[INFO] fetching crate swc_ecma_minifier 0.27.2...
[INFO] testing swc_ecma_minifier-0.27.2 against 1.55.0 for beta-1.56-1
[INFO] extracting crate swc_ecma_minifier 0.27.2 into /workspace/builds/worker-99/source
[INFO] validating manifest of crates.io crate swc_ecma_minifier 0.27.2 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_minifier 0.27.2
[INFO] finished tweaking crates.io crate swc_ecma_minifier 0.27.2
[INFO] tweaked toml for crates.io crate swc_ecma_minifier 0.27.2 written to /workspace/builds/worker-99/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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] 4c91aa9359d6be4b37c916e31230ca533bf421e3265158df7a0421550f76ee7d
[INFO] running `Command { std: "docker" "start" "-a" "4c91aa9359d6be4b37c916e31230ca533bf421e3265158df7a0421550f76ee7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c91aa9359d6be4b37c916e31230ca533bf421e3265158df7a0421550f76ee7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c91aa9359d6be4b37c916e31230ca533bf421e3265158df7a0421550f76ee7d", kill_on_drop: false }`
[INFO] [stdout] 4c91aa9359d6be4b37c916e31230ca533bf421e3265158df7a0421550f76ee7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec16f098982719ea959d5eabe225faf04b1a8ad0220f148f0a415030086ab6db
[INFO] running `Command { std: "docker" "start" "-a" "ec16f098982719ea959d5eabe225faf04b1a8ad0220f148f0a415030086ab6db", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.65
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling unicode-bidi v0.3.6
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling scoped-tls v1.0.0
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling base64 v0.11.0
[INFO] [stderr]    Compiling retain_mut v0.1.3
[INFO] [stderr]    Compiling if_chain v1.0.2
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]    Compiling tinyvec v1.3.1
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling owning_ref v0.4.1
[INFO] [stderr]    Compiling ahash v0.7.4
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling dashmap v4.0.2
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling unicode-normalization v0.1.19
[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]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling string_cache_codegen v0.5.1
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling lexical v5.2.2
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr]    Compiling swc_atoms v0.2.7
[INFO] [stderr]    Compiling pmutil v0.5.3
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling swc_macros_common v0.3.3
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling swc_visit_macros v0.2.3
[INFO] [stderr]    Compiling from_variant v0.1.3
[INFO] [stderr]    Compiling swc_eq_ignore_macros v0.1.0
[INFO] [stderr]    Compiling is-macro v0.1.9
[INFO] [stderr]    Compiling string_enum v0.3.1
[INFO] [stderr]    Compiling enum_kind v0.2.1
[INFO] [stderr]    Compiling phf_macros v0.8.0
[INFO] [stderr]    Compiling swc_ecma_codegen_macros v0.5.2
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling ast_node v0.7.3
[INFO] [stderr]    Compiling phf v0.8.0
[INFO] [stderr]    Compiling swc_visit v0.2.6
[INFO] [stderr]    Compiling string_cache v0.8.1
[INFO] [stderr]    Compiling serde_regex v1.1.0
[INFO] [stderr]    Compiling sourcemap v6.0.1
[INFO] [stderr]    Compiling swc_common v0.12.0
[INFO] [stderr]    Compiling swc_ecma_ast v0.52.0
[INFO] [stderr]    Compiling swc_ecma_visit v0.38.1
[INFO] [stderr]    Compiling swc_ecma_parser v0.70.2
[INFO] [stderr]    Compiling swc_ecma_utils v0.44.2
[INFO] [stderr]    Compiling swc_ecma_transforms_base v0.31.1
[INFO] [stderr]    Compiling swc_ecma_codegen v0.70.2
[INFO] [stderr]    Compiling swc_ecma_transforms_optimization v0.41.1
[INFO] [stderr]    Compiling swc_ecma_transforms v0.71.1
[INFO] [stderr]    Compiling swc_ecma_minifier v0.27.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 38s
[INFO] running `Command { std: "docker" "inspect" "ec16f098982719ea959d5eabe225faf04b1a8ad0220f148f0a415030086ab6db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec16f098982719ea959d5eabe225faf04b1a8ad0220f148f0a415030086ab6db", kill_on_drop: false }`
[INFO] [stdout] ec16f098982719ea959d5eabe225faf04b1a8ad0220f148f0a415030086ab6db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd7768b5a57df023b781b0c247ddd230c37f177f3f90111eff318179348a2448
[INFO] running `Command { std: "docker" "start" "-a" "fd7768b5a57df023b781b0c247ddd230c37f177f3f90111eff318179348a2448", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]    Compiling anyhow v1.0.43
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling cty v0.2.1
[INFO] [stderr]    Compiling difference v2.0.0
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling relative-path v1.5.0
[INFO] [stderr]    Compiling diff v0.1.12
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling pretty_assertions v0.6.1
[INFO] [stderr]    Compiling pretty_assertions v0.7.2
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling testing_macros v0.2.2
[INFO] [stderr]    Compiling mimalloc-rust-sys v1.7.2
[INFO] [stderr]    Compiling mimalloc-rust v0.1.1
[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" "fd7768b5a57df023b781b0c247ddd230c37f177f3f90111eff318179348a2448", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd7768b5a57df023b781b0c247ddd230c37f177f3f90111eff318179348a2448", kill_on_drop: false }`
[INFO] [stdout] fd7768b5a57df023b781b0c247ddd230c37f177f3f90111eff318179348a2448