[INFO] cloning repository https://github.com/xuyifangreeneyes/pngme
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xuyifangreeneyes/pngme" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxuyifangreeneyes%2Fpngme", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxuyifangreeneyes%2Fpngme'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5b20112570d7ab41684a493b2a708214b4d4c6f3
[INFO] checking xuyifangreeneyes/pngme against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxuyifangreeneyes%2Fpngme" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xuyifangreeneyes/pngme on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xuyifangreeneyes/pngme
[INFO] finished tweaking git repo https://github.com/xuyifangreeneyes/pngme
[INFO] tweaked toml for git repo https://github.com/xuyifangreeneyes/pngme written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/xuyifangreeneyes/pngme already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] c9179e62a32a3b32508540eead6c5c542a79ebde8dfe9883be06ba3264342f68
[INFO] running `Command { std: "docker" "start" "-a" "c9179e62a32a3b32508540eead6c5c542a79ebde8dfe9883be06ba3264342f68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9179e62a32a3b32508540eead6c5c542a79ebde8dfe9883be06ba3264342f68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9179e62a32a3b32508540eead6c5c542a79ebde8dfe9883be06ba3264342f68", kill_on_drop: false }`
[INFO] [stdout] c9179e62a32a3b32508540eead6c5c542a79ebde8dfe9883be06ba3264342f68
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bd8dd8f94b960faa4d3993c707b49ed1c134cbe84d51ed7a1b9ad21d2b3981e2
[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" "bd8dd8f94b960faa4d3993c707b49ed1c134cbe84d51ed7a1b9ad21d2b3981e2", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.45
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling anyhow v1.0.33
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling structopt-derive v0.4.13
[INFO] [stderr]     Checking structopt v0.3.20
[INFO] [stderr]     Checking pngme v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `length`
[INFO] [stdout]   --> src/chunk.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn length(&self) -> u32 {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `crc`
[INFO] [stdout]   --> src/chunk.rs:84:12
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn crc(&self) -> u32 {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_chunks`
[INFO] [stdout]   --> src/png.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn from_chunks(chunks: Vec<Chunk>) -> Png {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `append_chunk`
[INFO] [stdout]   --> src/png.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn append_chunk(&mut self, chunk: Chunk) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `header`
[INFO] [stdout]   --> src/png.rs:87:12
[INFO] [stdout]    |
[INFO] [stdout] 87 |     pub fn header(&self) -> &[u8; 8] {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `header`
[INFO] [stdout]   --> src/png.rs:87:12
[INFO] [stdout]    |
[INFO] [stdout] 87 |     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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.62s
[INFO] running `Command { std: "docker" "inspect" "bd8dd8f94b960faa4d3993c707b49ed1c134cbe84d51ed7a1b9ad21d2b3981e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd8dd8f94b960faa4d3993c707b49ed1c134cbe84d51ed7a1b9ad21d2b3981e2", kill_on_drop: false }`
[INFO] [stdout] bd8dd8f94b960faa4d3993c707b49ed1c134cbe84d51ed7a1b9ad21d2b3981e2