[INFO] cloning repository https://github.com/lambdageek/friendly_pipes
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lambdageek/friendly_pipes" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flambdageek%2Ffriendly_pipes", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flambdageek%2Ffriendly_pipes'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7e10a14793f1e02e2446fcad76437c43a342790a
[INFO] checking lambdageek/friendly_pipes 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%2Flambdageek%2Ffriendly_pipes" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-4-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/lambdageek/friendly_pipes
[INFO] finished tweaking git repo https://github.com/lambdageek/friendly_pipes
[INFO] tweaked toml for git repo https://github.com/lambdageek/friendly_pipes written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/lambdageek/friendly_pipes 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/lambdageek/friendly_pipes 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] b0c70f754ed1f3cf4fa9673f58e8656dc39a6019858e8eecf16c1cf10a2de689
[INFO] running `Command { std: "docker" "start" "-a" "b0c70f754ed1f3cf4fa9673f58e8656dc39a6019858e8eecf16c1cf10a2de689", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b0c70f754ed1f3cf4fa9673f58e8656dc39a6019858e8eecf16c1cf10a2de689", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0c70f754ed1f3cf4fa9673f58e8656dc39a6019858e8eecf16c1cf10a2de689", kill_on_drop: false }`
[INFO] [stdout] b0c70f754ed1f3cf4fa9673f58e8656dc39a6019858e8eecf16c1cf10a2de689
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] b36f1337fedcc974e6323e08fd6a6815a1fa5cfde2084186ef2b2613f4f70445
[INFO] running `Command { std: "docker" "start" "-a" "b36f1337fedcc974e6323e08fd6a6815a1fa5cfde2084186ef2b2613f4f70445", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]     Checking smallvec v1.15.1
[INFO] [stderr]     Checking parking_lot_core v0.9.11
[INFO] [stderr]     Checking parking_lot v0.12.4
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]     Checking tokio v1.46.1
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking serde v1.0.219
[INFO] [stderr]     Checking tokio-util v0.7.15
[INFO] [stderr]     Checking friendly_pipes v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_json v1.0.140
[INFO] [stdout] error: this type will no longer be must used: Result<ExitCode, Infallible>
[INFO] [stdout]   --> examples/demo.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 | /         tokio::runtime::Runtime::new()
[INFO] [stdout] 34 | |             .expect("Failed to create Tokio runtime")
[INFO] [stdout] 35 | |             .block_on(async {
[INFO] [stdout] 36 | |                 let current_exe =
[INFO] [stdout] ...  |
[INFO] [stdout] 53 | |             })
[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<ExitCode, Infallible>
[INFO] [stdout]   --> examples/demo.rs:45:26
[INFO] [stdout]    |
[INFO] [stdout] 45 |               .or_else(|e| {
[INFO] [stdout]    |  __________________________^
[INFO] [stdout] 46 | |                 match e.try_into_panic() {
[INFO] [stdout] 47 | |                     Ok(panic) => std::panic::resume_unwind(panic),
[INFO] [stdout] 48 | |                     Err(e) => eprintln!("Server task failed: {:?}", e),
[INFO] [stdout] ...  |
[INFO] [stdout] 53 | |             })
[INFO] [stdout]    | |_____________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<ExitCode, Infallible>
[INFO] [stdout]   --> examples/demo.rs:50:17
[INFO] [stdout]    |
[INFO] [stdout] 50 | /                 Ok::<std::process::ExitCode, std::convert::Infallible>(
[INFO] [stdout] 51 | |                     std::process::ExitCode::FAILURE,
[INFO] [stdout] 52 | |                 )
[INFO] [stdout]    | |_________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `friendly_pipes` (example "demo") due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "b36f1337fedcc974e6323e08fd6a6815a1fa5cfde2084186ef2b2613f4f70445", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b36f1337fedcc974e6323e08fd6a6815a1fa5cfde2084186ef2b2613f4f70445", kill_on_drop: false }`
[INFO] [stdout] b36f1337fedcc974e6323e08fd6a6815a1fa5cfde2084186ef2b2613f4f70445