[INFO] fetching crate compiler_builtins 0.1.139...
[INFO] checking compiler_builtins-0.1.139 against master#8549802939cd01111c46e34a7b67cb1933977af9 for pr-132712
[INFO] extracting crate compiler_builtins 0.1.139 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate compiler_builtins 0.1.139 on toolchain 8549802939cd01111c46e34a7b67cb1933977af9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8549802939cd01111c46e34a7b67cb1933977af9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate compiler_builtins 0.1.139
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate compiler_builtins 0.1.139
[INFO] tweaked toml for crates.io crate compiler_builtins 0.1.139 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate compiler_builtins 0.1.139 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" "+8549802939cd01111c46e34a7b67cb1933977af9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustc-std-workspace-core v1.0.0
[INFO] [stderr]   Downloaded cc v1.1.34
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+8549802939cd01111c46e34a7b67cb1933977af9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cbb7506c3ee294bfae40449dc8a5cfc5da77892664fdc8d2cf872fb43f185d71
[INFO] running `Command { std: "docker" "start" "-a" "cbb7506c3ee294bfae40449dc8a5cfc5da77892664fdc8d2cf872fb43f185d71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cbb7506c3ee294bfae40449dc8a5cfc5da77892664fdc8d2cf872fb43f185d71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbb7506c3ee294bfae40449dc8a5cfc5da77892664fdc8d2cf872fb43f185d71", kill_on_drop: false }`
[INFO] [stdout] cbb7506c3ee294bfae40449dc8a5cfc5da77892664fdc8d2cf872fb43f185d71
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+8549802939cd01111c46e34a7b67cb1933977af9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e2f3371251fb7dabef3ab9b49b081784f4db606f7610526aedeb74016779ecca
[INFO] running `Command { std: "docker" "start" "-a" "e2f3371251fb7dabef3ab9b49b081784f4db606f7610526aedeb74016779ecca", kill_on_drop: false }`
[INFO] [stderr]    Compiling compiler_builtins v0.1.139 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `panic_handler`
[INFO] [stdout]   --> examples/intrinsics.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | extern crate panic_handler;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `#[panic_handler]` function required, but not found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `compiler_builtins` (example "intrinsics") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "e2f3371251fb7dabef3ab9b49b081784f4db606f7610526aedeb74016779ecca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2f3371251fb7dabef3ab9b49b081784f4db606f7610526aedeb74016779ecca", kill_on_drop: false }`
[INFO] [stdout] e2f3371251fb7dabef3ab9b49b081784f4db606f7610526aedeb74016779ecca