[INFO] fetching crate Nuclide 0.3.0...
[INFO] checking Nuclide-0.3.0 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate Nuclide 0.3.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate Nuclide 0.3.0
[INFO] finished tweaking crates.io crate Nuclide 0.3.0
[INFO] tweaked toml for crates.io crate Nuclide 0.3.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate Nuclide 0.3.0 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] crate crates.io crate Nuclide 0.3.0 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 101a64a93481388a457ab901f37666761b33dd55b8a8ecfc614a2f897aa1c6e1
[INFO] running `Command { std: "docker" "start" "-a" "101a64a93481388a457ab901f37666761b33dd55b8a8ecfc614a2f897aa1c6e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "101a64a93481388a457ab901f37666761b33dd55b8a8ecfc614a2f897aa1c6e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "101a64a93481388a457ab901f37666761b33dd55b8a8ecfc614a2f897aa1c6e1", kill_on_drop: false }`
[INFO] [stdout] 101a64a93481388a457ab901f37666761b33dd55b8a8ecfc614a2f897aa1c6e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 0bd83518635ddf4cef6981796f41b21c6976f196c422c1a5548367370329164c
[INFO] running `Command { std: "docker" "start" "-a" "0bd83518635ddf4cef6981796f41b21c6976f196c422c1a5548367370329164c", kill_on_drop: false }`
[INFO] [stderr]     Checking Pion v0.0.2
[INFO] [stderr]     Checking Nuclide v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `NuclideFraction`
[INFO] [stdout]  --> tests/element.rs:1:34
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ::Nuclide::{Nuclide,Element, NuclideFraction};
[INFO] [stdout]   |                                  ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ChemElement`
[INFO] [stdout]  --> tests/nuclidetest.rs:1:26
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ::Nuclide::{Isotope, ChemElement, Nuclide};
[INFO] [stdout]   |                          ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> tests/element.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     "S-34".parse::<Nuclide>();
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let _ = "S-34".parse::<Nuclide>();
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `Command { std: "docker" "inspect" "0bd83518635ddf4cef6981796f41b21c6976f196c422c1a5548367370329164c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bd83518635ddf4cef6981796f41b21c6976f196c422c1a5548367370329164c", kill_on_drop: false }`
[INFO] [stdout] 0bd83518635ddf4cef6981796f41b21c6976f196c422c1a5548367370329164c