[INFO] fetching crate palette_derive 0.7.6...
[INFO] testing palette_derive-0.7.6 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1
[INFO] extracting crate palette_derive 0.7.6 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate palette_derive 0.7.6
[INFO] finished tweaking crates.io crate palette_derive 0.7.6
[INFO] tweaked toml for crates.io crate palette_derive 0.7.6 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate palette_derive 0.7.6 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 10 packages to latest compatible versions
[INFO] [stderr]       Adding find-crate v0.6.3 (available: v0.7.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8582ff16f0ca6eb1d51f4d71d3a6185a260313a5618fffad77ee87f44fbbb49e
[INFO] running `Command { std: "docker" "start" "-a" "8582ff16f0ca6eb1d51f4d71d3a6185a260313a5618fffad77ee87f44fbbb49e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8582ff16f0ca6eb1d51f4d71d3a6185a260313a5618fffad77ee87f44fbbb49e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8582ff16f0ca6eb1d51f4d71d3a6185a260313a5618fffad77ee87f44fbbb49e", kill_on_drop: false }`
[INFO] [stdout] 8582ff16f0ca6eb1d51f4d71d3a6185a260313a5618fffad77ee87f44fbbb49e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a583595faa060e19fc4a18250b7d24864c7b8e440583229a72a5524b74e233f
[INFO] running `Command { std: "docker" "start" "-a" "6a583595faa060e19fc4a18250b7d24864c7b8e440583229a72a5524b74e233f", kill_on_drop: false }`
[INFO] [stderr]    Compiling by_address v1.2.1
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling palette_derive v0.7.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `KeyValuePair` is never constructed
[INFO] [stdout]    --> src/meta/mod.rs:144:12
[INFO] [stdout]     |
[INFO] [stdout] 144 | pub struct KeyValuePair {
[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 4.19s
[INFO] running `Command { std: "docker" "inspect" "6a583595faa060e19fc4a18250b7d24864c7b8e440583229a72a5524b74e233f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a583595faa060e19fc4a18250b7d24864c7b8e440583229a72a5524b74e233f", kill_on_drop: false }`
[INFO] [stdout] 6a583595faa060e19fc4a18250b7d24864c7b8e440583229a72a5524b74e233f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef778910afa4df9eb54ff5826e08a161299b8dee451fd5ff299984ade05b4cb1
[INFO] running `Command { std: "docker" "start" "-a" "ef778910afa4df9eb54ff5826e08a161299b8dee451fd5ff299984ade05b4cb1", kill_on_drop: false }`
[INFO] [stderr]    Compiling palette_derive v0.7.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `KeyValuePair` is never constructed
[INFO] [stdout]    --> src/meta/mod.rs:144:12
[INFO] [stdout]     |
[INFO] [stdout] 144 | pub struct KeyValuePair {
[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 `KeyValuePair` is never constructed
[INFO] [stdout]    --> src/meta/mod.rs:144:12
[INFO] [stdout]     |
[INFO] [stdout] 144 | pub struct KeyValuePair {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `Command { std: "docker" "inspect" "ef778910afa4df9eb54ff5826e08a161299b8dee451fd5ff299984ade05b4cb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef778910afa4df9eb54ff5826e08a161299b8dee451fd5ff299984ade05b4cb1", kill_on_drop: false }`
[INFO] [stdout] ef778910afa4df9eb54ff5826e08a161299b8dee451fd5ff299984ade05b4cb1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9c4eddfd81c3c8c325e09b28fac20e9ba17308fba6547a0f85a780a9f06e74eb
[INFO] running `Command { std: "docker" "start" "-a" "9c4eddfd81c3c8c325e09b28fac20e9ba17308fba6547a0f85a780a9f06e74eb", kill_on_drop: false }`
[INFO] [stderr] warning: struct `KeyValuePair` is never constructed
[INFO] [stderr]    --> src/meta/mod.rs:144:12
[INFO] [stderr]     |
[INFO] [stderr] 144 | pub struct KeyValuePair {
[INFO] [stderr]     |            ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `palette_derive` (lib) generated 1 warning
[INFO] [stderr] warning: `palette_derive` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/palette_derive-abb8b8d3e9fdf199)
[INFO] [stderr]    Doc-tests palette_derive
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9c4eddfd81c3c8c325e09b28fac20e9ba17308fba6547a0f85a780a9f06e74eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c4eddfd81c3c8c325e09b28fac20e9ba17308fba6547a0f85a780a9f06e74eb", kill_on_drop: false }`
[INFO] [stdout] 9c4eddfd81c3c8c325e09b28fac20e9ba17308fba6547a0f85a780a9f06e74eb