[INFO] fetching crate shovel 0.1.0...
[INFO] checking shovel-0.1.0 against 1.95.0 for pr-155915
[INFO] extracting crate shovel 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate shovel 0.1.0
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate shovel 0.1.0
[INFO] tweaked toml for crates.io crate shovel 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate shovel 0.1.0 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 shovel 0.1.0 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unwind-sys v0.1.4
[INFO] [stderr]   Downloaded foreign-types-macros v0.2.3
[INFO] [stderr]   Downloaded foreign-types-shared v0.3.1
[INFO] [stderr]   Downloaded unicode-ident v1.0.22
[INFO] [stderr]   Downloaded foreign-types v0.5.0
[INFO] [stderr]   Downloaded unwind v0.4.2
[INFO] [stderr]   Downloaded shovel_macros v0.1.0
[INFO] [stderr]   Downloaded syn v2.0.114
[INFO] [stderr]   Downloaded libc v0.2.180
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 49222f13fc12d89e45d616836de1e4091dac5e67917d67add4c54a45af24d73c
[INFO] running `Command { std: "docker" "start" "-a" "49222f13fc12d89e45d616836de1e4091dac5e67917d67add4c54a45af24d73c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "49222f13fc12d89e45d616836de1e4091dac5e67917d67add4c54a45af24d73c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49222f13fc12d89e45d616836de1e4091dac5e67917d67add4c54a45af24d73c", kill_on_drop: false }`
[INFO] [stdout] 49222f13fc12d89e45d616836de1e4091dac5e67917d67add4c54a45af24d73c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 58c22c5feaf9e6cea61d0c9d5286cf0c4baac9d1caf4ccbfa9c8470878a84688
[INFO] running `Command { std: "docker" "start" "-a" "58c22c5feaf9e6cea61d0c9d5286cf0c4baac9d1caf4ccbfa9c8470878a84688", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.44
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling pkg-config v0.3.32
[INFO] [stderr]    Compiling libc v0.2.180
[INFO] [stderr]     Checking foreign-types-shared v0.3.1
[INFO] [stderr]    Compiling unwind v0.4.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling unwind-sys v0.1.4
[INFO] [stderr]    Compiling syn v2.0.114
[INFO] [stderr]    Compiling foreign-types-macros v0.2.3
[INFO] [stderr]    Compiling shovel_macros v0.1.0
[INFO] [stderr]     Checking foreign-types v0.5.0
[INFO] [stderr]     Checking shovel v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> examples/no-std-adder.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | #![feature(lang_items, core_intrinsics, rustc_private)]
[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 `shovel` (example "no-std-adder") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "58c22c5feaf9e6cea61d0c9d5286cf0c4baac9d1caf4ccbfa9c8470878a84688", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58c22c5feaf9e6cea61d0c9d5286cf0c4baac9d1caf4ccbfa9c8470878a84688", kill_on_drop: false }`
[INFO] [stdout] 58c22c5feaf9e6cea61d0c9d5286cf0c4baac9d1caf4ccbfa9c8470878a84688
