[INFO] fetching crate nibblecode 0.1.0...
[INFO] checking nibblecode-0.1.0 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate nibblecode 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate nibblecode 0.1.0
[INFO] finished tweaking crates.io crate nibblecode 0.1.0
[INFO] tweaked toml for crates.io crate nibblecode 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate nibblecode 0.1.0 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate nibblecode 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nibblecode_derive v0.1.0
[INFO] [stderr]   Downloaded rend v0.5.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 06576c95c704b27cb51051afff7f90b6248c77f752f9252790daa19ee7e28021
[INFO] running `Command { std: "docker" "start" "-a" "06576c95c704b27cb51051afff7f90b6248c77f752f9252790daa19ee7e28021", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "06576c95c704b27cb51051afff7f90b6248c77f752f9252790daa19ee7e28021", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06576c95c704b27cb51051afff7f90b6248c77f752f9252790daa19ee7e28021", kill_on_drop: false }`
[INFO] [stdout] 06576c95c704b27cb51051afff7f90b6248c77f752f9252790daa19ee7e28021
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f75cad6e770f25efdf5d94c382fa6c122c3907a446ba779b4e5d182da7e19f4
[INFO] running `Command { std: "docker" "start" "-a" "5f75cad6e770f25efdf5d94c382fa6c122c3907a446ba779b4e5d182da7e19f4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]     Checking rend v0.5.2
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.102
[INFO] [stderr]    Compiling nibblecode_derive v0.1.0
[INFO] [stderr]     Checking nibblecode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `TupleFoo` is never constructed
[INFO] [stdout]    --> src/impls/mod.rs:386:14
[INFO] [stdout]     |
[INFO] [stdout] 386 |         pub struct TupleFoo<T = i32>(T);
[INFO] [stdout]     |                    ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StructFoo` is never constructed
[INFO] [stdout]    --> src/impls/mod.rs:390:14
[INFO] [stdout]     |
[INFO] [stdout] 390 |         pub struct StructFoo<T = i32> {
[INFO] [stdout]     |                    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `EnumFoo` is never used
[INFO] [stdout]    --> src/impls/mod.rs:396:12
[INFO] [stdout]     |
[INFO] [stdout] 396 |         pub enum EnumFoo<T = i32> {
[INFO] [stdout]     |                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Array` is never constructed
[INFO] [stdout]    --> src/impls/mod.rs:414:14
[INFO] [stdout]     |
[INFO] [stdout] 414 |         pub struct Array<T, const N: usize>([T; N]);
[INFO] [stdout]     |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Example` is never constructed
[INFO] [stdout]    --> src/impls/mod.rs:550:10
[INFO] [stdout]     |
[INFO] [stdout] 550 |         struct Example {
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Wrapper` is never constructed
[INFO] [stdout]    --> src/impls/mod.rs:558:10
[INFO] [stdout]     |
[INFO] [stdout] 558 |         struct Wrapper<T> {
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Example` is never constructed
[INFO] [stdout]    --> src/impls/mod.rs:565:10
[INFO] [stdout]     |
[INFO] [stdout] 565 |         struct Example {
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Test` is never constructed
[INFO] [stdout]    --> src/impls/mod.rs:576:10
[INFO] [stdout]     |
[INFO] [stdout] 576 |         struct Test<'a> {
[INFO] [stdout]     |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.62s
[INFO] running `Command { std: "docker" "inspect" "5f75cad6e770f25efdf5d94c382fa6c122c3907a446ba779b4e5d182da7e19f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f75cad6e770f25efdf5d94c382fa6c122c3907a446ba779b4e5d182da7e19f4", kill_on_drop: false }`
[INFO] [stdout] 5f75cad6e770f25efdf5d94c382fa6c122c3907a446ba779b4e5d182da7e19f4