[INFO] updating cached repository ijks/piet-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ijks/piet-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ijks/piet-rs" "work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/ijks/piet-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/ijks/piet-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ijks/piet-rs" "work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/ijks/piet-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/ijks/piet-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c9f85558145516a0b07976ce5a5ad135e26a5003
[INFO] sha for GitHub repo ijks/piet-rs: c9f85558145516a0b07976ce5a5ad135e26a5003
[INFO] validating manifest of ijks/piet-rs on toolchain master#a850a426491e14186af2250549bf41256b5938d2
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ijks/piet-rs on toolchain try#06a150c7d11500b41499224f165e9de1de096768
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ijks/piet-rs
[INFO] finished frobbing ijks/piet-rs
[INFO] frobbed toml for ijks/piet-rs written to work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/ijks/piet-rs/Cargo.toml
[INFO] started frobbing ijks/piet-rs
[INFO] finished frobbing ijks/piet-rs
[INFO] frobbed toml for ijks/piet-rs written to work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/ijks/piet-rs/Cargo.toml
[INFO] crate ijks/piet-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on the registry index
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ijks/piet-rs against master#a850a426491e14186af2250549bf41256b5938d2 for pr-60162
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60162/worker-3/master#a850a426491e14186af2250549bf41256b5938d2:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/ijks/piet-rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+a850a426491e14186af2250549bf41256b5938d2-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 65b94c42c8fc12c2b9045e35435df426a22efb6c1c40d6d013b1ba9c8632c69d
[INFO] running `"docker" "start" "-a" "65b94c42c8fc12c2b9045e35435df426a22efb6c1c40d6d013b1ba9c8632c69d"`
[INFO] [stderr]     Checking bitflags v1.0.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]     Checking num-bigint v0.1.40
[INFO] [stderr]     Checking png v0.11.0
[INFO] [stderr]     Checking num-rational v0.1.39
[INFO] [stderr]     Checking image v0.17.0
[INFO] [stderr]     Checking num v0.1.40
[INFO] [stderr]     Checking backtrace v0.3.3
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]     Checking piet v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::cmp::Ordering`
[INFO] [stderr]  --> src/interpreter.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::cmp::Ordering;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp::Ordering`
[INFO] [stderr]  --> src/interpreter.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::cmp::Ordering;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/interpreter.rs:120:29
[INFO] [stderr]     |
[INFO] [stderr] 120 |                 .filter(|&&(x, y)| y == farthest_y)
[INFO] [stderr]     |                             ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/interpreter.rs:133:32
[INFO] [stderr]     |
[INFO] [stderr] 133 |                 .filter(|&&(x, y)| x == farthest_x)
[INFO] [stderr]     |                                ^ help: consider prefixing with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `height`
[INFO] [stderr]   --> src/program.rs:78:21
[INFO] [stderr]    |
[INFO] [stderr] 78 |         let (width, height) = self.size;
[INFO] [stderr]    |                     ^^^^^^ help: consider prefixing with an underscore: `_height`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Up`
[INFO] [stderr]   --> src/interpreter.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Up,
[INFO] [stderr]    |     ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Down`
[INFO] [stderr]   --> src/interpreter.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     Down,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Left`
[INFO] [stderr]   --> src/interpreter.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     Left,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_clockwise`
[INFO] [stderr]   --> src/interpreter.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn rotate_clockwise(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_counterclockwise`
[INFO] [stderr]   --> src/interpreter.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub fn rotate_counterclockwise(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Right`
[INFO] [stderr]   --> src/interpreter.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     Right,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `switch`
[INFO] [stderr]   --> src/interpreter.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     pub fn switch(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `current_block`
[INFO] [stderr]   --> src/interpreter.rs:93:5
[INFO] [stderr]    |
[INFO] [stderr] 93 |     fn current_block(&self) -> HashSet<Coords> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `next_coords`
[INFO] [stderr]   --> src/interpreter.rs:97:5
[INFO] [stderr]    |
[INFO] [stderr] 97 |     fn next_coords(&self) -> Coords {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `x_key`
[INFO] [stderr]    --> src/interpreter.rs:101:9
[INFO] [stderr]     |
[INFO] [stderr] 101 |         fn x_key(&(x, _): &Coords) -> usize {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `y_key`
