[INFO] cloning repository https://github.com/bcliden/PngCushion
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bcliden/PngCushion" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbcliden%2FPngCushion", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbcliden%2FPngCushion'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4e1e6a729944c6fb43aeed0d89a401e62c505c1d
[INFO] building bcliden/PngCushion against try#c38f3f86763ea281f7c555c13ef11baad4a4fff4 for pr-111698
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbcliden%2FPngCushion" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bcliden/PngCushion on toolchain c38f3f86763ea281f7c555c13ef11baad4a4fff4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c38f3f86763ea281f7c555c13ef11baad4a4fff4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bcliden/PngCushion
[INFO] finished tweaking git repo https://github.com/bcliden/PngCushion
[INFO] tweaked toml for git repo https://github.com/bcliden/PngCushion written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/bcliden/PngCushion 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" "+c38f3f86763ea281f7c555c13ef11baad4a4fff4" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+c38f3f86763ea281f7c555c13ef11baad4a4fff4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dc207c4d03619f66658f72dbb8490456ede4d4e561339842bb8a43e0d20ded30
[INFO] running `Command { std: "docker" "start" "-a" "dc207c4d03619f66658f72dbb8490456ede4d4e561339842bb8a43e0d20ded30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc207c4d03619f66658f72dbb8490456ede4d4e561339842bb8a43e0d20ded30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc207c4d03619f66658f72dbb8490456ede4d4e561339842bb8a43e0d20ded30", kill_on_drop: false }`
[INFO] [stdout] dc207c4d03619f66658f72dbb8490456ede4d4e561339842bb8a43e0d20ded30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+c38f3f86763ea281f7c555c13ef11baad4a4fff4" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fc7897248d29ac36516c7ca6b143a36153bf7834dc873d0703c44a02c1bfae6d
[INFO] running `Command { std: "docker" "start" "-a" "fc7897248d29ac36516c7ca6b143a36153bf7834dc873d0703c44a02c1bfae6d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling os_str_bytes v6.0.1
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling textwrap v0.15.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling clap_lex v0.2.0
[INFO] [stderr]    Compiling indexmap v1.8.1
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling crc-catalog v2.1.0
[INFO] [stderr]    Compiling crc v3.0.0
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap_derive v3.1.18
[INFO] [stderr]    Compiling clap v3.1.18
[INFO] [stderr]    Compiling png-cushion v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `get_fifth_bit` is never used
[INFO] [stdout]  --> src/chunk_type.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn get_fifth_bit(byte: u8) -> u8 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_valid`, `is_critical`, `is_public`, `is_reserved_bit_valid`, and `is_safe_to_copy` are never used
[INFO] [stdout]   --> src/chunk_type.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl ChunkType {
[INFO] [stdout]    | -------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn is_valid(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     pub fn is_critical(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn is_public(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     pub fn is_reserved_bit_valid(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     pub fn is_safe_to_copy(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `from_chunks`, `header`, and `chunks` are never used
[INFO] [stdout]   --> src/png.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl Png {
[INFO] [stdout]    | -------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 12 |     pub fn from_chunks(chunks: Vec<Chunk>) -> Png {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn header(&self) -> &[u8; 8] {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn chunks(&self) -> &[Chunk] {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `valid_PNG_bytes` should have a snake case name
[INFO] [stdout]  --> src/chunk_type.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn valid_PNG_bytes(bytes: [u8; 4]) -> bool {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `valid_png_bytes`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.56s
[INFO] running `Command { std: "docker" "inspect" "fc7897248d29ac36516c7ca6b143a36153bf7834dc873d0703c44a02c1bfae6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc7897248d29ac36516c7ca6b143a36153bf7834dc873d0703c44a02c1bfae6d", kill_on_drop: false }`
[INFO] [stdout] fc7897248d29ac36516c7ca6b143a36153bf7834dc873d0703c44a02c1bfae6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+c38f3f86763ea281f7c555c13ef11baad4a4fff4" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] af5886043b0e7d7bb0bcfde0f83363629f71da4fdf930db6fe212e3b3c3f4739
[INFO] running `Command { std: "docker" "start" "-a" "af5886043b0e7d7bb0bcfde0f83363629f71da4fdf930db6fe212e3b3c3f4739", kill_on_drop: false }`
[INFO] [stderr]    Compiling png-cushion v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `FromStr` is imported redundantly
[INFO] [stdout]    --> src/png.rs:118:13
[INFO] [stdout]     |
[INFO] [stdout] 100 |     use std::str::FromStr;
[INFO] [stdout]     |         ----------------- the item `FromStr` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 118 |         use std::str::FromStr;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]    --> src/png.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |     use std::str::FromStr;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `header` is never used
[INFO] [stdout]   --> src/png.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl Png {
[INFO] [stdout]    | -------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn header(&self) -> &[u8; 8] {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `valid_PNG_bytes` should have a snake case name
[INFO] [stdout]  --> src/chunk_type.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn valid_PNG_bytes(bytes: [u8; 4]) -> bool {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `valid_png_bytes`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.40s
[INFO] running `Command { std: "docker" "inspect" "af5886043b0e7d7bb0bcfde0f83363629f71da4fdf930db6fe212e3b3c3f4739", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af5886043b0e7d7bb0bcfde0f83363629f71da4fdf930db6fe212e3b3c3f4739", kill_on_drop: false }`
[INFO] [stdout] af5886043b0e7d7bb0bcfde0f83363629f71da4fdf930db6fe212e3b3c3f4739