[INFO] fetching crate rust_dos_header 0.1.1...
[INFO] building rust_dos_header-0.1.1 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate rust_dos_header 0.1.1 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate rust_dos_header 0.1.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate rust_dos_header 0.1.1
[INFO] tweaked toml for crates.io crate rust_dos_header 0.1.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rust_dos_header 0.1.1 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rust_dos_header 0.1.1 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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4ff98b8596fa8524a1b5643540d563b54867d797652ef3eb1f43b892e0519eea
[INFO] running `Command { std: "docker" "start" "-a" "4ff98b8596fa8524a1b5643540d563b54867d797652ef3eb1f43b892e0519eea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ff98b8596fa8524a1b5643540d563b54867d797652ef3eb1f43b892e0519eea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ff98b8596fa8524a1b5643540d563b54867d797652ef3eb1f43b892e0519eea", kill_on_drop: false }`
[INFO] [stdout] 4ff98b8596fa8524a1b5643540d563b54867d797652ef3eb1f43b892e0519eea
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 651118f1d529e792a8490c31e8e1d573adc7d7f9267c29da861e81e2a58b7f57
[INFO] running `Command { std: "docker" "start" "-a" "651118f1d529e792a8490c31e8e1d573adc7d7f9267c29da861e81e2a58b7f57", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_dos_header v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/dos/decode.rs:119:35
[INFO] [stdout]     |
[INFO] [stdout] 119 | fn read_move_vec_u18_list_by_file(mut files: &File, len: usize) -> Vec<u16> {
[INFO] [stdout]     |                                   ----^^^^^
[INFO] [stdout]     |                                   |
[INFO] [stdout]     |                                   help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/dos/decode.rs:58:20
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn decode_file(mut files: &File) -> Result<structs::DosHeader, Box<dyn std::error::Error>> {
[INFO] [stdout]    |                    ----^^^^^
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "651118f1d529e792a8490c31e8e1d573adc7d7f9267c29da861e81e2a58b7f57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "651118f1d529e792a8490c31e8e1d573adc7d7f9267c29da861e81e2a58b7f57", kill_on_drop: false }`
[INFO] [stdout] 651118f1d529e792a8490c31e8e1d573adc7d7f9267c29da861e81e2a58b7f57
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] caa7dde23f4996513807a57b2ac3a664310071d1c7bed6a99ef3860512729718
[INFO] running `Command { std: "docker" "start" "-a" "caa7dde23f4996513807a57b2ac3a664310071d1c7bed6a99ef3860512729718", kill_on_drop: false }`
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/dos/decode.rs:119:35
[INFO] [stdout]     |
[INFO] [stdout] 119 | fn read_move_vec_u18_list_by_file(mut files: &File, len: usize) -> Vec<u16> {
[INFO] [stdout]     |                                   ----^^^^^
[INFO] [stdout]     |                                   |
[INFO] [stdout]     |                                   help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/dos/decode.rs:58:20
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn decode_file(mut files: &File) -> Result<structs::DosHeader, Box<dyn std::error::Error>> {
[INFO] [stdout]    |                    ----^^^^^
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rust_dos_header v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> examples/decode_dos_header_stream.rs:1:26
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fs::File, io::{Read, Seek}};
[INFO] [stdout]   |                          ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/dos/decode.rs:119:35
[INFO] [stdout]     |
[INFO] [stdout] 119 | fn read_move_vec_u18_list_by_file(mut files: &File, len: usize) -> Vec<u16> {
[INFO] [stdout]     |                                   ----^^^^^
[INFO] [stdout]     |                                   |
[INFO] [stdout]     |                                   help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/dos/decode.rs:58:20
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn decode_file(mut files: &File) -> Result<structs::DosHeader, Box<dyn std::error::Error>> {
[INFO] [stdout]    |                    ----^^^^^
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "caa7dde23f4996513807a57b2ac3a664310071d1c7bed6a99ef3860512729718", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "caa7dde23f4996513807a57b2ac3a664310071d1c7bed6a99ef3860512729718", kill_on_drop: false }`
[INFO] [stdout] caa7dde23f4996513807a57b2ac3a664310071d1c7bed6a99ef3860512729718