[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 try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fijks%2Fpiet-rs" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ijks/piet-rs on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-10/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" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cc v1.0.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9e39c27452c039160709804b03ce68ce0a8c0f25eb911090b39e1ae2bf6685d7
[INFO] running `Command { std: "docker" "start" "-a" "9e39c27452c039160709804b03ce68ce0a8c0f25eb911090b39e1ae2bf6685d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e39c27452c039160709804b03ce68ce0a8c0f25eb911090b39e1ae2bf6685d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e39c27452c039160709804b03ce68ce0a8c0f25eb911090b39e1ae2bf6685d7", kill_on_drop: false }`
[INFO] [stdout] 9e39c27452c039160709804b03ce68ce0a8c0f25eb911090b39e1ae2bf6685d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9293a6176444d727ba4ec9d4def3aba83553c9a8858f457dc7bf52e309cc161b
[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" "9293a6176444d727ba4ec9d4def3aba83553c9a8858f457dc7bf52e309cc161b", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling const_fn v0.4.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling syn v1.0.51
[INFO] [stderr]    Compiling cc v1.0.2
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]     Checking bitflags v1.0.0
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]     Checking weezl v0.1.3
[INFO] [stderr]     Checking vec_map v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
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[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking gif v0.11.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
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[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling memoffset v0.6.1
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[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.3.2
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[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking atty v0.2.3
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[INFO] [stderr]    Compiling structopt-derive v0.4.13
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[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]     Checking structopt v0.3.20
[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: 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: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `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 `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 50.24s
[INFO] running `Command { std: "docker" "inspect" "9293a6176444d727ba4ec9d4def3aba83553c9a8858f457dc7bf52e309cc161b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9293a6176444d727ba4ec9d4def3aba83553c9a8858f457dc7bf52e309cc161b", kill_on_drop: false }`
[INFO] [stdout] 9293a6176444d727ba4ec9d4def3aba83553c9a8858f457dc7bf52e309cc161b