[INFO] fetching crate thermocouple 0.1.3...
[INFO] checking thermocouple-0.1.3 against 1.95.0 for pr-155915
[INFO] extracting crate thermocouple 0.1.3 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate thermocouple 0.1.3
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate thermocouple 0.1.3
[INFO] tweaked toml for crates.io crate thermocouple 0.1.3 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate thermocouple 0.1.3 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate thermocouple 0.1.3 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 45f5c5c2eaa4ad223c545c8605c2dde7d35b0726120a36731a62d722e7e37ed2
[INFO] running `Command { std: "docker" "start" "-a" "45f5c5c2eaa4ad223c545c8605c2dde7d35b0726120a36731a62d722e7e37ed2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "45f5c5c2eaa4ad223c545c8605c2dde7d35b0726120a36731a62d722e7e37ed2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45f5c5c2eaa4ad223c545c8605c2dde7d35b0726120a36731a62d722e7e37ed2", kill_on_drop: false }`
[INFO] [stdout] 45f5c5c2eaa4ad223c545c8605c2dde7d35b0726120a36731a62d722e7e37ed2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f376a7a640d77a10d79ba58fad9a3539c81c0f1c7acc6fb1d5ab6dd51a5ac496
[INFO] running `Command { std: "docker" "start" "-a" "f376a7a640d77a10d79ba58fad9a3539c81c0f1c7acc6fb1d5ab6dd51a5ac496", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.1.4
[INFO] [stderr]     Checking thermocouple v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]   --> src/units.rs:11:24
[INFO] [stdout]    |
[INFO] [stdout] 11 |               #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 | / unit! {
[INFO] [stdout] 57 | |     Millivolts, millivolts =>
[INFO] [stdout] 58 | |         "{:.3}mV", "Unit of electric potential, 1/1000 of the SI
[INFO] [stdout] 59 | |  Base Unit Volt";
[INFO] [stdout] ...  |
[INFO] [stdout] 71 | |         "{:.1}ºRé", "Unit of thermodynamic temperature";
[INFO] [stdout] 72 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `default`, `extrapolate`, `f32`, `f64`, `k-type`, `libm`, and `use_serde`
[INFO] [stdout]    = help: consider adding `serde` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `unit` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `serde`
[INFO] [stdout]   --> src/units.rs:11:24
[INFO] [stdout]    |
[INFO] [stdout] 11 |               #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 | / unit! {
[INFO] [stdout] 57 | |     Millivolts, millivolts =>
[INFO] [stdout] 58 | |         "{:.3}mV", "Unit of electric potential, 1/1000 of the SI
[INFO] [stdout] 59 | |  Base Unit Volt";
[INFO] [stdout] ...  |
[INFO] [stdout] 71 | |         "{:.1}ºRé", "Unit of thermodynamic temperature";
[INFO] [stdout] 72 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected values for `feature` are: `default`, `extrapolate`, `f32`, `f64`, `k-type`, `libm`, and `use_serde`
[INFO] [stdout]    = help: consider adding `serde` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `unit` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> benches/bench.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `thermocouple` (bench "bench") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "f376a7a640d77a10d79ba58fad9a3539c81c0f1c7acc6fb1d5ab6dd51a5ac496", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f376a7a640d77a10d79ba58fad9a3539c81c0f1c7acc6fb1d5ab6dd51a5ac496", kill_on_drop: false }`
[INFO] [stdout] f376a7a640d77a10d79ba58fad9a3539c81c0f1c7acc6fb1d5ab6dd51a5ac496
