[INFO] cloning repository https://github.com/mrobakowski/word-counter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mrobakowski/word-counter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrobakowski%2Fword-counter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrobakowski%2Fword-counter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 77efde7ba0acf8de6b381aeba082368ab25efa5d
[INFO] checking mrobakowski/word-counter 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%2Fmrobakowski%2Fword-counter" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-3-tc2/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/mrobakowski/word-counter
[INFO] finished tweaking git repo https://github.com/mrobakowski/word-counter
[INFO] tweaked toml for git repo https://github.com/mrobakowski/word-counter written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mrobakowski/word-counter 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/mrobakowski/word-counter 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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 8d3479305a0f9d1a86373547dee0aafeae3426d6feb2bf0534e95427f1044047
[INFO] running `Command { std: "docker" "start" "-a" "8d3479305a0f9d1a86373547dee0aafeae3426d6feb2bf0534e95427f1044047", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d3479305a0f9d1a86373547dee0aafeae3426d6feb2bf0534e95427f1044047", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d3479305a0f9d1a86373547dee0aafeae3426d6feb2bf0534e95427f1044047", kill_on_drop: false }`
[INFO] [stdout] 8d3479305a0f9d1a86373547dee0aafeae3426d6feb2bf0534e95427f1044047
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 03b98e8ead3dd45dc526e079ca0dffa543700a45a2b1b1a5901aff3a4d06a1bb
[INFO] running `Command { std: "docker" "start" "-a" "03b98e8ead3dd45dc526e079ca0dffa543700a45a2b1b1a5901aff3a4d06a1bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.42
[INFO] [stderr]    Compiling unicode-ident v1.0.2
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]    Compiling tokio v1.20.1
[INFO] [stderr]     Checking tracing-core v0.1.29
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling serde_derive v1.0.140
[INFO] [stderr]    Compiling serde v1.0.140
[INFO] [stderr]    Compiling async-trait v0.1.56
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]    Compiling serde_json v1.0.82
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]     Checking tracing-log v0.1.3
[INFO] [stderr]     Checking parking_lot_core v0.9.3
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking tracing-subscriber v0.3.15
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.22
[INFO] [stderr]    Compiling pin-project-internal v1.0.11
[INFO] [stderr]    Compiling clap_derive v3.2.15
[INFO] [stderr]     Checking axum-core v0.2.7
[INFO] [stderr]     Checking pin-project v1.0.11
[INFO] [stderr]     Checking tracing v0.1.36
[INFO] [stderr]     Checking clap v3.2.16
[INFO] [stderr]     Checking tower v0.4.13
[INFO] [stderr]     Checking hyper v0.14.20
[INFO] [stderr]     Checking tokio-stream v0.1.9
[INFO] [stderr]     Checking tower-http v0.3.4
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking inlinable_string v0.1.15
[INFO] [stderr]     Checking axum v0.5.13
[INFO] [stderr]     Checking word-counter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `let_else` has been stable since 1.65.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(let_else)]
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `let_else` has been stable since 1.65.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(let_else)]
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     exe_path: Option<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:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     exe_path: Option<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 `word-counter` (bin "word-counter") due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `word-counter` (bin "word-counter" test) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "03b98e8ead3dd45dc526e079ca0dffa543700a45a2b1b1a5901aff3a4d06a1bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03b98e8ead3dd45dc526e079ca0dffa543700a45a2b1b1a5901aff3a4d06a1bb", kill_on_drop: false }`
[INFO] [stdout] 03b98e8ead3dd45dc526e079ca0dffa543700a45a2b1b1a5901aff3a4d06a1bb
