[INFO] updating cached repository cleech/adventofcode2016
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/cleech/adventofcode2016
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/cleech/adventofcode2016" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/cleech/adventofcode2016"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/cleech/adventofcode2016'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/cleech/adventofcode2016" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/cleech/adventofcode2016"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/cleech/adventofcode2016'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] caab75d8a62b0f0fc1b33a91b81d1d045917d237
[INFO] sha for GitHub repo cleech/adventofcode2016: caab75d8a62b0f0fc1b33a91b81d1d045917d237
[INFO] validating manifest of cleech/adventofcode2016 on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of cleech/adventofcode2016 on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing cleech/adventofcode2016
[INFO] finished frobbing cleech/adventofcode2016
[INFO] frobbed toml for cleech/adventofcode2016 written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/cleech/adventofcode2016/Cargo.toml
[INFO] started frobbing cleech/adventofcode2016
[INFO] finished frobbing cleech/adventofcode2016
[INFO] frobbed toml for cleech/adventofcode2016 written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/cleech/adventofcode2016/Cargo.toml
[INFO] crate cleech/adventofcode2016 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking cleech/adventofcode2016 against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-3/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/cleech/adventofcode2016:/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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c51dd7736c79562998f4d37804bdf3109ab0189fe8ef6a2ca4157afa6c26813f
[INFO] running `"docker" "start" "-a" "c51dd7736c79562998f4d37804bdf3109ab0189fe8ef6a2ca4157afa6c26813f"`
[INFO] [stderr]     Checking scan_fmt v0.1.1
[INFO] [stderr]     Checking nom v2.0.1
[INFO] [stderr]     Checking num_cpus v1.2.1
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking itertools v0.5.8
[INFO] [stderr]     Checking clap v2.19.3
[INFO] [stderr]     Checking num v0.1.36
[INFO] [stderr]     Checking nalgebra v0.10.1
[INFO] [stderr]     Checking adventofcode2016 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0635]: unknown feature `step_by`
[INFO] [stderr]  --> src/bin/day15.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(step_by)]
[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 `adventofcode2016`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> src/bin/day19.rs:23:37
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let mut q = VecDeque::from_iter((1..count+1));
[INFO] [stderr]    |                                     ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `to`
[INFO] [stderr]    --> src/bin/day22.rs:131:41
[INFO] [stderr]     |
[INFO] [stderr] 131 |     fn move_gap(&mut self, from: Coord, to: Coord) -> Result<usize, ()> {
[INFO] [stderr]     |                                         ^^ help: consider prefixing with an underscore: `_to`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/bin/day05.rs:100:17
[INFO] [stderr]     |
[INFO] [stderr] 100 |             b'0'...b'9' => Some(*self - b'0'),
[INFO] [stderr]     |                 ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/bin/day05.rs:101:17
[INFO] [stderr]     |
[INFO] [stderr] 101 |             b'a'...b'f' => Some(*self - b'a' + 10),
[INFO] [stderr]     |                 ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/bin/day05.rs:112:33
[INFO] [stderr]     |
[INFO] [stderr] 112 |     *start = (*start..).step_by(stride)
[INFO] [stderr]     |                                 ^^^^^^ expected usize, found u32
[INFO] [stderr] help: you can convert an `u32` to `usize` and panic if the converted value wouldn't fit
[INFO] [stderr]     |
[INFO] [stderr] 112 |     *start = (*start..).step_by(stride.try_into().unwrap())
[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 E0308`.
[INFO] [stderr] error: Could not compile `adventofcode2016`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "c51dd7736c79562998f4d37804bdf3109ab0189fe8ef6a2ca4157afa6c26813f"`
[INFO] running `"docker" "rm" "-f" "c51dd7736c79562998f4d37804bdf3109ab0189fe8ef6a2ca4157afa6c26813f"`
[INFO] [stdout] c51dd7736c79562998f4d37804bdf3109ab0189fe8ef6a2ca4157afa6c26813f