[INFO] fetching crate nibblecode 0.1.0...
[INFO] building nibblecode-0.1.0 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate nibblecode 0.1.0 into /workspace/builds/worker-2-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-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate nibblecode 0.1.0 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "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] 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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 01beb219ef3f52b346d87a8042a11973128a38afca64282d0f5c418d6b48e596
[INFO] running `Command { std: "docker" "start" "-a" "01beb219ef3f52b346d87a8042a11973128a38afca64282d0f5c418d6b48e596", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "01beb219ef3f52b346d87a8042a11973128a38afca64282d0f5c418d6b48e596", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01beb219ef3f52b346d87a8042a11973128a38afca64282d0f5c418d6b48e596", kill_on_drop: false }`
[INFO] [stdout] 01beb219ef3f52b346d87a8042a11973128a38afca64282d0f5c418d6b48e596
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c8fda3358e0cb1a19692235efdca0288c61f4cfab6f47abbb5691e3a3fcde3ff
[INFO] running `Command { std: "docker" "start" "-a" "c8fda3358e0cb1a19692235efdca0288c61f4cfab6f47abbb5691e3a3fcde3ff", kill_on_drop: false }`
[INFO] [stderr]    Compiling rend v0.5.2
[INFO] [stderr]    Compiling syn v2.0.102
[INFO] [stderr]    Compiling nibblecode_derive v0.1.0
[INFO] [stderr]    Compiling nibblecode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.68s
[INFO] running `Command { std: "docker" "inspect" "c8fda3358e0cb1a19692235efdca0288c61f4cfab6f47abbb5691e3a3fcde3ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8fda3358e0cb1a19692235efdca0288c61f4cfab6f47abbb5691e3a3fcde3ff", kill_on_drop: false }`
[INFO] [stdout] c8fda3358e0cb1a19692235efdca0288c61f4cfab6f47abbb5691e3a3fcde3ff
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe84e438ac8fb2b3b557c427afcf4f1a187b91ab33e13c58a8ed79ed9b2e0319
[INFO] running `Command { std: "docker" "start" "-a" "fe84e438ac8fb2b3b557c427afcf4f1a187b91ab33e13c58a8ed79ed9b2e0319", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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)]` (part of `#[warn(unused)]`) 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 `test` profile [unoptimized + debuginfo] target(s) in 3.00s
[INFO] running `Command { std: "docker" "inspect" "fe84e438ac8fb2b3b557c427afcf4f1a187b91ab33e13c58a8ed79ed9b2e0319", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe84e438ac8fb2b3b557c427afcf4f1a187b91ab33e13c58a8ed79ed9b2e0319", kill_on_drop: false }`
[INFO] [stdout] fe84e438ac8fb2b3b557c427afcf4f1a187b91ab33e13c58a8ed79ed9b2e0319