[INFO] cloning repository https://github.com/barneyb/rust_playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/barneyb/rust_playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbarneyb%2Frust_playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbarneyb%2Frust_playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9ff637fcacf34ec7e124634a3952c852e1eadf33
[INFO] checking barneyb/rust_playground against try#3a4cb0edb4040379c037e06efeb5409e44be7b77 for pr-146377
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbarneyb%2Frust_playground" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/barneyb/rust_playground
[INFO] finished tweaking git repo https://github.com/barneyb/rust_playground
[INFO] tweaked toml for git repo https://github.com/barneyb/rust_playground written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/barneyb/rust_playground on toolchain 3a4cb0edb4040379c037e06efeb5409e44be7b77
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4cb0edb4040379c037e06efeb5409e44be7b77" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/barneyb/rust_playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4cb0edb4040379c037e06efeb5409e44be7b77" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4cb0edb4040379c037e06efeb5409e44be7b77" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b51b96a1c9c749b7685b72b29e44bbc1fbaeb571f0c10ffba139cfa1fd92db0a
[INFO] running `Command { std: "docker" "start" "-a" "b51b96a1c9c749b7685b72b29e44bbc1fbaeb571f0c10ffba139cfa1fd92db0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b51b96a1c9c749b7685b72b29e44bbc1fbaeb571f0c10ffba139cfa1fd92db0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b51b96a1c9c749b7685b72b29e44bbc1fbaeb571f0c10ffba139cfa1fd92db0a", kill_on_drop: false }`
[INFO] [stdout] b51b96a1c9c749b7685b72b29e44bbc1fbaeb571f0c10ffba139cfa1fd92db0a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4cb0edb4040379c037e06efeb5409e44be7b77" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 839a0984593f03b6d582d7199ca7fa50639545d44260ebb6d259b2da974d7517
[INFO] running `Command { std: "docker" "start" "-a" "839a0984593f03b6d582d7199ca7fa50639545d44260ebb6d259b2da974d7517", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking rust_playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Dir` and `Turn`
[INFO] [stdout]  --> src/aoc_2019_15/mod.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::geom2d::{Dir, Turn};
[INFO] [stdout]   |                     ^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Processor` and `Program`
[INFO] [stdout]  --> src/aoc_2019_15/mod.rs:5:22
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::intcode::{Processor, Program};
[INFO] [stdout]   |                      ^^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BW::*` and `BW`
[INFO] [stdout]  --> src/aoc_2019_15/mod.rs:6:27
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::plane::{Plane, BW, BW::*, ToChar};
[INFO] [stdout]   |                           ^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Dir` and `Turn`
[INFO] [stdout]  --> src/aoc_2019_15/mod.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::geom2d::{Dir, Turn};
[INFO] [stdout]   |                     ^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Processor` and `Program`
[INFO] [stdout]  --> src/aoc_2019_15/mod.rs:5:22
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::intcode::{Processor, Program};
[INFO] [stdout]   |                      ^^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BW::*` and `BW`
[INFO] [stdout]  --> src/aoc_2019_15/mod.rs:6:27
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::plane::{Plane, BW, BW::*, ToChar};
[INFO] [stdout]   |                           ^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/aoc_2019_15/mod.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let mut pos = Point::origin();
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `prog`
[INFO] [stdout]   --> src/aoc_2019_15/mod.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let prog = intcode::read_from_file(filename);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_prog`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `settings` is never read
[INFO] [stdout]   --> src/aoc_2019_07/mod.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct OptimalPhaseSettings {
[INFO] [stdout]    |        -------------------- field in this struct
[INFO] [stdout] 33 |     settings: PhaseSettings,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `OptimalPhaseSettings` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Wall` and `Visited` are never constructed
[INFO] [stdout]   --> src/aoc_2019_15/mod.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | enum Markers {
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 11 |     Wall,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 12 |     Visited,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/aoc_2019_08/mod.rs:77:22
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn get_layer(&self, i: usize) -> Layer {
[INFO] [stdout]    |                      ^^^^^               ^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn get_layer(&self, i: usize) -> Layer<'_> {
[INFO] [stdout]    |                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/aoc_2019_08/mod.rs:86:19
[INFO] [stdout]    |
[INFO] [stdout] 86 |     pub fn layers(&self) -> Layers {
[INFO] [stdout]    |                   ^^^^^     ^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 86 |     pub fn layers(&self) -> Layers<'_> {
[INFO] [stdout]    |                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/aoc_2019_15/mod.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let mut pos = Point::origin();
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `prog`
[INFO] [stdout]   --> src/aoc_2019_15/mod.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let prog = intcode::read_from_file(filename);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_prog`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Wall` and `Visited` are never constructed
[INFO] [stdout]   --> src/aoc_2019_15/mod.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | enum Markers {
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 11 |     Wall,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 12 |     Visited,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/aoc_2019_08/mod.rs:77:22
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn get_layer(&self, i: usize) -> Layer {
[INFO] [stdout]    |                      ^^^^^               ^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn get_layer(&self, i: usize) -> Layer<'_> {
[INFO] [stdout]    |                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/aoc_2019_08/mod.rs:86:19
[INFO] [stdout]    |
[INFO] [stdout] 86 |     pub fn layers(&self) -> Layers {
[INFO] [stdout]    |                   ^^^^^     ^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 86 |     pub fn layers(&self) -> Layers<'_> {
[INFO] [stdout]    |                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.74s
[INFO] running `Command { std: "docker" "inspect" "839a0984593f03b6d582d7199ca7fa50639545d44260ebb6d259b2da974d7517", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "839a0984593f03b6d582d7199ca7fa50639545d44260ebb6d259b2da974d7517", kill_on_drop: false }`
[INFO] [stdout] 839a0984593f03b6d582d7199ca7fa50639545d44260ebb6d259b2da974d7517
