[INFO] fetching crate tunneler-core 0.7.1...
[INFO] checking tunneler-core-0.7.1 against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] extracting crate tunneler-core 0.7.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate tunneler-core 0.7.1 on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tunneler-core 0.7.1
[INFO] finished tweaking crates.io crate tunneler-core 0.7.1
[INFO] tweaked toml for crates.io crate tunneler-core 0.7.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate tunneler-core 0.7.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.70
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 691c1b9b693bc521b37c2d5a72ee7832b1713f013b0a9dc6675d8a7be0285f98
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "691c1b9b693bc521b37c2d5a72ee7832b1713f013b0a9dc6675d8a7be0285f98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "691c1b9b693bc521b37c2d5a72ee7832b1713f013b0a9dc6675d8a7be0285f98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "691c1b9b693bc521b37c2d5a72ee7832b1713f013b0a9dc6675d8a7be0285f98", kill_on_drop: false }`
[INFO] [stdout] 691c1b9b693bc521b37c2d5a72ee7832b1713f013b0a9dc6675d8a7be0285f98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d65c79a0fa7c10234c459d86ed520309bb791fc431181171652e9b05b19e6334
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d65c79a0fa7c10234c459d86ed520309bb791fc431181171652e9b05b19e6334", kill_on_drop: false }`
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[INFO] [stderr]     Checking tunneler-core v0.7.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `debug`
[INFO] [stdout]  --> src/server/user/recv.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | use log::{debug, error};
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking criterion v0.3.4
[INFO] [stderr]     Checking h2 v0.3.0
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking hyper v0.14.4
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.1
[INFO] [stdout] warning: unused variable: `reader`
[INFO] [stdout]  --> examples/forwarder.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     reader: mpsc::StreamReader<Message>,
[INFO] [stdout]   |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reader`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]  --> examples/forwarder.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     data: Option<u64>,
[INFO] [stdout]   |     ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `debug`
[INFO] [stdout]  --> src/server/user/recv.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | use log::{debug, error};
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 10s
[INFO] running `Command { std: "docker" "inspect" "d65c79a0fa7c10234c459d86ed520309bb791fc431181171652e9b05b19e6334", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d65c79a0fa7c10234c459d86ed520309bb791fc431181171652e9b05b19e6334", kill_on_drop: false }`
[INFO] [stdout] d65c79a0fa7c10234c459d86ed520309bb791fc431181171652e9b05b19e6334