[INFO] fetching crate computers 0.2.2...
[INFO] checking computers-0.2.2 against 3154cc1a3e6424e44f438a95007d043ed5ceaaf6 for pr-133502-30
[INFO] extracting crate computers 0.2.2 into /workspace/builds/worker-4-tc2/source
[INFO] removed /workspace/builds/worker-4-tc2/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-4-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate computers 0.2.2
[INFO] finished tweaking crates.io crate computers 0.2.2
[INFO] tweaked toml for crates.io crate computers 0.2.2 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate computers 0.2.2 on toolchain 3154cc1a3e6424e44f438a95007d043ed5ceaaf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3154cc1a3e6424e44f438a95007d043ed5ceaaf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate computers 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" "+3154cc1a3e6424e44f438a95007d043ed5ceaaf6" "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/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] b85fbfdd3d9b8076b3b7712c1ffb5917637a5311ab6a95ecb23151b5ffe59f21
[INFO] running `Command { std: "docker" "start" "b85fbfdd3d9b8076b3b7712c1ffb5917637a5311ab6a95ecb23151b5ffe59f21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b85fbfdd3d9b8076b3b7712c1ffb5917637a5311ab6a95ecb23151b5ffe59f21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "b85fbfdd3d9b8076b3b7712c1ffb5917637a5311ab6a95ecb23151b5ffe59f21" "/opt/rustwide/cargo-home/bin/cargo" "+3154cc1a3e6424e44f438a95007d043ed5ceaaf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b85fbfdd3d9b8076b3b7712c1ffb5917637a5311ab6a95ecb23151b5ffe59f21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "b85fbfdd3d9b8076b3b7712c1ffb5917637a5311ab6a95ecb23151b5ffe59f21" "/opt/rustwide/cargo-home/bin/cargo" "+3154cc1a3e6424e44f438a95007d043ed5ceaaf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.16
[INFO] [stderr]    Compiling find-msvc-tools v0.1.13
[INFO] [stderr]    Compiling cc v1.4.7
[INFO] [stderr]    Compiling ample v0.2.2
[INFO] [stderr]    Compiling userspace_build v0.2.2
[INFO] [stderr]    Compiling userspace v0.2.2
[INFO] [stderr]    Compiling computers v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `feature(generic_const_exprs)` is not supported with the next-generation trait solver
[INFO] [stdout]  --> src/entry.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(generic_const_exprs)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `-Znext-solver=globally` is currently enabled by default for testing
[INFO] [stdout]   = note: reverted the setting to `-Znext-solver=coherence` for this crate
[INFO] [stdout]   = note: the currently stable trait solver will be used for this crate
[INFO] [stdout]   = note: see issues #160895 <https://github.com/rust-lang/rust/issues/160895> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `computers` (bin "computers") due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "b85fbfdd3d9b8076b3b7712c1ffb5917637a5311ab6a95ecb23151b5ffe59f21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b85fbfdd3d9b8076b3b7712c1ffb5917637a5311ab6a95ecb23151b5ffe59f21", kill_on_drop: false }`
[INFO] [stdout] b85fbfdd3d9b8076b3b7712c1ffb5917637a5311ab6a95ecb23151b5ffe59f21
