[INFO] fetching crate dummy 0.3.3...
[INFO] checking dummy-0.3.3 against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] extracting crate dummy 0.3.3 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate dummy 0.3.3 on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dummy 0.3.3
[INFO] finished tweaking crates.io crate dummy 0.3.3
[INFO] tweaked toml for crates.io crate dummy 0.3.3 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 07f3a0af8b35d61beaf9ff4ffcb8d146f89e17a08dada3d0de3886ae050f40c4
[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" "07f3a0af8b35d61beaf9ff4ffcb8d146f89e17a08dada3d0de3886ae050f40c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07f3a0af8b35d61beaf9ff4ffcb8d146f89e17a08dada3d0de3886ae050f40c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07f3a0af8b35d61beaf9ff4ffcb8d146f89e17a08dada3d0de3886ae050f40c4", kill_on_drop: false }`
[INFO] [stdout] 07f3a0af8b35d61beaf9ff4ffcb8d146f89e17a08dada3d0de3886ae050f40c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5d0db7a86ecfbec9a6f8e9baa73fa783cb098be49289f6517022520b3ba28ae0
[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" "5d0db7a86ecfbec9a6f8e9baa73fa783cb098be49289f6517022520b3ba28ae0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]     Checking quote v1.0.7
[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 dummy v0.3.3 (/opt/rustwide/workdir)
[INFO] [stdout] error: pattern requires `..` due to inaccessible fields
[INFO] [stdout]   --> src/lib.rs:51:36
[INFO] [stdout]    |
[INFO] [stdout] 51 |           darling::ast::Data::Struct(darling::ast::Fields {
[INFO] [stdout]    |  ____________________________________^
[INFO] [stdout] 52 | |             ref fields,
[INFO] [stdout] 53 | |             ref style,
[INFO] [stdout] 54 | |         }) => match style {
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout] help: ignore the inaccessible and unused fields
[INFO] [stdout]    |
[INFO] [stdout] 53 |             ref style, ..,
[INFO] [stdout]    |                      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: pattern requires `..` due to inaccessible fields
[INFO] [stdout]   --> src/lib.rs:51:36
[INFO] [stdout]    |
[INFO] [stdout] 51 |           darling::ast::Data::Struct(darling::ast::Fields {
[INFO] [stdout]    |  ____________________________________^
[INFO] [stdout] 52 | |             ref fields,
[INFO] [stdout] 53 | |             ref style,
[INFO] [stdout] 54 | |         }) => match style {
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout] help: ignore the inaccessible and unused fields
[INFO] [stdout]    |
[INFO] [stdout] 53 |             ref style, ..,
[INFO] [stdout]    |                      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dummy`
[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: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "5d0db7a86ecfbec9a6f8e9baa73fa783cb098be49289f6517022520b3ba28ae0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d0db7a86ecfbec9a6f8e9baa73fa783cb098be49289f6517022520b3ba28ae0", kill_on_drop: false }`
[INFO] [stdout] 5d0db7a86ecfbec9a6f8e9baa73fa783cb098be49289f6517022520b3ba28ae0