[INFO] fetching crate forward 0.1.0-alpha.1...
[INFO] checking forward-0.1.0-alpha.1 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate forward 0.1.0-alpha.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate forward 0.1.0-alpha.1
[INFO] finished tweaking crates.io crate forward 0.1.0-alpha.1
[INFO] tweaked toml for crates.io crate forward 0.1.0-alpha.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate forward 0.1.0-alpha.1 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 48 packages to latest compatible versions
[INFO] [stderr]       Adding tokio v0.2.25 (available: v1.45.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b2ee09611587b3d2ab2030ee404d699607aaddc379dbb0231588b0a621545ab9
[INFO] running `Command { std: "docker" "start" "-a" "b2ee09611587b3d2ab2030ee404d699607aaddc379dbb0231588b0a621545ab9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b2ee09611587b3d2ab2030ee404d699607aaddc379dbb0231588b0a621545ab9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2ee09611587b3d2ab2030ee404d699607aaddc379dbb0231588b0a621545ab9", kill_on_drop: false }`
[INFO] [stdout] b2ee09611587b3d2ab2030ee404d699607aaddc379dbb0231588b0a621545ab9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d0bcd4b049499b7ebd4b8514b7c1cfb74b70dcaf38a5fc0e164374c4f5bdc9a
[INFO] running `Command { std: "docker" "start" "-a" "1d0bcd4b049499b7ebd4b8514b7c1cfb74b70dcaf38a5fc0e164374c4f5bdc9a", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking futures-channel v0.3.31
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.17.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.5
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]     Checking net2 v0.2.39
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking forward v0.1.0-alpha.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `recv`
[INFO] [stdout]   --> src/server/mod.rs:90:21
[INFO] [stdout]    |
[INFO] [stdout] 90 |                     recv = s => {
[INFO] [stdout]    |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_recv`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `recv`
[INFO] [stdout]   --> src/server/mod.rs:90:21
[INFO] [stdout]    |
[INFO] [stdout] 90 |                     recv = s => {
[INFO] [stdout]    |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_recv`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.53s
[INFO] running `Command { std: "docker" "inspect" "1d0bcd4b049499b7ebd4b8514b7c1cfb74b70dcaf38a5fc0e164374c4f5bdc9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d0bcd4b049499b7ebd4b8514b7c1cfb74b70dcaf38a5fc0e164374c4f5bdc9a", kill_on_drop: false }`
[INFO] [stdout] 1d0bcd4b049499b7ebd4b8514b7c1cfb74b70dcaf38a5fc0e164374c4f5bdc9a