[INFO] fetching crate holochain_util 0.4.0-dev.4...
[INFO] checking holochain_util-0.4.0-dev.4 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] extracting crate holochain_util 0.4.0-dev.4 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate holochain_util 0.4.0-dev.4 on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate holochain_util 0.4.0-dev.4
[INFO] finished tweaking crates.io crate holochain_util 0.4.0-dev.4
[INFO] tweaked toml for crates.io crate holochain_util 0.4.0-dev.4 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 145 packages to latest compatible versions
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded one_err v0.0.8
[INFO] [stderr]   Downloaded minisign-verify v0.2.2
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[INFO] [stderr]   Downloaded libsodium-sys-stable v1.21.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 624ea5393608cfba290483c682337636b01b0fb868499cd1ef8693d3a7070b01
[INFO] running `Command { std: "docker" "start" "-a" "624ea5393608cfba290483c682337636b01b0fb868499cd1ef8693d3a7070b01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "624ea5393608cfba290483c682337636b01b0fb868499cd1ef8693d3a7070b01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "624ea5393608cfba290483c682337636b01b0fb868499cd1ef8693d3a7070b01", kill_on_drop: false }`
[INFO] [stdout] 624ea5393608cfba290483c682337636b01b0fb868499cd1ef8693d3a7070b01
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef1d14e4a6e8950c1f9c647ff5ce6cba75e18feaf27915d886bf58c70f32e0aa
[INFO] running `Command { std: "docker" "start" "-a" "ef1d14e4a6e8950c1f9c647ff5ce6cba75e18feaf27915d886bf58c70f32e0aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling tinyvec_macros v0.1.1
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[INFO] [stderr]    Compiling minisign-verify v0.2.2
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[INFO] [stderr]    Compiling core2 v0.4.0
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[INFO] [stderr]     Checking futures v0.3.30
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[INFO] [stderr]     Checking holochain_util v0.4.0-dev.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ffs/io_error.rs:57:27
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn with_backtrace(mut self) -> Self {
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/ffs/io_error.rs:67:29
[INFO] [stdout]    |
[INFO] [stdout] 67 |     pub fn remove_backtrace(mut self) -> Self {
[INFO] [stdout]    |                             ----^^^^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ffs/io_error.rs:57:27
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn with_backtrace(mut self) -> Self {
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/ffs/io_error.rs:67:29
[INFO] [stdout]    |
[INFO] [stdout] 67 |     pub fn remove_backtrace(mut self) -> Self {
[INFO] [stdout]    |                             ----^^^^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 38s
[INFO] running `Command { std: "docker" "inspect" "ef1d14e4a6e8950c1f9c647ff5ce6cba75e18feaf27915d886bf58c70f32e0aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef1d14e4a6e8950c1f9c647ff5ce6cba75e18feaf27915d886bf58c70f32e0aa", kill_on_drop: false }`
[INFO] [stdout] ef1d14e4a6e8950c1f9c647ff5ce6cba75e18feaf27915d886bf58c70f32e0aa