[INFO] cloning repository https://github.com/jason1105/mdtools
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jason1105/mdtools" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjason1105%2Fmdtools", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjason1105%2Fmdtools'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4da7e229e5a9468e4ed31a57deffe1271aa907de
[INFO] checking jason1105/mdtools 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%2Fjason1105%2Fmdtools" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-6-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/jason1105/mdtools
[INFO] finished tweaking git repo https://github.com/jason1105/mdtools
[INFO] tweaked toml for git repo https://github.com/jason1105/mdtools written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jason1105/mdtools 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/jason1105/mdtools 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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 54bbc256468689b83e6c26e999a1986537e4713067849efcbc748c38835c666f
[INFO] running `Command { std: "docker" "start" "-a" "54bbc256468689b83e6c26e999a1986537e4713067849efcbc748c38835c666f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "54bbc256468689b83e6c26e999a1986537e4713067849efcbc748c38835c666f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54bbc256468689b83e6c26e999a1986537e4713067849efcbc748c38835c666f", kill_on_drop: false }`
[INFO] [stdout] 54bbc256468689b83e6c26e999a1986537e4713067849efcbc748c38835c666f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 1951bbc58260afbcaa73c3e47d7eb781ee335212d167d2c3e782c84d14eda0bb
[INFO] running `Command { std: "docker" "start" "-a" "1951bbc58260afbcaa73c3e47d7eb781ee335212d167d2c3e782c84d14eda0bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling clap_derive v3.1.4
[INFO] [stderr]     Checking clap v3.1.6
[INFO] [stderr]     Checking mdtools v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::path::PathBuf`
[INFO] [stdout]   --> src/commands/publish.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |     use std::path::PathBuf;
[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 import: `super::Publish`
[INFO] [stdout]   --> src/commands/publish.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |     use super::Publish;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::prelude::*`
[INFO] [stdout]  --> src/env_settings/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::prelude::*`
[INFO] [stdout]  --> src/env_settings/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::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 variable: `line`
[INFO] [stdout]    --> src/commands/make_footlink.rs:230:16
[INFO] [stdout]     |
[INFO] [stdout] 230 | fn escape_link(line: &mut String, start: usize, end: usize) {
[INFO] [stdout]     |                ^^^^ help: if this is intentional, prefix it with an underscore: `_line`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> src/commands/make_footlink.rs:230:35
[INFO] [stdout]     |
[INFO] [stdout] 230 | fn escape_link(line: &mut String, start: usize, end: usize) {
[INFO] [stdout]     |                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]    --> src/commands/make_footlink.rs:230:49
[INFO] [stdout]     |
[INFO] [stdout] 230 | fn escape_link(line: &mut String, start: usize, end: usize) {
[INFO] [stdout]     |                                                 ^^^ help: if this is intentional, prefix it with an underscore: `_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/env_settings/obsidian_hugo.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let mut setting = MySetting {
[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 `start` is assigned to, but never used
[INFO] [stdout]    --> src/env_settings/obsidian_hugo.rs:166:14
[INFO] [stdout]     |
[INFO] [stdout] 166 |         let (mut start, mut end) = (0, 0);
[INFO] [stdout]     |              ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_start` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `start` is never read
[INFO] [stdout]    --> src/env_settings/obsidian_hugo.rs:176:25
[INFO] [stdout]     |
[INFO] [stdout] 176 |                         start = no;
[INFO] [stdout]     |                         ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `img_name`
[INFO] [stdout]    --> src/env_settings/obsidian_hugo.rs:231:25
[INFO] [stdout]     |
[INFO] [stdout] 231 |                     let img_name = caps.get(1).unwrap().as_str();
[INFO] [stdout]     |                         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_img_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyGit` is never constructed
[INFO] [stdout]   --> src/git_utils.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct MyGit;
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/commands/add_tag.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | /     /// Tags to be added.
[INFO] [stdout]  9 | |     #[clap(required = true)]
[INFO] [stdout] 10 | |     tags: Vec<String>,
[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 `mdtools` (lib) due to 1 previous error; 11 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/commands/make_footlink.rs:230:16
[INFO] [stdout]     |
[INFO] [stdout] 230 | fn escape_link(line: &mut String, start: usize, end: usize) {
[INFO] [stdout]     |                ^^^^ help: if this is intentional, prefix it with an underscore: `_line`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> src/commands/make_footlink.rs:230:35
[INFO] [stdout]     |
[INFO] [stdout] 230 | fn escape_link(line: &mut String, start: usize, end: usize) {
[INFO] [stdout]     |                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]    --> src/commands/make_footlink.rs:230:49
[INFO] [stdout]     |
[INFO] [stdout] 230 | fn escape_link(line: &mut String, start: usize, end: usize) {
[INFO] [stdout]     |                                                 ^^^ help: if this is intentional, prefix it with an underscore: `_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/env_settings/obsidian_hugo.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let mut setting = MySetting {
[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 `start` is assigned to, but never used
[INFO] [stdout]    --> src/env_settings/obsidian_hugo.rs:166:14
[INFO] [stdout]     |
[INFO] [stdout] 166 |         let (mut start, mut end) = (0, 0);
[INFO] [stdout]     |              ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_start` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `start` is never read
[INFO] [stdout]    --> src/env_settings/obsidian_hugo.rs:176:25
[INFO] [stdout]     |
[INFO] [stdout] 176 |                         start = no;
[INFO] [stdout]     |                         ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `img_name`
[INFO] [stdout]    --> src/env_settings/obsidian_hugo.rs:231:25
[INFO] [stdout]     |
[INFO] [stdout] 231 |                     let img_name = caps.get(1).unwrap().as_str();
[INFO] [stdout]     |                         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_img_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/env_settings/obsidian_hugo.rs:444:13
[INFO] [stdout]     |
[INFO] [stdout] 444 |         let a = setting
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/env_settings/obsidian_hugo.rs:456:13
[INFO] [stdout]     |
[INFO] [stdout] 456 |         let mut setting = MySetting::new(
[INFO] [stdout]     |             ----^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyGit` is never constructed
[INFO] [stdout]   --> src/git_utils.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct MyGit;
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/commands/add_tag.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | /     /// Tags to be added.
[INFO] [stdout]  9 | |     #[clap(required = true)]
[INFO] [stdout] 10 | |     tags: Vec<String>,
[INFO] [stdout]    | |_____________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/commands/publish.rs:87:9
[INFO] [stdout]    |
[INFO] [stdout] 87 |         cmd.publish();
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 87 |         let _ = cmd.publish();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mdtools` (lib test) due to 1 previous error; 12 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "1951bbc58260afbcaa73c3e47d7eb781ee335212d167d2c3e782c84d14eda0bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1951bbc58260afbcaa73c3e47d7eb781ee335212d167d2c3e782c84d14eda0bb", kill_on_drop: false }`
[INFO] [stdout] 1951bbc58260afbcaa73c3e47d7eb781ee335212d167d2c3e782c84d14eda0bb
