[INFO] updating cached repository https://github.com/ijks/piet-rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c9f85558145516a0b07976ce5a5ad135e26a5003
[INFO] checking ijks/piet-rs against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fijks%2Fpiet-rs" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ijks/piet-rs on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ijks/piet-rs
[INFO] finished tweaking git repo https://github.com/ijks/piet-rs
[INFO] tweaked toml for git repo https://github.com/ijks/piet-rs written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/ijks/piet-rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e5c7fd15c4de807c7871088f764cdac567d951efe0f4680d15c867354b31ba8d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "e5c7fd15c4de807c7871088f764cdac567d951efe0f4680d15c867354b31ba8d"`
[INFO] [stderr]     Checking num-traits v0.1.40
[INFO] [stderr]    Compiling cc v1.0.2
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking byteorder v1.1.0
[INFO] [stderr]     Checking futures v0.1.16
[INFO] [stderr]     Checking lazy_static v0.2.9
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking vec_map v0.8.0
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking num_cpus v1.7.0
[INFO] [stderr]     Checking term_size v0.3.0
[INFO] [stderr]     Checking atty v0.2.3
[INFO] [stderr]     Checking inflate v0.3.3
[INFO] [stderr]     Checking coco v0.1.1
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]     Checking deflate v0.7.17
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking textwrap v0.8.0
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking clap v2.26.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]     Checking rayon v0.8.2
[INFO] [stderr]     Checking png v0.11.0
[INFO] [stderr]     Checking num-bigint v0.1.40
[INFO] [stderr]     Checking num-complex v0.1.40
[INFO] [stderr]     Checking jpeg-decoder v0.1.13
[INFO] [stderr]     Checking num-rational v0.1.39
[INFO] [stderr]     Checking num v0.1.40
[INFO] [stderr]     Checking image v0.17.0
[INFO] [stderr]     Checking backtrace v0.3.3
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]     Checking piet v0.1.0 (/opt/rustwide/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: if this is intentional, prefix it 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: if this is intentional, prefix it 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: if this is intentional, prefix it 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:101:12
[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:104:12
[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: 19 warnings emitted
[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: if this is intentional, prefix it 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: if this is intentional, prefix it 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: if this is intentional, prefix it 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:101:12
[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:104:12
[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: 18 warnings emitted
[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: if this is intentional, prefix it 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: if this is intentional, prefix it 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] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.77s
[INFO] running `"docker" "inspect" "e5c7fd15c4de807c7871088f764cdac567d951efe0f4680d15c867354b31ba8d"`
[INFO] running `"docker" "rm" "-f" "e5c7fd15c4de807c7871088f764cdac567d951efe0f4680d15c867354b31ba8d"`
[INFO] [stdout] e5c7fd15c4de807c7871088f764cdac567d951efe0f4680d15c867354b31ba8d