[INFO] fetching crate alef 0.0.1-alpha...
[INFO] testing alef-0.0.1-alpha against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate alef 0.0.1-alpha into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate alef 0.0.1-alpha on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate alef 0.0.1-alpha
[INFO] finished tweaking crates.io crate alef 0.0.1-alpha
[INFO] tweaked toml for crates.io crate alef 0.0.1-alpha written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded swc_eq_ignore_macros v0.1.0
[INFO] [stderr]   Downloaded swc_ecma_visit v0.22.0
[INFO] [stderr]   Downloaded jsdoc v0.12.0
[INFO] [stderr]   Downloaded swc_ecma_utils v0.26.0
[INFO] [stderr]   Downloaded swc_ecmascript v0.16.1
[INFO] [stderr]   Downloaded swc_common v0.10.8
[INFO] [stderr]   Downloaded swc_ecma_ast v0.36.2
[INFO] [stderr]   Downloaded swc_ecma_parser v0.44.1
[INFO] [stderr]   Downloaded swc_visit_macros v0.2.2
[INFO] [stderr]   Downloaded swc_ecma_transforms v0.31.2
[INFO] [stderr]   Downloaded swc_ecma_codegen_macros v0.5.1
[INFO] [stderr]   Downloaded swc_ecma_codegen v0.42.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0fba42248c1717e8d009700142776abfd7d7fce22f8261879dbb49958ecab31f
[INFO] running `Command { std: "docker" "start" "-a" "0fba42248c1717e8d009700142776abfd7d7fce22f8261879dbb49958ecab31f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0fba42248c1717e8d009700142776abfd7d7fce22f8261879dbb49958ecab31f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fba42248c1717e8d009700142776abfd7d7fce22f8261879dbb49958ecab31f", kill_on_drop: false }`
[INFO] [stdout] 0fba42248c1717e8d009700142776abfd7d7fce22f8261879dbb49958ecab31f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 816f2d105f41b12dea2f2fec490e3316222c9966cd7250dcafdf801a58138567
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "816f2d105f41b12dea2f2fec490e3316222c9966cd7250dcafdf801a58138567", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling if_chain v1.0.1
[INFO] [stderr]    Compiling base64 v0.11.0
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling scoped-tls v1.0.0
[INFO] [stderr]    Compiling lexical-core v0.7.4
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling anyhow v1.0.37
[INFO] [stderr]    Compiling retain_mut v0.1.1
[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 indexmap v1.6.1
[INFO] [stderr]    Compiling owning_ref v0.4.1
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling string_cache_codegen v0.5.1
[INFO] [stderr]    Compiling ordered-float v1.1.1
[INFO] [stderr]    Compiling swc_atoms v0.2.5
[INFO] [stderr]    Compiling pmutil v0.5.3
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling swc_macros_common v0.3.1
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling swc_visit_macros v0.2.2
[INFO] [stderr]    Compiling from_variant v0.1.2
[INFO] [stderr]    Compiling swc_eq_ignore_macros v0.1.0
[INFO] [stderr]    Compiling enum_kind v0.2.0
[INFO] [stderr]    Compiling string_enum v0.3.0
[INFO] [stderr]    Compiling is-macro v0.1.8
[INFO] [stderr]    Compiling swc_ecma_parser_macros v0.4.1
[INFO] [stderr]    Compiling phf_macros v0.8.0
[INFO] [stderr]    Compiling swc_ecma_transforms_macros v0.1.1
[INFO] [stderr]    Compiling swc_ecma_codegen_macros v0.5.1
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling phf v0.8.0
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling ast_node v0.7.0
[INFO] [stderr]    Compiling swc_visit v0.2.2
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling string_cache v0.8.1
[INFO] [stderr]    Compiling sourcemap v6.0.1
[INFO] [stderr]    Compiling swc_common v0.10.8
[INFO] [stderr]    Compiling swc_ecma_ast v0.36.2
[INFO] [stderr]    Compiling jsdoc v0.12.0
[INFO] [stderr]    Compiling swc_ecma_visit v0.22.0
[INFO] [stderr]    Compiling swc_ecma_parser v0.44.1
[INFO] [stderr]    Compiling swc_ecma_utils v0.26.0
[INFO] [stderr]    Compiling swc_ecma_codegen v0.42.2
[INFO] [stderr]    Compiling swc_ecma_transforms v0.31.2
[INFO] [stderr]    Compiling swc_ecmascript v0.16.1
[INFO] [stderr]    Compiling alef v0.0.1-alpha (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `tpl`
[INFO] [stdout]  --> src/ast/css.rs:9:16
[INFO] [stdout]   |
[INFO] [stdout] 9 |   pub fn parse(tpl: &Tpl) -> Self {
[INFO] [stdout]   |                ^^^ help: if this is intentional, prefix it with an underscore: `_tpl`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `if_stmt`
[INFO] [stdout]   --> src/ast/jsx.rs:54:39
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub fn transform_condition(&self, if_stmt: IfStmt) -> Stmt {
[INFO] [stdout]    |                                       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_if_stmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `export_default` is assigned to, but never used
[INFO] [stdout]    --> src/ast/transformer.rs:163:9
[INFO] [stdout]     |
[INFO] [stdout] 163 |     let mut export_default: Option<Expr> = None;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_export_default` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx_name`
