[INFO] fetching crate mantra-lang-tracing 0.7.0...
[INFO] checking mantra-lang-tracing-0.7.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate mantra-lang-tracing 0.7.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate mantra-lang-tracing 0.7.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate mantra-lang-tracing 0.7.0
[INFO] tweaked toml for crates.io crate mantra-lang-tracing 0.7.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mantra-lang-tracing 0.7.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 38 packages to latest compatible versions
[INFO] [stderr]       Adding tree-sitter v0.22.6 (available: v0.25.10)
[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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 384fba1e79fb2cd6f8c7a734540b4be3b75f843a9032cfd89a6d307436685a23
[INFO] running `Command { std: "docker" "start" "-a" "384fba1e79fb2cd6f8c7a734540b4be3b75f843a9032cfd89a6d307436685a23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "384fba1e79fb2cd6f8c7a734540b4be3b75f843a9032cfd89a6d307436685a23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "384fba1e79fb2cd6f8c7a734540b4be3b75f843a9032cfd89a6d307436685a23", kill_on_drop: false }`
[INFO] [stdout] 384fba1e79fb2cd6f8c7a734540b4be3b75f843a9032cfd89a6d307436685a23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 4d24994fa8211b73c72edd0e622895c75f86fab0c9d967dafcaee60f6b8434f9
[INFO] running `Command { std: "docker" "start" "-a" "4d24994fa8211b73c72edd0e622895c75f86fab0c9d967dafcaee60f6b8434f9", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling time-macros v0.2.24
[INFO] [stderr]    Compiling deranged v0.5.5
[INFO] [stderr]    Compiling tree-sitter v0.22.6
[INFO] [stderr]    Compiling path-slash v0.2.1
[INFO] [stderr]     Checking fluent-uri v0.1.4
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]    Compiling serde_derive_internals v0.29.1
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling serde_repr v0.1.20
[INFO] [stderr]    Compiling schemars_derive v0.8.22
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]     Checking time v0.3.44
[INFO] [stderr]     Checking schemars v0.8.22
[INFO] [stderr]     Checking lsp-types v0.97.0
[INFO] [stderr]     Checking mantra-schema v0.7.0
[INFO] [stderr]    Compiling mantra-lang-tracing v0.7.0
[INFO] [stderr]    Compiling mantra-rust-procm v0.7.0
[INFO] [stderr]     Checking mantra-rust-macros v0.7.0
[INFO] [stderr]     Checking mantra-lang-tracing v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `path_slash::PathBufExt`
[INFO] [stdout]  --> src/path.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use path_slash::PathBufExt;
[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: `path_slash::PathBufExt`
[INFO] [stdout]  --> src/path.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use path_slash::PathBufExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<path::SlashPathBuf, Infallible>
[INFO] [stdout]   --> src/path.rs:40:53
[INFO] [stdout]    |
[INFO] [stdout] 40 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]    |  _____________________________________________________^
[INFO] [stdout] 41 | |         Ok(Self(PathBuf::from(s)))
[INFO] [stdout] 42 | |     }
[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<path::SlashPathBuf, Infallible>
[INFO] [stdout]   --> src/path.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         Ok(Self(PathBuf::from(s)))
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<path::SlashPathBuf, Infallible>
[INFO] [stdout]    --> src/path.rs:126:26
[INFO] [stdout]     |
[INFO] [stdout] 126 |         let slash_path = SlashPathBuf::from_str(path).unwrap();
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mantra-lang-tracing` (lib test) due to 3 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `mantra-lang-tracing` (lib) due to 2 previous errors; 1 warning emitted
[INFO] [stdout] error: this type will no longer be must used: Result<SlashPathBuf, Infallible>
[INFO] [stdout]   --> src/path.rs:40:53
[INFO] [stdout]    |
[INFO] [stdout] 40 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]    |  _____________________________________________________^
[INFO] [stdout] 41 | |         Ok(Self(PathBuf::from(s)))
[INFO] [stdout] 42 | |     }
[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<SlashPathBuf, Infallible>
[INFO] [stdout]   --> src/path.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         Ok(Self(PathBuf::from(s)))
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4d24994fa8211b73c72edd0e622895c75f86fab0c9d967dafcaee60f6b8434f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d24994fa8211b73c72edd0e622895c75f86fab0c9d967dafcaee60f6b8434f9", kill_on_drop: false }`
[INFO] [stdout] 4d24994fa8211b73c72edd0e622895c75f86fab0c9d967dafcaee60f6b8434f9