[INFO] [stderr]    --> src/interpreter.rs:104:9
[INFO] [stderr]     |
[INFO] [stderr] 104 |         fn y_key(&(_, y): &Coords) -> usize {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `execute_command`
[INFO] [stderr]    --> src/interpreter.rs:167:5
[INFO] [stderr]     |
[INFO] [stderr] 167 |     fn execute_command(&mut self, command: &Command) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `pointer`
[INFO] [stderr]    --> src/interpreter.rs:261:5
[INFO] [stderr]     |
[INFO] [stderr] 261 |     fn pointer(&mut self, steps: i64) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `switch`
[INFO] [stderr]    --> src/interpreter.rs:273:5
[INFO] [stderr]     |
[INFO] [stderr] 273 |     fn switch(&mut self, times: i64) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `index_to_coords`
[INFO] [stderr]   --> src/program.rs:83:5
[INFO] [stderr]    |
[INFO] [stderr] 83 |     fn index_to_coords(&self, index: usize) -> Option<Coords> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/interpreter.rs:120:29
[INFO] [stderr]     |
[INFO] [stderr] 120 |                 .filter(|&&(x, y)| y == farthest_y)
[INFO] [stderr]     |                             ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/interpreter.rs:133:32
[INFO] [stderr]     |
[INFO] [stderr] 133 |                 .filter(|&&(x, y)| x == farthest_x)
[INFO] [stderr]     |                                ^ help: consider prefixing with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `height`
[INFO] [stderr]   --> src/program.rs:78:21
[INFO] [stderr]    |
[INFO] [stderr] 78 |         let (width, height) = self.size;
[INFO] [stderr]    |                     ^^^^^^ help: consider prefixing with an underscore: `_height`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Up`
[INFO] [stderr]   --> src/interpreter.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Up,
[INFO] [stderr]    |     ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Down`
[INFO] [stderr]   --> src/interpreter.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     Down,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Left`
[INFO] [stderr]   --> src/interpreter.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     Left,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_clockwise`
[INFO] [stderr]   --> src/interpreter.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn rotate_clockwise(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rotate_counterclockwise`
[INFO] [stderr]   --> src/interpreter.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub fn rotate_counterclockwise(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Right`
[INFO] [stderr]   --> src/interpreter.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     Right,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `switch`
[INFO] [stderr]   --> src/interpreter.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     pub fn switch(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `current_block`
[INFO] [stderr]   --> src/interpreter.rs:93:5
[INFO] [stderr]    |
[INFO] [stderr] 93 |     fn current_block(&self) -> HashSet<Coords> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `next_coords`
[INFO] [stderr]   --> src/interpreter.rs:97:5
[INFO] [stderr]    |
[INFO] [stderr] 97 |     fn next_coords(&self) -> Coords {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `x_key`
[INFO] [stderr]    --> src/interpreter.rs:101:9
[INFO] [stderr]     |
[INFO] [stderr] 101 |         fn x_key(&(x, _): &Coords) -> usize {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `y_key`
[INFO] [stderr]    --> src/interpreter.rs:104:9
[INFO] [stderr]     |
[INFO] [stderr] 104 |         fn y_key(&(_, y): &Coords) -> usize {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `execute_command`
[INFO] [stderr]    --> src/interpreter.rs:167:5
[INFO] [stderr]     |
[INFO] [stderr] 167 |     fn execute_command(&mut self, command: &Command) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `pointer`
[INFO] [stderr]    --> src/interpreter.rs:261:5
[INFO] [stderr]     |
[INFO] [stderr] 261 |     fn pointer(&mut self, steps: i64) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `switch`
[INFO] [stderr]    --> src/interpreter.rs:273:5
[INFO] [stderr]     |
[INFO] [stderr] 273 |     fn switch(&mut self, times: i64) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `codel_size`
[INFO] [stderr]   --> src/main.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let codel_size = matches.value_of("codel_size").map(|_| unimplemented!());
[INFO] [stderr]    |         ^^^^^^^^^^ help: consider prefixing with an underscore: `_codel_size`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `codel_size`
[INFO] [stderr]   --> src/main.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let codel_size = matches.value_of("codel_size").map(|_| unimplemented!());
[INFO] [stderr]    |         ^^^^^^^^^^ help: consider prefixing with an underscore: `_codel_size`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     interpreter.run();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     interpreter.run();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.04s
[INFO] running `"docker" "inspect" "65b94c42c8fc12c2b9045e35435df426a22efb6c1c40d6d013b1ba9c8632c69d"`
[INFO] running `"docker" "rm" "-f" "65b94c42c8fc12c2b9045e35435df426a22efb6c1c40d6d013b1ba9c8632c69d"`
[INFO] [stdout] 65b94c42c8fc12c2b9045e35435df426a22efb6c1c40d6d013b1ba9c8632c69d