[INFO] [stdout]    --> src/ast/transformer.rs:206:11
[INFO] [stdout]     |
[INFO] [stdout] 206 |           ctx_name,
[INFO] [stdout]     |           ^^^^^^^^ help: try ignoring the field: `ctx_name: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scope_idents`
[INFO] [stdout]    --> src/ast/transformer.rs:217:11
[INFO] [stdout]     |
[INFO] [stdout] 217 |           scope_idents,
[INFO] [stdout]     |           ^^^^^^^^^^^^ help: try ignoring the field: `scope_idents: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `statements`
[INFO] [stdout]    --> src/ast/transformer.rs:218:11
[INFO] [stdout]     |
[INFO] [stdout] 218 |           statements,
[INFO] [stdout]     |           ^^^^^^^^^^ help: try ignoring the field: `statements: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/ast/transformer.rs:220:53
[INFO] [stdout]     |
[INFO] [stdout] 220 |         Statement::SideEffect(SideEffectStatement { name, stmt }) => {}
[INFO] [stdout]     |                                                     ^^^^ help: try ignoring the field: `name: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stmt`
[INFO] [stdout]    --> src/ast/transformer.rs:220:59
[INFO] [stdout]     |
[INFO] [stdout] 220 |         Statement::SideEffect(SideEffectStatement { name, stmt }) => {}
[INFO] [stdout]     |                                                           ^^^^ help: try ignoring the field: `stmt: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `css`
[INFO] [stdout]    --> src/ast/transformer.rs:232:43
[INFO] [stdout]     |
[INFO] [stdout] 232 |         Statement::Style(StyleStatement { css }) => {}
[INFO] [stdout]     |                                           ^^^ help: try ignoring the field: `css: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `export_default` is never read
[INFO] [stdout]    --> src/ast/transformer.rs:233:56
[INFO] [stdout]     |
[INFO] [stdout] 233 |         Statement::Export(ExportStatement { expr }) => export_default = Some(expr),
[INFO] [stdout]     |                                                        ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `swc_ecma_transforms`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name swc_ecma_transforms --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/swc_ecma_transforms-0.31.2/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' -C metadata=fbcc052eba58501b -C extra-filename=-fbcc052eba58501b --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern inflector=/opt/rustwide/target/debug/deps/libinflector-701413e79e79a0d4.rmeta --extern arrayvec=/opt/rustwide/target/debug/deps/libarrayvec-f13f4f0dbb450543.rmeta --extern either=/opt/rustwide/target/debug/deps/libeither-bdbb982f7ccc1550.rmeta --extern fxhash=/opt/rustwide/target/debug/deps/libfxhash-c2bd72848bedb4c6.rmeta --extern indexmap=/opt/rustwide/target/debug/deps/libindexmap-ffbbf84de1e35400.rmeta --extern is_macro=/opt/rustwide/target/debug/deps/libis_macro-635cb36e4708fabc.so --extern jsdoc=/opt/rustwide/target/debug/deps/libjsdoc-c8a9b71ea12a6ac2.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-d6d50815b8652f33.rmeta --extern num_bigint=/opt/rustwide/target/debug/deps/libnum_bigint-104fa0718d9303ae.rmeta --extern once_cell=/opt/rustwide/target/debug/deps/libonce_cell-dc85fb7e1f85098c.rmeta --extern ordered_float=/opt/rustwide/target/debug/deps/libordered_float-875a1d8985bf4468.rmeta --extern phf=/opt/rustwide/target/debug/deps/libphf-bed4d061df463f0a.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-88a1e75c7e2bfbce.rmeta --extern retain_mut=/opt/rustwide/target/debug/deps/libretain_mut-819d7ea6605e0de3.rmeta --extern scoped_tls=/opt/rustwide/target/debug/deps/libscoped_tls-09a0f6df3274fe1f.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-52703ccfbe745e01.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-fd61a7c8dbfcd36f.rmeta --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-5ae1e2fa6e7c2ceb.rmeta --extern swc_atoms=/opt/rustwide/target/debug/deps/libswc_atoms-c1494b379c0455fe.rmeta --extern swc_common=/opt/rustwide/target/debug/deps/libswc_common-6c693af4cfe7fdeb.rmeta --extern swc_ecma_ast=/opt/rustwide/target/debug/deps/libswc_ecma_ast-fd9d78eed88c1d7c.rmeta --extern swc_ecma_parser=/opt/rustwide/target/debug/deps/libswc_ecma_parser-e02a3c4ea06c7a27.rmeta --extern swc_ecma_transforms_macros=/opt/rustwide/target/debug/deps/libswc_ecma_transforms_macros-b399c16d738af4c2.so --extern swc_ecma_utils=/opt/rustwide/target/debug/deps/libswc_ecma_utils-ff2fe45d4b2a6c24.rmeta --extern swc_ecma_visit=/opt/rustwide/target/debug/deps/libswc_ecma_visit-a0313adea13c58f0.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-5ee0227a60781e0f.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "816f2d105f41b12dea2f2fec490e3316222c9966cd7250dcafdf801a58138567", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "816f2d105f41b12dea2f2fec490e3316222c9966cd7250dcafdf801a58138567", kill_on_drop: false }`
[INFO] [stdout] 816f2d105f41b12dea2f2fec490e3316222c9966cd7250dcafdf801a58138567