[INFO] fetching crate neutral 0.2.6...
[INFO] checking neutral-0.2.6 against try#377afada703be70d3fdff9164a481570a3cba7fe for pr-113240
[INFO] extracting crate neutral 0.2.6 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate neutral 0.2.6 on toolchain 377afada703be70d3fdff9164a481570a3cba7fe
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+377afada703be70d3fdff9164a481570a3cba7fe" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate neutral 0.2.6
[INFO] finished tweaking crates.io crate neutral 0.2.6
[INFO] tweaked toml for crates.io crate neutral 0.2.6 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+377afada703be70d3fdff9164a481570a3cba7fe" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+377afada703be70d3fdff9164a481570a3cba7fe" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+377afada703be70d3fdff9164a481570a3cba7fe" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 69f5594f9d9d4ded72f80786eb5f6824eb82adccdd532258b3068df2ba6032b0
[INFO] running `Command { std: "docker" "start" "-a" "69f5594f9d9d4ded72f80786eb5f6824eb82adccdd532258b3068df2ba6032b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "69f5594f9d9d4ded72f80786eb5f6824eb82adccdd532258b3068df2ba6032b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69f5594f9d9d4ded72f80786eb5f6824eb82adccdd532258b3068df2ba6032b0", kill_on_drop: false }`
[INFO] [stdout] 69f5594f9d9d4ded72f80786eb5f6824eb82adccdd532258b3068df2ba6032b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+377afada703be70d3fdff9164a481570a3cba7fe" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] abe5175ef19c502c6dc2948cbb2e1ec9748fbc254aa733e47c34e450954357c5
[INFO] running `Command { std: "docker" "start" "-a" "abe5175ef19c502c6dc2948cbb2e1ec9748fbc254aa733e47c34e450954357c5", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]     Checking percent-encoding v2.3.0
[INFO] [stderr]     Checking aho-corasick v1.0.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking regex-syntax v0.7.2
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]     Checking form_urlencoded v1.2.0
[INFO] [stderr]     Checking assert-json-diff v2.0.2
[INFO] [stderr]     Checking zeroize v1.6.0
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking secrecy v0.8.0
[INFO] [stderr]     Checking assert_approx_eq v1.1.0
[INFO] [stderr]     Checking regex v1.8.4
[INFO] [stderr]    Compiling darling_macro v0.13.4
[INFO] [stderr]     Checking mockito v0.30.0
[INFO] [stderr]    Compiling darling v0.13.4
[INFO] [stderr]    Compiling serde_with_macros v1.5.2
[INFO] [stderr]     Checking h2 v0.3.20
[INFO] [stderr]     Checking futures-executor v0.3.28
[INFO] [stderr]     Checking futures v0.3.28
[INFO] [stderr]     Checking serde_with v1.14.0
[INFO] [stderr]     Checking hyper v0.14.27
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking neutral_types v0.2.0
[INFO] [stderr]     Checking neutral v0.2.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `uri`
[INFO] [stdout]   --> src/lib.rs:72:20
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn try_new(uri: &str, auth: ApiAuth) -> Result<Self, Error> {
[INFO] [stdout]    |                    ^^^ help: if this is intentional, prefix it with an underscore: `_uri`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.75s
[INFO] running `Command { std: "docker" "inspect" "abe5175ef19c502c6dc2948cbb2e1ec9748fbc254aa733e47c34e450954357c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abe5175ef19c502c6dc2948cbb2e1ec9748fbc254aa733e47c34e450954357c5", kill_on_drop: false }`
[INFO] [stdout] abe5175ef19c502c6dc2948cbb2e1ec9748fbc254aa733e47c34e450954357c5