[INFO] fetching crate auxtools-impl 0.1.0...
[INFO] checking auxtools-impl-0.1.0 against master#836c31742687ba4e2f857b5b698e1e9e6b67619c for pr-81789
[INFO] extracting crate auxtools-impl 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate auxtools-impl 0.1.0 on toolchain 836c31742687ba4e2f857b5b698e1e9e6b67619c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate auxtools-impl 0.1.0
[INFO] finished tweaking crates.io crate auxtools-impl 0.1.0
[INFO] tweaked toml for crates.io crate auxtools-impl 0.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9a4ee3685b0500d4511d8c4b29f3b6fd3a652f8c127716ba8c7005c1015e23b6
[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" "9a4ee3685b0500d4511d8c4b29f3b6fd3a652f8c127716ba8c7005c1015e23b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a4ee3685b0500d4511d8c4b29f3b6fd3a652f8c127716ba8c7005c1015e23b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a4ee3685b0500d4511d8c4b29f3b6fd3a652f8c127716ba8c7005c1015e23b6", kill_on_drop: false }`
[INFO] [stdout] 9a4ee3685b0500d4511d8c4b29f3b6fd3a652f8c127716ba8c7005c1015e23b6
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53a97f06134f07ff7fece98099c0650d8d377ca9f04d5454e7f413ad4bc4cc48
[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" "53a97f06134f07ff7fece98099c0650d8d377ca9f04d5454e7f413ad4bc4cc48", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]     Checking unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.70
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]     Checking auxtools-impl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `FnArg`
[INFO] [stdout]  --> src/lib.rs:5:53
[INFO] [stdout]   |
[INFO] [stdout] 5 | use syn::{parse_macro_input, spanned::Spanned, Lit, FnArg};
[INFO] [stdout]   |                                                     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `FnArg`
[INFO] [stdout]  --> src/lib.rs:5:53
[INFO] [stdout]   |
[INFO] [stdout] 5 | use syn::{parse_macro_input, spanned::Spanned, Lit, FnArg};
[INFO] [stdout]   |                                                     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.29s
[INFO] running `Command { std: "docker" "inspect" "53a97f06134f07ff7fece98099c0650d8d377ca9f04d5454e7f413ad4bc4cc48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53a97f06134f07ff7fece98099c0650d8d377ca9f04d5454e7f413ad4bc4cc48", kill_on_drop: false }`
[INFO] [stdout] 53a97f06134f07ff7fece98099c0650d8d377ca9f04d5454e7f413ad4bc4cc48