[INFO] fetching crate vc_8bit 0.1.12...
[INFO] checking vc_8bit-0.1.12 against master#642c19bfc3a5c1de985bf5d0cc8207ac9d22708a for pr-148577
[INFO] extracting crate vc_8bit 0.1.12 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate vc_8bit 0.1.12
[INFO] finished tweaking crates.io crate vc_8bit 0.1.12
[INFO] tweaked toml for crates.io crate vc_8bit 0.1.12 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate vc_8bit 0.1.12 on toolchain 642c19bfc3a5c1de985bf5d0cc8207ac9d22708a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 5 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1f3098eb1dc1cdc4510d39c4ec1b24955322f658cbbb7d15744ff3d4b06d2439
[INFO] running `Command { std: "docker" "start" "-a" "1f3098eb1dc1cdc4510d39c4ec1b24955322f658cbbb7d15744ff3d4b06d2439", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f3098eb1dc1cdc4510d39c4ec1b24955322f658cbbb7d15744ff3d4b06d2439", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f3098eb1dc1cdc4510d39c4ec1b24955322f658cbbb7d15744ff3d4b06d2439", kill_on_drop: false }`
[INFO] [stdout] 1f3098eb1dc1cdc4510d39c4ec1b24955322f658cbbb7d15744ff3d4b06d2439
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a7489ae74f850b3b6272e1f65edb9b4528e5dbdece01459a4c5cd894584f7d5
[INFO] running `Command { std: "docker" "start" "-a" "8a7489ae74f850b3b6272e1f65edb9b4528e5dbdece01459a4c5cd894584f7d5", kill_on_drop: false }`
[INFO] [stderr]     Checking vc_8bit v0.1.12 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/c_lang.rs:5:23
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::assembly::{self, compile_assembly_to_binary, string_to_bytes};
[INFO] [stdout]   |                       ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/c_lang.rs:5:23
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::assembly::{self, compile_assembly_to_binary, string_to_bytes};
[INFO] [stdout]   |                       ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Token` instead of cloning the inner type
[INFO] [stdout]    --> src/c_lang.rs:529:73
[INFO] [stdout]     |
[INFO] [stdout] 529 |                         let e2 = ExprNode::new_num(chars.peek().unwrap().clone().clone(), number);
[INFO] [stdout]     |                                                                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Token` instead of cloning the inner type
[INFO] [stdout]    --> src/c_lang.rs:547:69
[INFO] [stdout]     |
[INFO] [stdout] 547 |                     let e1 = ExprNode::new_num(chars.peek().unwrap().clone().clone(), number);
[INFO] [stdout]     |                                                                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Token` instead of cloning the inner type
[INFO] [stdout]    --> src/c_lang.rs:529:73
[INFO] [stdout]     |
[INFO] [stdout] 529 |                         let e2 = ExprNode::new_num(chars.peek().unwrap().clone().clone(), number);
[INFO] [stdout]     |                                                                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Token` instead of cloning the inner type
[INFO] [stdout]    --> src/c_lang.rs:547:69
[INFO] [stdout]     |
[INFO] [stdout] 547 |                     let e1 = ExprNode::new_num(chars.peek().unwrap().clone().clone(), number);
[INFO] [stdout]     |                                                                     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "8a7489ae74f850b3b6272e1f65edb9b4528e5dbdece01459a4c5cd894584f7d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a7489ae74f850b3b6272e1f65edb9b4528e5dbdece01459a4c5cd894584f7d5", kill_on_drop: false }`
[INFO] [stdout] 8a7489ae74f850b3b6272e1f65edb9b4528e5dbdece01459a4c5cd894584f7d5