[INFO] fetching crate lsp-io 0.2.2...
[INFO] checking lsp-io-0.2.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate lsp-io 0.2.2 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate lsp-io 0.2.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate lsp-io 0.2.2
[INFO] tweaked toml for crates.io crate lsp-io 0.2.2 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate lsp-io 0.2.2 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 lsp-io 0.2.2 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] 361b68616f44a5654c6001ecc085fe7511f809a3971d4b42c2b41cb7bbb75784
[INFO] running `Command { std: "docker" "start" "-a" "361b68616f44a5654c6001ecc085fe7511f809a3971d4b42c2b41cb7bbb75784", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "361b68616f44a5654c6001ecc085fe7511f809a3971d4b42c2b41cb7bbb75784", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "361b68616f44a5654c6001ecc085fe7511f809a3971d4b42c2b41cb7bbb75784", kill_on_drop: false }`
[INFO] [stdout] 361b68616f44a5654c6001ecc085fe7511f809a3971d4b42c2b41cb7bbb75784
[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] fef094423d630f9b6fbf4de07e893ee2cbd7a6194738577991667de7069778b7
[INFO] running `Command { std: "docker" "start" "-a" "fef094423d630f9b6fbf4de07e893ee2cbd7a6194738577991667de7069778b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling parking_lot_core v0.9.1
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]     Checking tracing-core v0.1.22
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking tracing-log v0.1.2
[INFO] [stderr]     Checking tracing-subscriber v0.3.9
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking mio v0.8.0
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking parking_lot v0.12.0
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling serde_repr v0.1.7
[INFO] [stderr]    Compiling tracing-attributes v0.1.19
[INFO] [stderr]    Compiling clap_derive v3.1.2
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]     Checking tokio v1.17.0
[INFO] [stderr]     Checking tracing v0.1.31
[INFO] [stderr]     Checking clap v3.1.2
[INFO] [stderr]     Checking serde v1.0.136
[INFO] [stderr]     Checking serde_json v1.0.79
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking schemafy_core v0.6.0
[INFO] [stderr]     Checking lsp-ty v0.2.2
[INFO] [stderr]     Checking lsp-io v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> examples/yaya-lsp.rs:125:5
[INFO] [stdout]     |
[INFO] [stdout] 125 | /     /// listen host
[INFO] [stdout] 126 | |     #[clap(long, default_value = "127.0.0.1")]
[INFO] [stdout] 127 | |     host: 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 `lsp-io` (example "yaya-lsp") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "fef094423d630f9b6fbf4de07e893ee2cbd7a6194738577991667de7069778b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fef094423d630f9b6fbf4de07e893ee2cbd7a6194738577991667de7069778b7", kill_on_drop: false }`
[INFO] [stdout] fef094423d630f9b6fbf4de07e893ee2cbd7a6194738577991667de7069778b7
