[INFO] cloning repository https://github.com/koralle/file-inout
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/koralle/file-inout" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkoralle%2Ffile-inout", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkoralle%2Ffile-inout'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] de00a74828f296fb722a237ea66120ec09ccaf84
[INFO] checking koralle/file-inout against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkoralle%2Ffile-inout" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/koralle/file-inout
[INFO] finished tweaking git repo https://github.com/koralle/file-inout
[INFO] tweaked toml for git repo https://github.com/koralle/file-inout written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/koralle/file-inout on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/koralle/file-inout 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d9c08fd9b77e853f69861776164ed27c4f27934d3644189e508afd8b3c22836d
[INFO] running `Command { std: "docker" "start" "-a" "d9c08fd9b77e853f69861776164ed27c4f27934d3644189e508afd8b3c22836d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9c08fd9b77e853f69861776164ed27c4f27934d3644189e508afd8b3c22836d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9c08fd9b77e853f69861776164ed27c4f27934d3644189e508afd8b3c22836d", kill_on_drop: false }`
[INFO] [stdout] d9c08fd9b77e853f69861776164ed27c4f27934d3644189e508afd8b3c22836d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Dunmustuse_in_always_ok" "-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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 33183ba0521bd665dbe253d6f9ed5caa7e7caa047fe8c61eac94a922bc761126
[INFO] running `Command { std: "docker" "start" "-a" "33183ba0521bd665dbe253d6f9ed5caa7e7caa047fe8c61eac94a922bc761126", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.5
[INFO] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling rstest v0.12.0
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]    Compiling speculate v0.1.2
[INFO] [stderr]     Checking file-inout v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::io::prelude::*`
[INFO] [stdout]  --> src/file.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::prelude::*;
[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 imports: `ErrorKind`, `Read`, `Write`, and `self`
[INFO] [stdout]  --> src/file.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{self, ErrorKind, Read, Write};
[INFO] [stdout]   |               ^^^^  ^^^^^^^^^  ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rstest::*`
[INFO] [stdout]  --> src/file.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rstest::*;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `speculate::speculate`
[INFO] [stdout]  --> src/file.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use speculate::speculate;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `OpenOptions`
[INFO] [stdout]  --> src/main.rs:7:21
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::fs::{File, OpenOptions};
[INFO] [stdout]   |                     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ErrorKind` and `Write`
[INFO] [stdout]  --> src/main.rs:8:21
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::{self, ErrorKind, Read, Write};
[INFO] [stdout]   |                     ^^^^^^^^^        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/main.rs:8:32
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::{self, ErrorKind, Read, Write};
[INFO] [stdout]   |                                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::prelude::*`
[INFO] [stdout]  --> src/file.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::prelude::*;
[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 imports: `ErrorKind`, `Read`, `Write`, and `self`
[INFO] [stdout]  --> src/file.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{self, ErrorKind, Read, Write};
[INFO] [stdout]   |               ^^^^  ^^^^^^^^^  ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `OpenOptions`
[INFO] [stdout]  --> src/main.rs:7:21
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::fs::{File, OpenOptions};
[INFO] [stdout]   |                     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `file-inout` (bin "file-inout") due to 1 previous error; 5 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused imports: `ErrorKind` and `Write`
[INFO] [stdout]  --> src/main.rs:8:21
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::{self, ErrorKind, Read, Write};
[INFO] [stdout]   |                     ^^^^^^^^^        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/main.rs:8:32
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::{self, ErrorKind, Read, Write};
[INFO] [stdout]   |                                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | /     #[structopt(
[INFO] [stdout] 17 | |         name = "INPUT_FILE",
[INFO] [stdout] 18 | |         short = "i",
[INFO] [stdout] 19 | |         long = "input_file",
[INFO] [stdout] 20 | |         help = "Input a path to simple text file."
[INFO] [stdout] 21 | |     )]
[INFO] [stdout] 22 | |     input: PathBuf,
[INFO] [stdout]    | |__________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | /     #[structopt(
[INFO] [stdout] 17 | |         name = "INPUT_FILE",
[INFO] [stdout] 18 | |         short = "i",
[INFO] [stdout] 19 | |         long = "input_file",
[INFO] [stdout] 20 | |         help = "Input a path to simple text file."
[INFO] [stdout] 21 | |     )]
[INFO] [stdout] 22 | |     input: PathBuf,
[INFO] [stdout]    | |__________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `file-inout` (bin "file-inout" test) due to 1 previous error; 7 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "33183ba0521bd665dbe253d6f9ed5caa7e7caa047fe8c61eac94a922bc761126", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33183ba0521bd665dbe253d6f9ed5caa7e7caa047fe8c61eac94a922bc761126", kill_on_drop: false }`
[INFO] [stdout] 33183ba0521bd665dbe253d6f9ed5caa7e7caa047fe8c61eac94a922bc761126
