[INFO] fetching crate lfan 0.2.6...
[INFO] checking lfan-0.2.6 against try#24cd45d7714ba43afd4b8e62fb677b069b21c4a5 for pr-129543
[INFO] extracting crate lfan 0.2.6 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate lfan 0.2.6 on toolchain 24cd45d7714ba43afd4b8e62fb677b069b21c4a5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lfan 0.2.6
[INFO] finished tweaking crates.io crate lfan 0.2.6
[INFO] tweaked toml for crates.io crate lfan 0.2.6 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" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 24 packages to latest compatible versions
[INFO] [stderr]       Adding addr2line v0.22.0 (latest: v0.24.1)
[INFO] [stderr]       Adding gimli v0.29.0 (latest: v0.31.0)
[INFO] [stderr]       Adding miniz_oxide v0.7.4 (latest: v0.8.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 375cb1a8b1e325b991b8ec9a9b6fac6781c5ea22ffdeb0a2c7f20f14fe3d307a
[INFO] running `Command { std: "docker" "start" "-a" "375cb1a8b1e325b991b8ec9a9b6fac6781c5ea22ffdeb0a2c7f20f14fe3d307a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "375cb1a8b1e325b991b8ec9a9b6fac6781c5ea22ffdeb0a2c7f20f14fe3d307a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "375cb1a8b1e325b991b8ec9a9b6fac6781c5ea22ffdeb0a2c7f20f14fe3d307a", kill_on_drop: false }`
[INFO] [stdout] 375cb1a8b1e325b991b8ec9a9b6fac6781c5ea22ffdeb0a2c7f20f14fe3d307a
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 129b2f105244c974f3cf4628405d0b1a26b23dceec5d3fd37c907f39fb627a5f
[INFO] running `Command { std: "docker" "start" "-a" "129b2f105244c974f3cf4628405d0b1a26b23dceec5d3fd37c907f39fb627a5f", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking lfan v0.2.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `insert`, `get`, and `clear` are never used
[INFO] [stdout]   --> src/cache/cache_trait.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub trait Cache {
[INFO] [stdout]    |           ----- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 12 |     fn insert(&mut self, key: Self::Key, value: Self::Value) -> (bool, Option<Self::Value>);
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 13 |
[INFO] [stdout] 14 |     fn get<Q: ?Sized>(&mut self, key: &Q) -> Option<&Self::Value>
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn clear(&mut self);
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `insert`, `get`, and `clear` are never used
[INFO] [stdout]   --> src/cache/cache_trait.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub trait Cache {
[INFO] [stdout]    |           ----- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 12 |     fn insert(&mut self, key: Self::Key, value: Self::Value) -> (bool, Option<Self::Value>);
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 13 |
[INFO] [stdout] 14 |     fn get<Q: ?Sized>(&mut self, key: &Q) -> Option<&Self::Value>
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn clear(&mut self);
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.16s
[INFO] running `Command { std: "docker" "inspect" "129b2f105244c974f3cf4628405d0b1a26b23dceec5d3fd37c907f39fb627a5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "129b2f105244c974f3cf4628405d0b1a26b23dceec5d3fd37c907f39fb627a5f", kill_on_drop: false }`
[INFO] [stdout] 129b2f105244c974f3cf4628405d0b1a26b23dceec5d3fd37c907f39fb627a5f