[INFO] fetching crate x86test 0.0.5...
[INFO] testing x86test-0.0.5 against 1.91.0 for beta-1.92-2
[INFO] extracting crate x86test 0.0.5 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate x86test 0.0.5
[INFO] finished tweaking crates.io crate x86test 0.0.5
[INFO] tweaked toml for crates.io crate x86test 0.0.5 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate x86test 0.0.5 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 46 packages to latest compatible versions
[INFO] [stderr]       Adding klogger v0.0.10 (available: v0.0.16)
[INFO] [stderr]       Adding x86 v0.47.0 (available: v0.52.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded termcodes v0.0.1
[INFO] [stderr]   Downloaded errno v0.1.8
[INFO] [stderr]   Downloaded x86test-types v0.0.5
[INFO] [stderr]   Downloaded klogger v0.0.10
[INFO] [stderr]   Downloaded mmap v0.1.1
[INFO] [stderr]   Downloaded kvm-sys v0.3.0
[INFO] [stderr]   Downloaded memmap v0.2.3
[INFO] [stderr]   Downloaded x86test-macro v0.0.5
[INFO] [stderr]   Downloaded x86 v0.47.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 159e692edf712ce0d931a8ca6759a5d3d04a78be7f2a5beaf03dc7fb00877f12
[INFO] running `Command { std: "docker" "start" "-a" "159e692edf712ce0d931a8ca6759a5d3d04a78be7f2a5beaf03dc7fb00877f12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "159e692edf712ce0d931a8ca6759a5d3d04a78be7f2a5beaf03dc7fb00877f12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "159e692edf712ce0d931a8ca6759a5d3d04a78be7f2a5beaf03dc7fb00877f12", kill_on_drop: false }`
[INFO] [stdout] 159e692edf712ce0d931a8ca6759a5d3d04a78be7f2a5beaf03dc7fb00877f12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c116684e48ab8ff0ebab1f0b59d7277731a82bfe7f3aa2cfe59faa43eff04192
[INFO] running `Command { std: "docker" "start" "-a" "c116684e48ab8ff0ebab1f0b59d7277731a82bfe7f3aa2cfe59faa43eff04192", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling x86 v0.47.0
[INFO] [stderr]    Compiling raw-cpuid v10.7.0
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling bit_field v0.10.3
[INFO] [stderr]    Compiling generic-array v0.12.4
[INFO] [stderr]    Compiling generic-array v0.13.3
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling heapless v0.5.6
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling hash32 v0.1.1
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling as-slice v0.1.5
[INFO] [stderr]    Compiling errno v0.1.8
[INFO] [stderr]    Compiling fs2 v0.2.5
[INFO] [stderr]    Compiling termcodes v0.0.1
[INFO] [stderr]    Compiling libc v0.1.12
[INFO] [stderr]    Compiling memmap v0.2.3
[INFO] [stderr]    Compiling kvm-sys v0.3.0
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling mmap v0.1.1
[INFO] [stderr]    Compiling x86test-types v0.0.5
[INFO] [stderr]    Compiling klogger v0.0.10
[INFO] [stderr]    Compiling x86test-macro v0.0.5
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/x86test-macro-0.0.5/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(proc_macro_diagnostic)]
[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 `x86test-macro` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "c116684e48ab8ff0ebab1f0b59d7277731a82bfe7f3aa2cfe59faa43eff04192", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c116684e48ab8ff0ebab1f0b59d7277731a82bfe7f3aa2cfe59faa43eff04192", kill_on_drop: false }`
[INFO] [stdout] c116684e48ab8ff0ebab1f0b59d7277731a82bfe7f3aa2cfe59faa43eff04192