[INFO] fetching crate np_core 0.1.0...
[INFO] checking np_core-0.1.0 against try#44e31dee3cf6f37b4f652572897bb0eb25c477ee for pr-139763
[INFO] extracting crate np_core 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate np_core 0.1.0 on toolchain 44e31dee3cf6f37b4f652572897bb0eb25c477ee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate np_core 0.1.0
[INFO] finished tweaking crates.io crate np_core 0.1.0
[INFO] tweaked toml for crates.io crate np_core 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fde82878047586b1e93dcb38d395903b0768053691be080975c895a265c87634
[INFO] running `Command { std: "docker" "start" "-a" "fde82878047586b1e93dcb38d395903b0768053691be080975c895a265c87634", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fde82878047586b1e93dcb38d395903b0768053691be080975c895a265c87634", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fde82878047586b1e93dcb38d395903b0768053691be080975c895a265c87634", kill_on_drop: false }`
[INFO] [stdout] fde82878047586b1e93dcb38d395903b0768053691be080975c895a265c87634
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e585881fba3337bd5f1f9fc1ecf82d3e53e4d449532fe3caa8c0e6d02f5134b5
[INFO] running `Command { std: "docker" "start" "-a" "e585881fba3337bd5f1f9fc1ecf82d3e53e4d449532fe3caa8c0e6d02f5134b5", kill_on_drop: false }`
[INFO] [stderr]     Checking np_core v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `Constructable` is never used
[INFO] [stdout]  --> src/lib.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub trait Constructable {
[INFO] [stdout]   |               ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ref` is never constructed
[INFO] [stdout]  --> src/lib.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub struct Ref<T> where T: 'static {
[INFO] [stdout]   |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Constructable` is never used
[INFO] [stdout]  --> src/lib.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub trait Constructable {
[INFO] [stdout]   |               ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ref` is never constructed
[INFO] [stdout]  --> src/lib.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub struct Ref<T> where T: 'static {
[INFO] [stdout]   |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "e585881fba3337bd5f1f9fc1ecf82d3e53e4d449532fe3caa8c0e6d02f5134b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e585881fba3337bd5f1f9fc1ecf82d3e53e4d449532fe3caa8c0e6d02f5134b5", kill_on_drop: false }`
[INFO] [stdout] e585881fba3337bd5f1f9fc1ecf82d3e53e4d449532fe3caa8c0e6d02f5134b5