[INFO] crate ast_node 0.4.2 is already in cache
[INFO] testing ast_node-0.4.2 against 1.38.0 for beta-1.39-1
[INFO] extracting crate ast_node 0.4.2 into work/builds/worker-0/source
[INFO] validating manifest of crates.io crate ast_node 0.4.2 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate ast_node 0.4.2
[INFO] finished tweaking crates.io crate ast_node 0.4.2
[INFO] tweaked toml for crates.io crate ast_node 0.4.2 written to work/builds/worker-0/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 92082c7c55fe63d95fb697156c5d804d6ba58497cc88d84ea52b1c10187f51be
[INFO] running `"docker" "start" "-a" "92082c7c55fe63d95fb697156c5d804d6ba58497cc88d84ea52b1c10187f51be"`
[INFO] [stderr]    Compiling pmutil v0.3.0
[INFO] [stderr]    Compiling swc_macros_common v0.2.0
[INFO] [stderr]    Compiling ast_node v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/spanned.rs:80:29
[INFO] [stderr]    |
[INFO] [stderr] 80 |     fn simple_field(field: &ToTokens) -> Box<Expr> {
[INFO] [stderr]    |                             ^^^^^^^^ help: use `dyn`: `dyn ToTokens`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.61s
[INFO] running `"docker" "inspect" "92082c7c55fe63d95fb697156c5d804d6ba58497cc88d84ea52b1c10187f51be"`
[INFO] running `"docker" "rm" "-f" "92082c7c55fe63d95fb697156c5d804d6ba58497cc88d84ea52b1c10187f51be"`
[INFO] [stdout] 92082c7c55fe63d95fb697156c5d804d6ba58497cc88d84ea52b1c10187f51be
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 20608e317e99954d8a9f417cc463ff228bdf312db6fc78d9158d3540dfc772a4
[INFO] running `"docker" "start" "-a" "20608e317e99954d8a9f417cc463ff228bdf312db6fc78d9158d3540dfc772a4"`
[INFO] [stderr]    Compiling ast_node v0.4.2
[INFO] [stderr]    Compiling swc_common v0.3.1
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/swc_common-0.3.1/src/lib.rs:1:31
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![cfg_attr(feature = "fold", feature(specialization))]
[INFO] [stderr]   |                               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `swc_common`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "20608e317e99954d8a9f417cc463ff228bdf312db6fc78d9158d3540dfc772a4"`
[INFO] running `"docker" "rm" "-f" "20608e317e99954d8a9f417cc463ff228bdf312db6fc78d9158d3540dfc772a4"`
[INFO] [stdout] 20608e317e99954d8a9f417cc463ff228bdf312db6fc78d9158d3540dfc772a4