[INFO] cloning repository https://github.com/suhailmuhammed157/pngme
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/suhailmuhammed157/pngme" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuhailmuhammed157%2Fpngme", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuhailmuhammed157%2Fpngme'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4a348821365cd8838be40eb1be4defb6e4e680d0
[INFO] checking suhailmuhammed157/pngme against try#943e2200e35c3825486c4671b6cab0107a07f8c1 for pr-148952
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsuhailmuhammed157%2Fpngme" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/suhailmuhammed157/pngme
[INFO] finished tweaking git repo https://github.com/suhailmuhammed157/pngme
[INFO] tweaked toml for git repo https://github.com/suhailmuhammed157/pngme written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/suhailmuhammed157/pngme on toolchain 943e2200e35c3825486c4671b6cab0107a07f8c1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+943e2200e35c3825486c4671b6cab0107a07f8c1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/suhailmuhammed157/pngme 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" "+943e2200e35c3825486c4671b6cab0107a07f8c1" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+943e2200e35c3825486c4671b6cab0107a07f8c1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 35a7e69a173df3fef45ffe50f968f4a430d43f7401a83f5fe6f4822fd1dae92c
[INFO] running `Command { std: "docker" "start" "-a" "35a7e69a173df3fef45ffe50f968f4a430d43f7401a83f5fe6f4822fd1dae92c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "35a7e69a173df3fef45ffe50f968f4a430d43f7401a83f5fe6f4822fd1dae92c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35a7e69a173df3fef45ffe50f968f4a430d43f7401a83f5fe6f4822fd1dae92c", kill_on_drop: false }`
[INFO] [stdout] 35a7e69a173df3fef45ffe50f968f4a430d43f7401a83f5fe6f4822fd1dae92c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+943e2200e35c3825486c4671b6cab0107a07f8c1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 61d8a46c64f70b84b9aac13fb19e117be01de79a82904d0cbd109ba7a8cabe85
[INFO] running `Command { std: "docker" "start" "-a" "61d8a46c64f70b84b9aac13fb19e117be01de79a82904d0cbd109ba7a8cabe85", kill_on_drop: false }`
[INFO] [stderr]     Checking pngme v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ffi::os_str::Display`
[INFO] [stdout]  --> src/chunk.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{ffi::os_str::Display, fmt, io::Read, str::FromStr, string::FromUtf8Error};
[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 import: `ffi::os_str::Display`
[INFO] [stdout]  --> src/chunk.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{ffi::os_str::Display, fmt, io::Read, str::FromStr, string::FromUtf8Error};
[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 import: `io::Read`
[INFO] [stdout]  --> src/chunk.rs:1:38
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{ffi::os_str::Display, fmt, io::Read, str::FromStr, string::FromUtf8Error};
[INFO] [stdout]   |                                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Chunk` is never constructed
[INFO] [stdout]  --> src/chunk.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Chunk {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `length`, `crc`, `chunk_type`, and `data_as_string` are never used
[INFO] [stdout]   --> src/chunk.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Chunk {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 22 |     fn new(chunk_type: ChunkType, chunk_data: Vec<u8>) -> Chunk {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     fn length(&self) -> u32 {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     fn crc(&self) -> u32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     fn chunk_type(&self) -> &ChunkType {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     fn data_as_string(&self) -> Result<String, FromUtf8Error> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ChunkTypeError` is never used
[INFO] [stdout]  --> src/chunk_type.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum ChunkTypeError {
[INFO] [stdout]   |          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ChunkType` is never constructed
[INFO] [stdout]   --> src/chunk_type.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct ChunkType([u8; 4]);
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `bytes`, `is_critical`, `is_public`, `is_reserved_bit_valid`, `is_safe_to_copy`, and `is_valid` are never used
[INFO] [stdout]   --> src/chunk_type.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 48 | impl ChunkType {
[INFO] [stdout]    | -------------- methods in this implementation
[INFO] [stdout] 49 |     pub fn bytes(&self) -> [u8; 4] {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |     fn is_critical(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |     fn is_public(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |     fn is_reserved_bit_valid(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 77 |     fn is_safe_to_copy(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 |     fn is_valid(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io::Read`
[INFO] [stdout]  --> src/chunk.rs:1:38
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{ffi::os_str::Display, fmt, io::Read, str::FromStr, string::FromUtf8Error};
[INFO] [stdout]   |                                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "61d8a46c64f70b84b9aac13fb19e117be01de79a82904d0cbd109ba7a8cabe85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61d8a46c64f70b84b9aac13fb19e117be01de79a82904d0cbd109ba7a8cabe85", kill_on_drop: false }`
[INFO] [stdout] 61d8a46c64f70b84b9aac13fb19e117be01de79a82904d0cbd109ba7a8cabe85
