[INFO] fetching crate vgtk-macros 0.3.0...
[INFO] checking vgtk-macros-0.3.0 against master#4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 for pr-83744
[INFO] extracting crate vgtk-macros 0.3.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate vgtk-macros 0.3.0 on toolchain 4fa76a4a7742bb9c1febe33019f5a9e7e4839a65
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "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" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "fetch" "--locked" "--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-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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b2177253795755e6b830d2660cc8598ad22c80d230a6ad8b27fc6ede099c7e0
[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" "0b2177253795755e6b830d2660cc8598ad22c80d230a6ad8b27fc6ede099c7e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b2177253795755e6b830d2660cc8598ad22c80d230a6ad8b27fc6ede099c7e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b2177253795755e6b830d2660cc8598ad22c80d230a6ad8b27fc6ede099c7e0", kill_on_drop: false }`
[INFO] [stdout] 0b2177253795755e6b830d2660cc8598ad22c80d230a6ad8b27fc6ede099c7e0
[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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1a8c8515aae8d6728b6859a86d84322f8bb3c7613cc5d501e45b2a253a69542a
[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" "1a8c8515aae8d6728b6859a86d84322f8bb3c7613cc5d501e45b2a253a69542a", kill_on_drop: false }`
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling regex-syntax v0.6.23
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling itertools v0.10.0
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling string_cache v0.8.1
[INFO] [stderr]     Checking proc-macro2 v1.0.26
[INFO] [stderr]     Checking lalrpop-util v0.19.5
[INFO] [stderr]    Compiling ena v0.14.0
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling ascii-canvas v2.0.0
[INFO] [stderr]    Compiling regex v1.4.5
[INFO] [stderr]    Compiling lalrpop v0.19.5
[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-5412299f8e6e0732/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-5412299f8e6e0732/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-5412299f8e6e0732/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-5412299f8e6e0732/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" "1a8c8515aae8d6728b6859a86d84322f8bb3c7613cc5d501e45b2a253a69542a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a8c8515aae8d6728b6859a86d84322f8bb3c7613cc5d501e45b2a253a69542a", kill_on_drop: false }`
[INFO] [stdout] 1a8c8515aae8d6728b6859a86d84322f8bb3c7613cc5d501e45b2a253a69542a