[INFO] fetching crate git-status-tracker 3.0.0...
[INFO] checking git-status-tracker-3.0.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate git-status-tracker 3.0.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate git-status-tracker 3.0.0
[INFO] finished tweaking crates.io crate git-status-tracker 3.0.0
[INFO] tweaked toml for crates.io crate git-status-tracker 3.0.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate git-status-tracker 3.0.0 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 crates.io crate git-status-tracker 3.0.0 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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 8cd644effacc6921e3c665cf5c58ea4e0a872449cfdd19eed5c9a16bf5c23c1c
[INFO] running `Command { std: "docker" "start" "-a" "8cd644effacc6921e3c665cf5c58ea4e0a872449cfdd19eed5c9a16bf5c23c1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8cd644effacc6921e3c665cf5c58ea4e0a872449cfdd19eed5c9a16bf5c23c1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cd644effacc6921e3c665cf5c58ea4e0a872449cfdd19eed5c9a16bf5c23c1c", kill_on_drop: false }`
[INFO] [stdout] 8cd644effacc6921e3c665cf5c58ea4e0a872449cfdd19eed5c9a16bf5c23c1c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] f92b9785a253c86ad5dc67e152f52aa43e3ae180af5fe7065121a03e18f1090f
[INFO] running `Command { std: "docker" "start" "-a" "f92b9785a253c86ad5dc67e152f52aa43e3ae180af5fe7065121a03e18f1090f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling libc v0.2.118
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling crossbeam-utils v0.8.7
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.7
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking sled v0.34.7
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling clap_derive v3.1.0
[INFO] [stderr]     Checking clap v3.1.0
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking git-status-tracker v3.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | /     /// The path of the folder.
[INFO] [stdout] 29 | |     #[clap(short, long)]
[INFO] [stdout] 30 | |     path: 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] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | /     /// The git branch, if any.
[INFO] [stdout] 33 | |     #[clap(short, long, default_value = "")]
[INFO] [stdout] 34 | |     branch: String,
[INFO] [stdout]    | |__________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | /     /// The git status (--porcelain), if any.
[INFO] [stdout] 37 | |     #[clap(short, long, default_value = "")]
[INFO] [stdout] 38 | |     git_status: String,
[INFO] [stdout]    | |______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | /     /// The path of the folder.
[INFO] [stdout] 44 | |     #[clap(short, long)]
[INFO] [stdout] 45 | |     path: String,
[INFO] [stdout]    | |________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `git-status-tracker` (bin "git-status-tracker") due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | /     /// The path of the folder.
[INFO] [stdout] 29 | |     #[clap(short, long)]
[INFO] [stdout] 30 | |     path: 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] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | /     /// The git branch, if any.
[INFO] [stdout] 33 | |     #[clap(short, long, default_value = "")]
[INFO] [stdout] 34 | |     branch: String,
[INFO] [stdout]    | |__________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | /     /// The git status (--porcelain), if any.
[INFO] [stdout] 37 | |     #[clap(short, long, default_value = "")]
[INFO] [stdout] 38 | |     git_status: String,
[INFO] [stdout]    | |______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | /     /// The path of the folder.
[INFO] [stdout] 44 | |     #[clap(short, long)]
[INFO] [stdout] 45 | |     path: String,
[INFO] [stdout]    | |________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `git-status-tracker` (bin "git-status-tracker" test) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "f92b9785a253c86ad5dc67e152f52aa43e3ae180af5fe7065121a03e18f1090f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f92b9785a253c86ad5dc67e152f52aa43e3ae180af5fe7065121a03e18f1090f", kill_on_drop: false }`
[INFO] [stdout] f92b9785a253c86ad5dc67e152f52aa43e3ae180af5fe7065121a03e18f1090f