[INFO] fetching crate comprehensive_warm_channels 0.5.0...
[INFO] checking comprehensive_warm_channels-0.5.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate comprehensive_warm_channels 0.5.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate comprehensive_warm_channels 0.5.0
[INFO] finished tweaking crates.io crate comprehensive_warm_channels 0.5.0
[INFO] tweaked toml for crates.io crate comprehensive_warm_channels 0.5.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate comprehensive_warm_channels 0.5.0 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 comprehensive_warm_channels 0.5.0 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] 94040b94c3c83a4c9da6f99cdf9881dc959d23a5916b9fd114b41d8e018a00ae
[INFO] running `Command { std: "docker" "start" "-a" "94040b94c3c83a4c9da6f99cdf9881dc959d23a5916b9fd114b41d8e018a00ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "94040b94c3c83a4c9da6f99cdf9881dc959d23a5916b9fd114b41d8e018a00ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94040b94c3c83a4c9da6f99cdf9881dc959d23a5916b9fd114b41d8e018a00ae", kill_on_drop: false }`
[INFO] [stdout] 94040b94c3c83a4c9da6f99cdf9881dc959d23a5916b9fd114b41d8e018a00ae
[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] 344ca2f81efd9648f1242c02d7a05ad2cdd795a0b374bdce8a82b1b4ebba2ad3
[INFO] running `Command { std: "docker" "start" "-a" "344ca2f81efd9648f1242c02d7a05ad2cdd795a0b374bdce8a82b1b4ebba2ad3", kill_on_drop: false }`
[INFO] [stderr]     Checking critical-section v1.2.0
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[INFO] [stderr]     Checking warm_channels v0.3.0
[INFO] [stderr]     Checking comprehensive_warm_channels v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<Arc<WarmChannelsDiag>, Infallible>
[INFO] [stdout]   --> src/lib.rs:60:54
[INFO] [stdout]    |
[INFO] [stdout] 60 |       ) -> Result<Arc<Self>, std::convert::Infallible> {
[INFO] [stdout]    |  ______________________________________________________^
[INFO] [stdout] 61 | |         Ok(Arc::new(Self(a)))
[INFO] [stdout] 62 | |     }
[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<Arc<WarmChannelsDiag>, Infallible>
[INFO] [stdout]   --> src/lib.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         Ok(Arc::new(Self(a)))
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `comprehensive_warm_channels` (lib) due to 2 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<Arc<WarmChannelsDiag>, Infallible>
[INFO] [stdout]   --> src/lib.rs:60:54
[INFO] [stdout]    |
[INFO] [stdout] 60 |       ) -> Result<Arc<Self>, std::convert::Infallible> {
[INFO] [stdout]    |  ______________________________________________________^
[INFO] [stdout] 61 | |         Ok(Arc::new(Self(a)))
[INFO] [stdout] 62 | |     }
[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<Arc<WarmChannelsDiag>, Infallible>
[INFO] [stdout]   --> src/lib.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         Ok(Arc::new(Self(a)))
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `comprehensive_warm_channels` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "344ca2f81efd9648f1242c02d7a05ad2cdd795a0b374bdce8a82b1b4ebba2ad3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "344ca2f81efd9648f1242c02d7a05ad2cdd795a0b374bdce8a82b1b4ebba2ad3", kill_on_drop: false }`
[INFO] [stdout] 344ca2f81efd9648f1242c02d7a05ad2cdd795a0b374bdce8a82b1b4ebba2ad3
