[INFO] cloning repository https://github.com/ggkkaa/iff_rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ggkkaa/iff_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fggkkaa%2Fiff_rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fggkkaa%2Fiff_rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dc7a84e5285a9afabb5830bde7e57dfddf595aa8
[INFO] checking ggkkaa/iff_rs against master#ba412a6e70ac84641be7764d088acabd0eb3fa39 for pr-145457
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fggkkaa%2Fiff_rs" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ggkkaa/iff_rs
[INFO] finished tweaking git repo https://github.com/ggkkaa/iff_rs
[INFO] tweaked toml for git repo https://github.com/ggkkaa/iff_rs written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ggkkaa/iff_rs on toolchain ba412a6e70ac84641be7764d088acabd0eb3fa39
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ba412a6e70ac84641be7764d088acabd0eb3fa39" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ggkkaa/iff_rs 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" "+ba412a6e70ac84641be7764d088acabd0eb3fa39" "fetch" "--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-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+ba412a6e70ac84641be7764d088acabd0eb3fa39" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d4e164e758b25e411bfd14fdc6e9a821d71f257465d55ef206187c48e45311ad
[INFO] running `Command { std: "docker" "start" "-a" "d4e164e758b25e411bfd14fdc6e9a821d71f257465d55ef206187c48e45311ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d4e164e758b25e411bfd14fdc6e9a821d71f257465d55ef206187c48e45311ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4e164e758b25e411bfd14fdc6e9a821d71f257465d55ef206187c48e45311ad", kill_on_drop: false }`
[INFO] [stdout] d4e164e758b25e411bfd14fdc6e9a821d71f257465d55ef206187c48e45311ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+ba412a6e70ac84641be7764d088acabd0eb3fa39" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d16a704ad544c0f7d4fd8580688e8286c1e0d0e17f1851f4ebc36dfd8ea23f83
[INFO] running `Command { std: "docker" "start" "-a" "d16a704ad544c0f7d4fd8580688e8286c1e0d0e17f1851f4ebc36dfd8ea23f83", kill_on_drop: false }`
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking iff_rs v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/iff.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |         if (chunk.len > 0) {
[INFO] [stdout]    |            ^             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 36 -         if (chunk.len > 0) {
[INFO] [stdout] 36 +         if chunk.len > 0 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/iff.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |         if (chunk.len > 0) {
[INFO] [stdout]    |            ^             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 36 -         if (chunk.len > 0) {
[INFO] [stdout] 36 +         if chunk.len > 0 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `len` is never read
[INFO] [stdout]   --> src/iff.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let mut len: u32 = 0;
[INFO] [stdout]    |             ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `len` is never read
[INFO] [stdout]   --> src/iff.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let mut len: u32 = 0;
[INFO] [stdout]    |             ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `IFFFile`
[INFO] [stdout]  --> tests/tests.rs:1:14
[INFO] [stdout]   |
[INFO] [stdout] 1 | use iff_rs::{IFFFile, parse_iff};
[INFO] [stdout]   |              ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> tests/tests.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{self, Error, Write};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "d16a704ad544c0f7d4fd8580688e8286c1e0d0e17f1851f4ebc36dfd8ea23f83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d16a704ad544c0f7d4fd8580688e8286c1e0d0e17f1851f4ebc36dfd8ea23f83", kill_on_drop: false }`
[INFO] [stdout] d16a704ad544c0f7d4fd8580688e8286c1e0d0e17f1851f4ebc36dfd8ea23f83