[INFO] cloning repository https://github.com/ijks/piet-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ijks/piet-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fijks%2Fpiet-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fijks%2Fpiet-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fb75b4f4104d246adf0bac2396f275f4422d1eeb
[INFO] checking ijks/piet-rs against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fijks%2Fpiet-rs" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ijks/piet-rs on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-0/source/Cargo.toml
[INFO] crate git repo https://github.com/ijks/piet-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 081ad8b823c70cc01bdb5c9e6d8e3c97575092e162883cd64be9ee9d27f62600
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "081ad8b823c70cc01bdb5c9e6d8e3c97575092e162883cd64be9ee9d27f62600", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "081ad8b823c70cc01bdb5c9e6d8e3c97575092e162883cd64be9ee9d27f62600", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "081ad8b823c70cc01bdb5c9e6d8e3c97575092e162883cd64be9ee9d27f62600", kill_on_drop: false }`
[INFO] [stdout] 081ad8b823c70cc01bdb5c9e6d8e3c97575092e162883cd64be9ee9d27f62600
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 823ea5750a52227e1996caea673c242e63cbaf933d8aa487e940cb9ae70d7169
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "823ea5750a52227e1996caea673c242e63cbaf933d8aa487e940cb9ae70d7169", kill_on_drop: false }`
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling syn v1.0.51
[INFO] [stderr]    Compiling cc v1.0.2
[INFO] [stderr]     Checking bitflags v1.0.0
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]     Checking rustc-demangle v0.1.5
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking crc32fast v1.2.1
[INFO] [stderr]     Checking atty v0.2.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]     Checking crossbeam-epoch v0.9.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking png v0.16.7
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking jpeg-decoder v0.1.20
[INFO] [stderr]     Checking tiff v0.6.0
[INFO] [stderr]     Checking image v0.23.12
[INFO] [stderr]    Compiling structopt-derive v0.4.13
[INFO] [stderr]     Checking structopt v0.3.20
[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] [stdout] warning: variant is never constructed: `Up`
[INFO] [stdout]   --> src/interpreter.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Up,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Down`
[INFO] [stdout]   --> src/interpreter.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     Down,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Left`
[INFO] [stdout]   --> src/interpreter.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Left,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rotate_clockwise`
[INFO] [stdout]   --> src/interpreter.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn rotate_clockwise(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rotate_counterclockwise`
[INFO] [stdout]   --> src/interpreter.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn rotate_counterclockwise(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Right`
[INFO] [stdout]   --> src/interpreter.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     Right,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `switch`
[INFO] [stdout]   --> src/interpreter.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn switch(&mut self) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `current_block`
[INFO] [stdout]   --> src/interpreter.rs:90:8
[INFO] [stdout]    |
[INFO] [stdout] 90 |     fn current_block(&self) -> HashSet<Coords> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next_coords`
[INFO] [stdout]   --> src/interpreter.rs:94:8
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn next_coords(&self) -> Coords {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `x_key`
[INFO] [stdout]   --> src/interpreter.rs:98:12
[INFO] [stdout]    |
[INFO] [stdout] 98 |         fn x_key(&(x, _): &Coords) -> usize {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `y_key`
[INFO] [stdout]    --> src/interpreter.rs:101:12
[INFO] [stdout]     |
[INFO] [stdout] 101 |         fn y_key(&(_, y): &Coords) -> usize {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `execute_command`
[INFO] [stdout]    --> src/interpreter.rs:163:8
[INFO] [stdout]     |
[INFO] [stdout] 163 |     fn execute_command(&mut self, command: &Command) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pointer`
[INFO] [stdout]    --> src/interpreter.rs:247:8
[INFO] [stdout]     |
[INFO] [stdout] 247 |     fn pointer(&mut self, steps: i64) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `switch`
[INFO] [stdout]    --> src/interpreter.rs:259:8
[INFO] [stdout]     |
[INFO] [stdout] 259 |     fn switch(&mut self, times: i64) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `index_to_coords`
[INFO] [stdout]   --> src/program.rs:85:8
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn index_to_coords(&self, index: usize) -> Option<Coords> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Up`
[INFO] [stdout]   --> src/interpreter.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Up,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Down`
[INFO] [stdout]   --> src/interpreter.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     Down,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Left`
[INFO] [stdout]   --> src/interpreter.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Left,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rotate_clockwise`
[INFO] [stdout]   --> src/interpreter.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn rotate_clockwise(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rotate_counterclockwise`
[INFO] [stdout]   --> src/interpreter.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn rotate_counterclockwise(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Right`
[INFO] [stdout]   --> src/interpreter.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     Right,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `switch`
[INFO] [stdout]   --> src/interpreter.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn switch(&mut self) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `current_block`
[INFO] [stdout]   --> src/interpreter.rs:90:8
[INFO] [stdout]    |
[INFO] [stdout] 90 |     fn current_block(&self) -> HashSet<Coords> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next_coords`
[INFO] [stdout]   --> src/interpreter.rs:94:8
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn next_coords(&self) -> Coords {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `x_key`
[INFO] [stdout]   --> src/interpreter.rs:98:12
[INFO] [stdout]    |
[INFO] [stdout] 98 |         fn x_key(&(x, _): &Coords) -> usize {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `y_key`
[INFO] [stdout]    --> src/interpreter.rs:101:12
[INFO] [stdout]     |
[INFO] [stdout] 101 |         fn y_key(&(_, y): &Coords) -> usize {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `execute_command`
[INFO] [stdout]    --> src/interpreter.rs:163:8
[INFO] [stdout]     |
[INFO] [stdout] 163 |     fn execute_command(&mut self, command: &Command) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pointer`
[INFO] [stdout]    --> src/interpreter.rs:247:8
[INFO] [stdout]     |
[INFO] [stdout] 247 |     fn pointer(&mut self, steps: i64) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `switch`
[INFO] [stdout]    --> src/interpreter.rs:259:8
[INFO] [stdout]     |
[INFO] [stdout] 259 |     fn switch(&mut self, times: i64) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     interpreter.run();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     interpreter.run();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.00s
[INFO] running `Command { std: "docker" "inspect" "823ea5750a52227e1996caea673c242e63cbaf933d8aa487e940cb9ae70d7169", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "823ea5750a52227e1996caea673c242e63cbaf933d8aa487e940cb9ae70d7169", kill_on_drop: false }`
[INFO] [stdout] 823ea5750a52227e1996caea673c242e63cbaf933d8aa487e940cb9ae70d7169