[INFO] updating cached repository colemickens/euler-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/colemickens/euler-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/colemickens/euler-rust" "work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/colemickens/euler-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/colemickens/euler-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/colemickens/euler-rust" "work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/colemickens/euler-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/colemickens/euler-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 441b787ba2e0e5564f582f883e355782ece155e4
[INFO] sha for GitHub repo colemickens/euler-rust: 441b787ba2e0e5564f582f883e355782ece155e4
[INFO] validating manifest of colemickens/euler-rust on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of colemickens/euler-rust on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing colemickens/euler-rust
[INFO] finished frobbing colemickens/euler-rust
[INFO] frobbed toml for colemickens/euler-rust written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/colemickens/euler-rust/Cargo.toml
[INFO] started frobbing colemickens/euler-rust
[INFO] finished frobbing colemickens/euler-rust
[INFO] frobbed toml for colemickens/euler-rust written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/colemickens/euler-rust/Cargo.toml
[INFO] crate colemickens/euler-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/colemickens/euler-rust/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking colemickens/euler-rust against master#e305df1846a6d985315917ae0c81b74af8b4e641 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-3/master#e305df1846a6d985315917ae0c81b74af8b4e641:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/colemickens/euler-rust:/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" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 83d278143eb1225445cbbe3b1d46ecca0d09e0c0e2d75e59854f422013a8c33f
[INFO] running `"docker" "start" "-a" "83d278143eb1225445cbbe3b1d46ecca0d09e0c0e2d75e59854f422013a8c33f"`
[INFO] [stderr]     Checking colemickens-euler-rust v0.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: type alias is never used: `Output`
[INFO] [stderr]  --> src/primes.rs:7:3
[INFO] [stderr]   |
[INFO] [stderr] 7 |   type Output = BigInt;
[INFO] [stderr]   |   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Output`
[INFO] [stderr]  --> src/primes.rs:7:3
[INFO] [stderr]   |
[INFO] [stderr] 7 |   type Output = BigInt;
[INFO] [stderr]   |   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `iter_arith` has been stable since 1.11.0 and no longer requires an attribute to enable
[INFO] [stderr]   --> tests/problem008.rs:32:12
[INFO] [stderr]    |
[INFO] [stderr] 32 | #![feature(iter_arith)]
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(stable_features)] on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0635]: unknown feature `convert`
[INFO] [stderr]   --> tests/problem008.rs:31:12
[INFO] [stderr]    |
[INFO] [stderr] 31 | #![feature(convert)]
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0635`.
[INFO] [stderr] error: Could not compile `colemickens-euler-rust`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> tests/problem009.rs:18:12
[INFO] [stderr]    |
[INFO] [stderr] 18 |   for a in (0u64..target) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> tests/problem009.rs:19:14
[INFO] [stderr]    |
[INFO] [stderr] 19 |     for b in (0u64..a) {
[INFO] [stderr]    |              ^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `iter_arith` has been stable since 1.11.0 and no longer requires an attribute to enable
[INFO] [stderr]   --> tests/problem006.rs:15:12
[INFO] [stderr]    |
[INFO] [stderr] 15 | #![feature(iter_arith)]
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(stable_features)] on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0593]: closure is expected to take 2 arguments, but it takes 1 argument
[INFO] [stderr]   --> tests/problem003.rs:19:20
[INFO] [stderr]    |
[INFO] [stderr] 19 |   *(factors.iter().max_by(|&x| x).unwrap())
[INFO] [stderr]    |                    ^^^^^^ ---- takes 1 argument
[INFO] [stderr]    |                    |
[INFO] [stderr]    |                    expected closure that takes 2 arguments
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0593`.
[INFO] [stderr] error: Could not compile `colemickens-euler-rust`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused import: `std::num`
[INFO] [stderr]   --> tests/problem005.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::num;
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> tests/problem005.rs:41:12
[INFO] [stderr]    |
[INFO] [stderr] 41 |   for n in (lower_limit..upper_limit) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `iter_arith` has been stable since 1.11.0 and no longer requires an attribute to enable
[INFO] [stderr]   --> tests/problem012.rs:42:12
[INFO] [stderr]    |
[INFO] [stderr] 42 | #![feature(iter_arith)]
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(stable_features)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "83d278143eb1225445cbbe3b1d46ecca0d09e0c0e2d75e59854f422013a8c33f"`
[INFO] running `"docker" "rm" "-f" "83d278143eb1225445cbbe3b1d46ecca0d09e0c0e2d75e59854f422013a8c33f"`
[INFO] [stdout] 83d278143eb1225445cbbe3b1d46ecca0d09e0c0e2d75e59854f422013a8c33f