[INFO] fetching crate swc_ecma_codegen 0.75.1...
[INFO] checking swc_ecma_codegen-0.75.1 against 1.55.0 for beta-1.56-3
[INFO] extracting crate swc_ecma_codegen 0.75.1 into /workspace/builds/worker-110/source
[INFO] validating manifest of crates.io crate swc_ecma_codegen 0.75.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate swc_ecma_codegen 0.75.1
[INFO] finished tweaking crates.io crate swc_ecma_codegen 0.75.1
[INFO] tweaked toml for crates.io crate swc_ecma_codegen 0.75.1 written to /workspace/builds/worker-110/source/Cargo.toml
[INFO] crate crates.io crate swc_ecma_codegen 0.75.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3591ae07a0473ea9894587e424c3aeb397d96d0f39b55047714d6e73af572661
[INFO] running `Command { std: "docker" "start" "-a" "3591ae07a0473ea9894587e424c3aeb397d96d0f39b55047714d6e73af572661", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3591ae07a0473ea9894587e424c3aeb397d96d0f39b55047714d6e73af572661", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3591ae07a0473ea9894587e424c3aeb397d96d0f39b55047714d6e73af572661", kill_on_drop: false }`
[INFO] [stdout] 3591ae07a0473ea9894587e424c3aeb397d96d0f39b55047714d6e73af572661
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f41940e57192dcc5a2840df82b4e933615976a05838bcf1e6250ea7b699d52b3
[INFO] running `Command { std: "docker" "start" "-a" "f41940e57192dcc5a2840df82b4e933615976a05838bcf1e6250ea7b699d52b3", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.65
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]     Checking precomputed-hash v0.1.1
[INFO] [stderr]     Checking new_debug_unreachable v1.0.4
[INFO] [stderr]     Checking base64 v0.11.0
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking if_chain v1.0.2
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]     Checking cty v0.2.2
[INFO] [stderr]     Checking typed-arena v2.0.1
[INFO] [stderr]    Compiling relative-path v1.5.0
[INFO] [stderr]     Checking diff v0.1.12
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking instant v0.1.11
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling mimalloc-rust-sys v1.7.2
[INFO] [stderr]    Compiling anyhow v1.0.44
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking dashmap v4.0.2
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]     Checking pretty_assertions v0.7.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]     Checking mimalloc-rust v0.1.1
[INFO] [stderr]    Compiling string_cache_codegen v0.5.1
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mimalloc-rust-0.1.1/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(allocator_api)]
[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 `mimalloc-rust` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "f41940e57192dcc5a2840df82b4e933615976a05838bcf1e6250ea7b699d52b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f41940e57192dcc5a2840df82b4e933615976a05838bcf1e6250ea7b699d52b3", kill_on_drop: false }`
[INFO] [stdout] f41940e57192dcc5a2840df82b4e933615976a05838bcf1e6250ea7b699d52b3
