[INFO] fetching crate rtl8139-rs 0.1.2...
[INFO] checking rtl8139-rs-0.1.2 against try#3d9fdbff4f377de96b3a51174e7a64086bee9a5c for pr-81477
[INFO] extracting crate rtl8139-rs 0.1.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate rtl8139-rs 0.1.2 on toolchain 3d9fdbff4f377de96b3a51174e7a64086bee9a5c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rtl8139-rs 0.1.2
[INFO] finished tweaking crates.io crate rtl8139-rs 0.1.2
[INFO] tweaked toml for crates.io crate rtl8139-rs 0.1.2 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded conquer-util v0.3.0
[INFO] [stderr]   Downloaded conquer-once v0.3.2
[INFO] [stderr]   Downloaded spin v0.7.1
[INFO] [stderr]   Downloaded bit_field v0.9.0
[INFO] [stderr]   Downloaded x86_64 v0.13.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c50de162da04a70612f55955f5e625547a5e71badab8a36410127f56379a2db2
[INFO] running `Command { std: "docker" "start" "-a" "c50de162da04a70612f55955f5e625547a5e71badab8a36410127f56379a2db2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c50de162da04a70612f55955f5e625547a5e71badab8a36410127f56379a2db2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c50de162da04a70612f55955f5e625547a5e71badab8a36410127f56379a2db2", kill_on_drop: false }`
[INFO] [stdout] c50de162da04a70612f55955f5e625547a5e71badab8a36410127f56379a2db2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c38c6dffe05ed262b9dd7c086c9c7a7657c9f119f8d396c83c7956b7dd96e714
[INFO] running `Command { std: "docker" "start" "-a" "c38c6dffe05ed262b9dd7c086c9c7a7657c9f119f8d396c83c7956b7dd96e714", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-task v0.3.15
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]    Compiling crossbeam-queue v0.3.2
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling x86_64 v0.13.6
[INFO] [stderr]     Checking futures-sink v0.3.15
[INFO] [stderr]     Checking conquer-util v0.3.0
[INFO] [stderr]     Checking spin v0.7.1
[INFO] [stderr]     Checking crossbeam-utils v0.8.5
[INFO] [stderr]     Checking conquer-once v0.3.2
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/x86_64-0.13.6/src/lib.rs:5:43
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![cfg_attr(feature = "const_fn", feature(const_fn))] // Needed for generic access to associated consts
[INFO] [stdout]   |                                           ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `x86_64`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c38c6dffe05ed262b9dd7c086c9c7a7657c9f119f8d396c83c7956b7dd96e714", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c38c6dffe05ed262b9dd7c086c9c7a7657c9f119f8d396c83c7956b7dd96e714", kill_on_drop: false }`
[INFO] [stdout] c38c6dffe05ed262b9dd7c086c9c7a7657c9f119f8d396c83c7956b7dd96e714