFO] started frobbing rHermes/rusty-euler
[INFO] finished frobbing rHermes/rusty-euler
[INFO] frobbed toml for rHermes/rusty-euler written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/rHermes/rusty-euler/Cargo.toml
[INFO] crate rHermes/rusty-euler already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking rHermes/rusty-euler against master#60960a260f7b5c695fd0717311d72ce62dd4eb43 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-3/master#60960a260f7b5c695fd0717311d72ce62dd4eb43:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/rHermes/rusty-euler:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e0317a5e8cb3cd5bb18bc3e8805c90d6b74f492ff0f0ca38e20ffb052de7e26c
[INFO] running `"docker" "start" "-a" "e0317a5e8cb3cd5bb18bc3e8805c90d6b74f492ff0f0ca38e20ffb052de7e26c"`
[INFO] [stderr]     Checking chrono v0.4.0
[INFO] [stderr]     Checking euler v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `primes_below`
[INFO] [stderr]  --> src/primes.rs:1:1
[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:17:1
[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:30:1
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub fn nth_prime(n: usize) -> u64 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `primes_below`
[INFO] [stderr]  --> src/primes.rs:1:1
[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:17:1
[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:30:1
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub fn nth_prime(n: usize) -> u64 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.40s
[INFO] running `"docker" "inspect" "e0317a5e8cb3cd5bb18bc3e8805c90d6b74f492ff0f0ca38e20ffb052de7e26c"`
[INFO] running `"docker" "rm" "-f" "e0317a5e8cb3cd5bb18bc3e8805c90d6b74f492ff0f0ca38e20ffb052de7e26c"`
[INFO] [stdout] e0317a5e8cb3cd5bb18bc3e8805c90d6b74f492ff0f0ca38e20ffb052de7e26c