[INFO] fetching crate multiconst_proc_macros 0.2.2...
[INFO] checking multiconst_proc_macros-0.2.2 against 28b6e691688c15cef4c60d9044274e7b84397870 for pr-162986
[INFO] extracting crate multiconst_proc_macros 0.2.2 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate multiconst_proc_macros 0.2.2
[INFO] finished tweaking crates.io crate multiconst_proc_macros 0.2.2
[INFO] tweaked toml for crates.io crate multiconst_proc_macros 0.2.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate multiconst_proc_macros 0.2.2 on toolchain 28b6e691688c15cef4c60d9044274e7b84397870
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+28b6e691688c15cef4c60d9044274e7b84397870" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+28b6e691688c15cef4c60d9044274e7b84397870" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 4 packages to highest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (available: v3.0.9)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+28b6e691688c15cef4c60d9044274e7b84397870" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 3c019213c29a0a87d32bd363fdeecb491a76e56c2cf43f88fd2948c97763bd24
[INFO] running `Command { std: "docker" "start" "3c019213c29a0a87d32bd363fdeecb491a76e56c2cf43f88fd2948c97763bd24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c019213c29a0a87d32bd363fdeecb491a76e56c2cf43f88fd2948c97763bd24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "3c019213c29a0a87d32bd363fdeecb491a76e56c2cf43f88fd2948c97763bd24" "/opt/rustwide/cargo-home/bin/cargo" "+28b6e691688c15cef4c60d9044274e7b84397870" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c019213c29a0a87d32bd363fdeecb491a76e56c2cf43f88fd2948c97763bd24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "3c019213c29a0a87d32bd363fdeecb491a76e56c2cf43f88fd2948c97763bd24" "/opt/rustwide/cargo-home/bin/cargo" "+28b6e691688c15cef4c60d9044274e7b84397870" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-ident v1.0.27
[INFO] [stderr]     Checking multiconst_proc_macros v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking proc-macro2 v1.0.107
[INFO] [stdout] warning: method `into_token_tree` is never used
[INFO] [stdout]    --> src/utils.rs:134:8
[INFO] [stdout]     |
[INFO] [stdout] 132 | pub(crate) trait TokenTreeExt: Sized {
[INFO] [stdout]     |                  ------------ method in this trait
[INFO] [stdout] 133 |     fn as_token_tree(&self) -> &TokenTree;
[INFO] [stdout] 134 |     fn into_token_tree(self) -> TokenTree;
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `into_token_tree` is never used
[INFO] [stdout]    --> src/utils.rs:134:8
[INFO] [stdout]     |
[INFO] [stdout] 132 | pub(crate) trait TokenTreeExt: Sized {
[INFO] [stdout]     |                  ------------ method in this trait
[INFO] [stdout] 133 |     fn as_token_tree(&self) -> &TokenTree;
[INFO] [stdout] 134 |     fn into_token_tree(self) -> TokenTree;
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "3c019213c29a0a87d32bd363fdeecb491a76e56c2cf43f88fd2948c97763bd24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c019213c29a0a87d32bd363fdeecb491a76e56c2cf43f88fd2948c97763bd24", kill_on_drop: false }`
[INFO] [stdout] 3c019213c29a0a87d32bd363fdeecb491a76e56c2cf43f88fd2948c97763bd24
