[INFO] fetching crate vtables_derive 0.1.0...
[INFO] testing vtables_derive-0.1.0 against 1.54.0 for beta-1.55-1
[INFO] extracting crate vtables_derive 0.1.0 into /workspace/builds/worker-118/source
[INFO] validating manifest of crates.io crate vtables_derive 0.1.0 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate vtables_derive 0.1.0
[INFO] finished tweaking crates.io crate vtables_derive 0.1.0
[INFO] tweaked toml for crates.io crate vtables_derive 0.1.0 written to /workspace/builds/worker-118/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded vtables v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c77d73e9ee3b44bf73ee14983de14de5a08221511d3ca803744788320412e0e5
[INFO] running `Command { std: "docker" "start" "-a" "c77d73e9ee3b44bf73ee14983de14de5a08221511d3ca803744788320412e0e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c77d73e9ee3b44bf73ee14983de14de5a08221511d3ca803744788320412e0e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c77d73e9ee3b44bf73ee14983de14de5a08221511d3ca803744788320412e0e5", kill_on_drop: false }`
[INFO] [stdout] c77d73e9ee3b44bf73ee14983de14de5a08221511d3ca803744788320412e0e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef85833955160e8a3256fd5ee503888ee88dbdaa0af5ac0d1d055db2c8729d65
[INFO] running `Command { std: "docker" "start" "-a" "ef85833955160e8a3256fd5ee503888ee88dbdaa0af5ac0d1d055db2c8729d65", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling vtables_derive v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.17s
[INFO] running `Command { std: "docker" "inspect" "ef85833955160e8a3256fd5ee503888ee88dbdaa0af5ac0d1d055db2c8729d65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef85833955160e8a3256fd5ee503888ee88dbdaa0af5ac0d1d055db2c8729d65", kill_on_drop: false }`
[INFO] [stdout] ef85833955160e8a3256fd5ee503888ee88dbdaa0af5ac0d1d055db2c8729d65
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a3a8fe75c3c1a02735891cc6c669af7607fbc45440e6e619318bf48836c3783c
[INFO] running `Command { std: "docker" "start" "-a" "a3a8fe75c3c1a02735891cc6c669af7607fbc45440e6e619318bf48836c3783c", kill_on_drop: false }`
[INFO] [stderr]    Compiling vtables v0.1.0
[INFO] [stderr]    Compiling vtables_derive v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> tests/tests.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(abi_thiscall)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[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 E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vtables_derive`
[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" "a3a8fe75c3c1a02735891cc6c669af7607fbc45440e6e619318bf48836c3783c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3a8fe75c3c1a02735891cc6c669af7607fbc45440e6e619318bf48836c3783c", kill_on_drop: false }`
[INFO] [stdout] a3a8fe75c3c1a02735891cc6c669af7607fbc45440e6e619318bf48836c3783c
