[INFO] cloning repository https://github.com/connor-ashton-dev/png_secret_message
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/connor-ashton-dev/png_secret_message" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconnor-ashton-dev%2Fpng_secret_message", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconnor-ashton-dev%2Fpng_secret_message'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ece3fad0ee7ebf0e88c6066102119f70d98b064d
[INFO] checking connor-ashton-dev/png_secret_message against master#8424f8e8cdf07010967a57584fd647b30e930d4d for pr-120095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconnor-ashton-dev%2Fpng_secret_message" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/connor-ashton-dev/png_secret_message on toolchain 8424f8e8cdf07010967a57584fd647b30e930d4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/connor-ashton-dev/png_secret_message
[INFO] finished tweaking git repo https://github.com/connor-ashton-dev/png_secret_message
[INFO] tweaked toml for git repo https://github.com/connor-ashton-dev/png_secret_message written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/connor-ashton-dev/png_secret_message 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" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking connor-ashton-dev/png_secret_message against try#047472f299946caf090d1b5608ae4bd9f0416256+rustflags=-Ddereferencing_mut_binding for pr-120095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconnor-ashton-dev%2Fpng_secret_message" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/connor-ashton-dev/png_secret_message on toolchain 047472f299946caf090d1b5608ae4bd9f0416256
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/connor-ashton-dev/png_secret_message
[INFO] finished tweaking git repo https://github.com/connor-ashton-dev/png_secret_message
[INFO] tweaked toml for git repo https://github.com/connor-ashton-dev/png_secret_message written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/connor-ashton-dev/png_secret_message 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" "+047472f299946caf090d1b5608ae4bd9f0416256" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded anstream v0.6.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a25b648899a6be3025e479938be36a9a108ad56d7c81eaf5c6d843b3b9ebdfeb
[INFO] running `Command { std: "docker" "start" "-a" "a25b648899a6be3025e479938be36a9a108ad56d7c81eaf5c6d843b3b9ebdfeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a25b648899a6be3025e479938be36a9a108ad56d7c81eaf5c6d843b3b9ebdfeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a25b648899a6be3025e479938be36a9a108ad56d7c81eaf5c6d843b3b9ebdfeb", kill_on_drop: false }`
[INFO] [stdout] a25b648899a6be3025e479938be36a9a108ad56d7c81eaf5c6d843b3b9ebdfeb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Ddereferencing_mut_binding" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9435ea769045f379161469bf70d3fd22e0b3c8a903bbe93ae5fb5574e24a2528
[INFO] running `Command { std: "docker" "start" "-a" "9435ea769045f379161469bf70d3fd22e0b3c8a903bbe93ae5fb5574e24a2528", kill_on_drop: false }`
[INFO] [stderr]     Checking utf8parse v0.2.1
[INFO] [stderr]     Checking anstyle v1.0.4
[INFO] [stderr]     Checking anstyle-query v1.0.2
[INFO] [stderr]     Checking colorchoice v1.0.0
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking clap_lex v0.6.0
[INFO] [stderr]     Checking crc-catalog v2.4.0
[INFO] [stderr]     Checking crc v3.0.1
[INFO] [stderr]     Checking anstyle-parse v0.2.3
[INFO] [stderr]     Checking anstream v0.6.8
[INFO] [stderr]     Checking clap_builder v4.4.18
[INFO] [stderr]     Checking clap v4.4.18
[INFO] [stderr]     Checking pngme v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum `PngMeArgs` is never used
[INFO] [stdout]  --> src/args.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum PngMeArgs {
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `EncodeArgs` is never constructed
[INFO] [stdout]   --> src/args.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct EncodeArgs {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DecodeArgs` is never constructed
[INFO] [stdout]   --> src/args.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct DecodeArgs {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RemoveArgs` is never constructed
[INFO] [stdout]   --> src/args.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct RemoveArgs {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PrintArgs` is never constructed
[INFO] [stdout]   --> src/args.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct PrintArgs {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `chunks` is never used
[INFO] [stdout]   --> src/png.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Png {
[INFO] [stdout]    | -------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 16 |     fn chunks(&self) -> &[Chunk] {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `PngMeArgs` is never used
[INFO] [stdout]  --> src/args.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum PngMeArgs {
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `EncodeArgs` is never constructed
[INFO] [stdout]   --> src/args.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct EncodeArgs {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DecodeArgs` is never constructed
[INFO] [stdout]   --> src/args.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct DecodeArgs {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RemoveArgs` is never constructed
[INFO] [stdout]   --> src/args.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct RemoveArgs {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PrintArgs` is never constructed
[INFO] [stdout]   --> src/args.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct PrintArgs {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.38s
[INFO] running `Command { std: "docker" "inspect" "9435ea769045f379161469bf70d3fd22e0b3c8a903bbe93ae5fb5574e24a2528", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9435ea769045f379161469bf70d3fd22e0b3c8a903bbe93ae5fb5574e24a2528", kill_on_drop: false }`
[INFO] [stdout] 9435ea769045f379161469bf70d3fd22e0b3c8a903bbe93ae5fb5574e24a2528