[INFO] fetching crate ipcbus 0.1.0...
[INFO] checking ipcbus-0.1.0 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate ipcbus 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate ipcbus 0.1.0 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 ipcbus 0.1.0
[INFO] finished tweaking crates.io crate ipcbus 0.1.0
[INFO] tweaked toml for crates.io crate ipcbus 0.1.0 written to /workspace/builds/worker-2-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]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 34 packages to latest compatible versions
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.6.0)
[INFO] [stderr]       Adding event-listener v2.5.3 (latest: v5.3.1)
[INFO] [stderr]       Adding memoffset v0.6.5 (latest: v0.9.1)
[INFO] [stderr]       Adding nix v0.24.3 (latest: v0.29.0)
[INFO] [stderr]       Adding socket2 v0.4.10 (latest: v0.5.7)
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] ed755c9b8b678d79971db72040cc720c1d9e8473912641eafe6475ffe7b5c721
[INFO] running `Command { std: "docker" "start" "-a" "ed755c9b8b678d79971db72040cc720c1d9e8473912641eafe6475ffe7b5c721", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed755c9b8b678d79971db72040cc720c1d9e8473912641eafe6475ffe7b5c721", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed755c9b8b678d79971db72040cc720c1d9e8473912641eafe6475ffe7b5c721", kill_on_drop: false }`
[INFO] [stdout] ed755c9b8b678d79971db72040cc720c1d9e8473912641eafe6475ffe7b5c721
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 6450d7f97783d6e3379ff36fb97ca1cc341a440548da3a697afb88e8fa60ce96
[INFO] running `Command { std: "docker" "start" "-a" "6450d7f97783d6e3379ff36fb97ca1cc341a440548da3a697afb88e8fa60ce96", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]     Checking event-listener v2.5.3
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]     Checking nix v0.24.3
[INFO] [stderr]     Checking fslock v0.2.1
[INFO] [stderr]     Checking socket2 v0.4.10
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking ipcbus v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/procbus.rs:72:13
[INFO] [stdout]    |
[INFO] [stdout] 72 |         let mut this = Arc::get_mut(self).expect("You must init_udp before cloning a env");
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/procbus.rs:72:13
[INFO] [stdout]    |
[INFO] [stdout] 72 |         let mut this = Arc::get_mut(self).expect("You must init_udp before cloning a env");
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` 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 12.96s
[INFO] running `Command { std: "docker" "inspect" "6450d7f97783d6e3379ff36fb97ca1cc341a440548da3a697afb88e8fa60ce96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6450d7f97783d6e3379ff36fb97ca1cc341a440548da3a697afb88e8fa60ce96", kill_on_drop: false }`
[INFO] [stdout] 6450d7f97783d6e3379ff36fb97ca1cc341a440548da3a697afb88e8fa60ce96