[INFO] fetching crate wmproxy 0.2.7...
[INFO] checking wmproxy-0.2.7 against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] extracting crate wmproxy 0.2.7 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate wmproxy 0.2.7
[INFO] finished tweaking crates.io crate wmproxy 0.2.7
[INFO] tweaked toml for crates.io crate wmproxy 0.2.7 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate wmproxy 0.2.7 on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate wmproxy 0.2.7 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" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] 8aa3d90fb185717da655b2cdb64bcdc74650dd701514df432384164022b72e5a
[INFO] running `Command { std: "docker" "start" "-a" "8aa3d90fb185717da655b2cdb64bcdc74650dd701514df432384164022b72e5a", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "rm" "-f" "8aa3d90fb185717da655b2cdb64bcdc74650dd701514df432384164022b72e5a", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b1c93b719098c4fd9768e0bbc97e611440b363a8fa75ed78ab1d2035add36ea
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[INFO] [stdout] warning: unused return value of `std::hash::Hasher::finish` that must be used
[INFO] [stdout]   --> src/reverse/location.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |         state.finish();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let _ = state.finish();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::hash::Hasher::finish` that must be used
[INFO] [stdout]   --> src/reverse/location.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |         state.finish();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let _ = state.finish();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `async_std::net`
[INFO] [stdout]  --> examples/arg.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use async_std::net;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `verbose` is never used
[INFO] [stdout]   --> examples/arg.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn verbose() -> impl Parser<usize> {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `positive` is never used
[INFO] [stdout]   --> examples/arg.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn positive(input: &u32) -> bool {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `first`
[INFO] [stdout]    --> examples/proxy.rs:105:9
[INFO] [stdout]     |
[INFO] [stdout] 105 |     let first = &src[..7];
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_first`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `second`
[INFO] [stdout]    --> examples/proxy.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 |     let second = &src[3..8];
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_second`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]    --> examples/proxy.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     let end = &src[8..];
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 24s
[INFO] running `Command { std: "docker" "inspect" "6b1c93b719098c4fd9768e0bbc97e611440b363a8fa75ed78ab1d2035add36ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b1c93b719098c4fd9768e0bbc97e611440b363a8fa75ed78ab1d2035add36ea", kill_on_drop: false }`
[INFO] [stdout] 6b1c93b719098c4fd9768e0bbc97e611440b363a8fa75ed78ab1d2035add36ea
