[INFO] fetching crate clone_box 0.1.3...
[INFO] checking clone_box-0.1.3 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate clone_box 0.1.3 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate clone_box 0.1.3
[INFO] finished tweaking crates.io crate clone_box 0.1.3
[INFO] tweaked toml for crates.io crate clone_box 0.1.3 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate clone_box 0.1.3 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6ceb536bc5b8734b1798743901e274e3226d9fb56e412ff7f29ef2fca049eb89
[INFO] running `Command { std: "docker" "start" "-a" "6ceb536bc5b8734b1798743901e274e3226d9fb56e412ff7f29ef2fca049eb89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ceb536bc5b8734b1798743901e274e3226d9fb56e412ff7f29ef2fca049eb89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ceb536bc5b8734b1798743901e274e3226d9fb56e412ff7f29ef2fca049eb89", kill_on_drop: false }`
[INFO] [stdout] 6ceb536bc5b8734b1798743901e274e3226d9fb56e412ff7f29ef2fca049eb89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef3e5e523ab8f223721b4d9e85d466c5e79046dc842dd2432fb9d1906282c257
[INFO] running `Command { std: "docker" "start" "-a" "ef3e5e523ab8f223721b4d9e85d466c5e79046dc842dd2432fb9d1906282c257", kill_on_drop: false }`
[INFO] [stderr]     Checking proc-macro2 v1.0.95
[INFO] [stderr]     Checking quote v1.0.40
[INFO] [stderr]     Checking syn v2.0.104
[INFO] [stderr]     Checking clone_box v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `ty_generics`
[INFO] [stdout]    --> src/lib.rs:133:25
[INFO] [stdout]     |
[INFO] [stdout] 133 |     let (impl_generics, ty_generics, mut where_clause) = &item.generics.split_for_impl();
[INFO] [stdout]     |                         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ty_generics`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:133:38
[INFO] [stdout]     |
[INFO] [stdout] 133 |     let (impl_generics, ty_generics, mut where_clause) = &item.generics.split_for_impl();
[INFO] [stdout]     |                                      ----^^^^^^^^^^^^
[INFO] [stdout]     |                                      |
[INFO] [stdout]     |                                      help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ty_generics`
[INFO] [stdout]    --> src/lib.rs:133:25
[INFO] [stdout]     |
[INFO] [stdout] 133 |     let (impl_generics, ty_generics, mut where_clause) = &item.generics.split_for_impl();
[INFO] [stdout]     |                         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ty_generics`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:133:38
[INFO] [stdout]     |
[INFO] [stdout] 133 |     let (impl_generics, ty_generics, mut where_clause) = &item.generics.split_for_impl();
[INFO] [stdout]     |                                      ----^^^^^^^^^^^^
[INFO] [stdout]     |                                      |
[INFO] [stdout]     |                                      help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.27s
[INFO] running `Command { std: "docker" "inspect" "ef3e5e523ab8f223721b4d9e85d466c5e79046dc842dd2432fb9d1906282c257", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef3e5e523ab8f223721b4d9e85d466c5e79046dc842dd2432fb9d1906282c257", kill_on_drop: false }`
[INFO] [stdout] ef3e5e523ab8f223721b4d9e85d466c5e79046dc842dd2432fb9d1906282c257