[INFO] fetching crate pmw1 0.2.0...
[INFO] testing pmw1-0.2.0 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate pmw1 0.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate pmw1 0.2.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0/source/rust-toolchain
[INFO] started tweaking crates.io crate pmw1 0.2.0
[INFO] finished tweaking crates.io crate pmw1 0.2.0
[INFO] tweaked toml for crates.io crate pmw1 0.2.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cd6c6db96638860b2ae0b17e7d452f8b39a35e82108b4ddb0ad94705c5ded3fc
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "cd6c6db96638860b2ae0b17e7d452f8b39a35e82108b4ddb0ad94705c5ded3fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd6c6db96638860b2ae0b17e7d452f8b39a35e82108b4ddb0ad94705c5ded3fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd6c6db96638860b2ae0b17e7d452f8b39a35e82108b4ddb0ad94705c5ded3fc", kill_on_drop: false }`
[INFO] [stdout] cd6c6db96638860b2ae0b17e7d452f8b39a35e82108b4ddb0ad94705c5ded3fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fb012e5a5a1b87d5008508a16dcb7a1a430ea8de901a2837954dd7bd9380af6d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fb012e5a5a1b87d5008508a16dcb7a1a430ea8de901a2837954dd7bd9380af6d", kill_on_drop: false }`
[INFO] [stderr]    Compiling pmw1 v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![feature(asm)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![feature(cell_update)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid register `rbx`: rbx is used internally by LLVM and cannot be used as an operand for inline asm
[INFO] [stdout]    --> src/codec.rs:464:9
[INFO] [stdout]     |
[INFO] [stdout] 464 |         out("rbx") _,
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid register `rbx`: rbx is used internally by LLVM and cannot be used as an operand for inline asm
[INFO] [stdout]    --> src/codec.rs:650:29
[INFO] [stdout]     |
[INFO] [stdout] 650 | ...                   out("rbx") i1);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pmw1` due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "fb012e5a5a1b87d5008508a16dcb7a1a430ea8de901a2837954dd7bd9380af6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb012e5a5a1b87d5008508a16dcb7a1a430ea8de901a2837954dd7bd9380af6d", kill_on_drop: false }`
[INFO] [stdout] fb012e5a5a1b87d5008508a16dcb7a1a430ea8de901a2837954dd7bd9380af6d
