[INFO] fetching crate tunneler-core 0.12.0...
[INFO] checking tunneler-core-0.12.0 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate tunneler-core 0.12.0 into /workspace/builds/worker-99/source
[INFO] validating manifest of crates.io crate tunneler-core 0.12.0 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tunneler-core 0.12.0
[INFO] finished tweaking crates.io crate tunneler-core 0.12.0
[INFO] tweaked toml for crates.io crate tunneler-core 0.12.0 written to /workspace/builds/worker-99/source/Cargo.toml
[INFO] crate crates.io crate tunneler-core 0.12.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rsa v0.3.0
[INFO] [stderr]   Downloaded num-bigint-dig v0.6.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e6b6d83a95bc36dee2e6209dfa93c8210b6afdd4be40ee465828edb8cb8b4d18
[INFO] running `Command { std: "docker" "start" "-a" "e6b6d83a95bc36dee2e6209dfa93c8210b6afdd4be40ee465828edb8cb8b4d18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6b6d83a95bc36dee2e6209dfa93c8210b6afdd4be40ee465828edb8cb8b4d18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6b6d83a95bc36dee2e6209dfa93c8210b6afdd4be40ee465828edb8cb8b4d18", kill_on_drop: false }`
[INFO] [stdout] e6b6d83a95bc36dee2e6209dfa93c8210b6afdd4be40ee465828edb8cb8b4d18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 247401e9161acafc3176b530c2dd9aa33d68e98eb2bc6efa37e24cc0983374f6
[INFO] running `Command { std: "docker" "start" "-a" "247401e9161acafc3176b530c2dd9aa33d68e98eb2bc6efa37e24cc0983374f6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling ucd-trie v0.1.3
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[INFO] [stderr]     Checking itoa v0.4.7
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[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]     Checking cpufeatures v0.1.4
[INFO] [stderr]     Checking plotters-backend v0.3.0
[INFO] [stderr]     Checking smallvec v1.6.1
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[INFO] [stderr]    Compiling num-traits v0.2.14
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[INFO] [stderr]    Compiling num-iter v0.1.42
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[INFO] [stderr]     Checking tunneler-core v0.12.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `client_manager`
[INFO] [stdout]   --> src/server/forwarder/client.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     client_manager: std::sync::Arc<ClientManager>,
[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]     Checking criterion v0.3.4
[INFO] [stdout] warning: crate `Benchmark` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `benchmark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `client_manager`
[INFO] [stdout]   --> src/server/forwarder/client.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     client_manager: std::sync::Arc<ClientManager>,
[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 [unoptimized + debuginfo] target(s) in 25.02s
[INFO] running `Command { std: "docker" "inspect" "247401e9161acafc3176b530c2dd9aa33d68e98eb2bc6efa37e24cc0983374f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "247401e9161acafc3176b530c2dd9aa33d68e98eb2bc6efa37e24cc0983374f6", kill_on_drop: false }`
[INFO] [stdout] 247401e9161acafc3176b530c2dd9aa33d68e98eb2bc6efa37e24cc0983374f6