[INFO] fetching crate from_variants_impl 0.5.0...
[INFO] checking from_variants_impl-0.5.0 against try#b2f80f6008cdafc35b4472bd46afa16cc6b0cd63 for pr-79470
[INFO] extracting crate from_variants_impl 0.5.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate from_variants_impl 0.5.0 on toolchain b2f80f6008cdafc35b4472bd46afa16cc6b0cd63
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate from_variants_impl 0.5.0
[INFO] finished tweaking crates.io crate from_variants_impl 0.5.0
[INFO] tweaked toml for crates.io crate from_variants_impl 0.5.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "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] e20c6a3360c1f983d7022e4ffa05fedeaac82f9e380046fff92f408944d4a542
[INFO] running `Command { std: "docker" "start" "-a" "e20c6a3360c1f983d7022e4ffa05fedeaac82f9e380046fff92f408944d4a542", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e20c6a3360c1f983d7022e4ffa05fedeaac82f9e380046fff92f408944d4a542", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e20c6a3360c1f983d7022e4ffa05fedeaac82f9e380046fff92f408944d4a542", kill_on_drop: false }`
[INFO] [stdout] e20c6a3360c1f983d7022e4ffa05fedeaac82f9e380046fff92f408944d4a542
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=forbid" "-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" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d20a7d8b41ae6aaad833a0f8a41166289806ddf10ad68b88dc781c5ab03dca33
[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" "d20a7d8b41ae6aaad833a0f8a41166289806ddf10ad68b88dc781c5ab03dca33", kill_on_drop: false }`
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]     Checking ident_case v1.0.1
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]     Checking quote v1.0.7
[INFO] [stderr]     Checking pretty_assertions v0.6.1
[INFO] [stderr]     Checking darling_core v0.10.3
[INFO] [stderr]    Compiling darling_macro v0.10.3
[INFO] [stderr]     Checking darling v0.10.3
[INFO] [stderr]     Checking from_variants_impl v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: cannot construct `darling::ast::Fields<_>` with struct literal syntax due to inaccessible fields
[INFO] [stdout]   --> src/parser.rs:93:21
[INFO] [stdout]    |
[INFO] [stdout] 93 |             fields: Fields {
[INFO] [stdout]    |                     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `from_variants_impl`
[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] [stdout] error: cannot construct `darling::ast::Fields<_>` with struct literal syntax due to inaccessible fields
[INFO] [stdout]   --> src/parser.rs:93:21
[INFO] [stdout]    |
[INFO] [stdout] 93 |             fields: Fields {
[INFO] [stdout]    |                     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d20a7d8b41ae6aaad833a0f8a41166289806ddf10ad68b88dc781c5ab03dca33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d20a7d8b41ae6aaad833a0f8a41166289806ddf10ad68b88dc781c5ab03dca33", kill_on_drop: false }`
[INFO] [stdout] d20a7d8b41ae6aaad833a0f8a41166289806ddf10ad68b88dc781c5ab03dca33