[INFO] fetching crate vgtk-macros 0.3.0...
[INFO] checking vgtk-macros-0.3.0 against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] extracting crate vgtk-macros 0.3.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate vgtk-macros 0.3.0 on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate vgtk-macros 0.3.0
[INFO] finished tweaking crates.io crate vgtk-macros 0.3.0
[INFO] tweaked toml for crates.io crate vgtk-macros 0.3.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "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" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "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] 18e44b82dc51bf4444dcb5bce9d21f110639adbb40d827297595e71466546733
[INFO] running `Command { std: "docker" "start" "-a" "18e44b82dc51bf4444dcb5bce9d21f110639adbb40d827297595e71466546733", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18e44b82dc51bf4444dcb5bce9d21f110639adbb40d827297595e71466546733", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18e44b82dc51bf4444dcb5bce9d21f110639adbb40d827297595e71466546733", kill_on_drop: false }`
[INFO] [stdout] 18e44b82dc51bf4444dcb5bce9d21f110639adbb40d827297595e71466546733
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ff507fcca0d52a133521d73c4e8c402d78cdc0ac18ed4469f1bfb9004404a61f
[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" "ff507fcca0d52a133521d73c4e8c402d78cdc0ac18ed4469f1bfb9004404a61f", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling log v0.4.13
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling regex-syntax v0.6.22
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]     Checking proc-macro2 v1.0.24
[INFO] [stderr]    Compiling string_cache v0.8.1
[INFO] [stderr]    Compiling thread_local v1.1.2
[INFO] [stderr]     Checking quote v1.0.8
[INFO] [stderr]    Compiling ena v0.14.0
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling ascii-canvas v2.0.0
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking lalrpop-util v0.19.4
[INFO] [stderr]    Compiling lalrpop v0.19.4
[INFO] [stderr]    Compiling vgtk-macros v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: `extern crate` is not idiomatic in the new edition
[INFO] [stdout]   --> /opt/rustwide/target/debug/build/vgtk-macros-30f98c8387153ffa/out/grammar.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate core;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^ help: convert it to a `use`
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:2:9
[INFO] [stdout]    |
[INFO] [stdout] 2  | #![deny(rust_2018_idioms, unsafe_code)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_extern_crates)]` implied by `#[deny(rust_2018_idioms)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `extern crate` is not idiomatic in the new edition
[INFO] [stdout]   --> /opt/rustwide/target/debug/build/vgtk-macros-30f98c8387153ffa/out/grammar.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     extern crate core;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^ help: convert it to a `use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vgtk-macros`
[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: `extern crate` is not idiomatic in the new edition
[INFO] [stdout]   --> /opt/rustwide/target/debug/build/vgtk-macros-30f98c8387153ffa/out/grammar.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate core;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^ help: convert it to a `use`
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:2:9
[INFO] [stdout]    |
[INFO] [stdout] 2  | #![deny(rust_2018_idioms, unsafe_code)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_extern_crates)]` implied by `#[deny(rust_2018_idioms)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `extern crate` is not idiomatic in the new edition
[INFO] [stdout]   --> /opt/rustwide/target/debug/build/vgtk-macros-30f98c8387153ffa/out/grammar.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     extern crate core;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^ help: convert it to a `use`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ff507fcca0d52a133521d73c4e8c402d78cdc0ac18ed4469f1bfb9004404a61f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff507fcca0d52a133521d73c4e8c402d78cdc0ac18ed4469f1bfb9004404a61f", kill_on_drop: false }`
[INFO] [stdout] ff507fcca0d52a133521d73c4e8c402d78cdc0ac18ed4469f1bfb9004404a61f