[INFO] fetching crate humphrey_ws 0.5.1...
[INFO] checking humphrey_ws-0.5.1 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate humphrey_ws 0.5.1 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate humphrey_ws 0.5.1 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate humphrey_ws 0.5.1
[INFO] finished tweaking crates.io crate humphrey_ws 0.5.1
[INFO] tweaked toml for crates.io crate humphrey_ws 0.5.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 2 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded humphrey v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 15aaf3b35c4d0d7a70630dc4764edbf082d8a2dcf339b732c16f82642e6959bd
[INFO] running `Command { std: "docker" "start" "-a" "15aaf3b35c4d0d7a70630dc4764edbf082d8a2dcf339b732c16f82642e6959bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15aaf3b35c4d0d7a70630dc4764edbf082d8a2dcf339b732c16f82642e6959bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15aaf3b35c4d0d7a70630dc4764edbf082d8a2dcf339b732c16f82642e6959bd", kill_on_drop: false }`
[INFO] [stdout] 15aaf3b35c4d0d7a70630dc4764edbf082d8a2dcf339b732c16f82642e6959bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f2b1b33cc0cd088b7bca141c6da2fec71f8c4ca620624943711eb1c826afe4f1
[INFO] running `Command { std: "docker" "start" "-a" "f2b1b33cc0cd088b7bca141c6da2fec71f8c4ca620624943711eb1c826afe4f1", kill_on_drop: false }`
[INFO] [stderr]     Checking humphrey v0.7.0
[INFO] [stderr]     Checking humphrey_ws v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `decode` is never used
[INFO] [stdout]   --> src/util/base64.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub trait Base64Decode {
[INFO] [stdout]    |           ------------ method in this trait
[INFO] [stdout] 13 |     /// Attempt to decode a base64 string into a byte slice, returning `Err(())` if it is not valid base64.
[INFO] [stdout] 14 |     fn decode(&self) -> Result<Vec<u8>, ()>;
[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 0.93s
[INFO] running `Command { std: "docker" "inspect" "f2b1b33cc0cd088b7bca141c6da2fec71f8c4ca620624943711eb1c826afe4f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2b1b33cc0cd088b7bca141c6da2fec71f8c4ca620624943711eb1c826afe4f1", kill_on_drop: false }`
[INFO] [stdout] f2b1b33cc0cd088b7bca141c6da2fec71f8c4ca620624943711eb1c826afe4f1