[INFO] fetching crate wrapnum 0.3.2...
[INFO] checking wrapnum-0.3.2 against try#4e55a504843955c97eb06907c71f6f3e99208021 for pr-146978
[INFO] extracting crate wrapnum 0.3.2 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate wrapnum 0.3.2
[INFO] finished tweaking crates.io crate wrapnum 0.3.2
[INFO] tweaked toml for crates.io crate wrapnum 0.3.2 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate wrapnum 0.3.2 on toolchain 4e55a504843955c97eb06907c71f6f3e99208021
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4e55a504843955c97eb06907c71f6f3e99208021" "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" "+4e55a504843955c97eb06907c71f6f3e99208021" "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]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 8 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4e55a504843955c97eb06907c71f6f3e99208021" "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-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4e55a504843955c97eb06907c71f6f3e99208021" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] Error response from daemon: mkdir /var/lib/docker/overlay2/c08d0b6997e28b4fefe890fa68a9c0066dbaf032eaafe81662556f3f67f4b93d-init: no space left on device
[INFO] checking wrapnum-0.3.2 against try#4e55a504843955c97eb06907c71f6f3e99208021 for pr-146978
[INFO] extracting crate wrapnum 0.3.2 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate wrapnum 0.3.2
[INFO] finished tweaking crates.io crate wrapnum 0.3.2
[INFO] tweaked toml for crates.io crate wrapnum 0.3.2 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate wrapnum 0.3.2 on toolchain 4e55a504843955c97eb06907c71f6f3e99208021
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4e55a504843955c97eb06907c71f6f3e99208021" "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" "+4e55a504843955c97eb06907c71f6f3e99208021" "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]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 8 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4e55a504843955c97eb06907c71f6f3e99208021" "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-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4e55a504843955c97eb06907c71f6f3e99208021" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f7ef3b9c85c7567ee614acf3f5c4bb40e7e6bc66e9c30b1bbab0993e8a2370cc
[INFO] running `Command { std: "docker" "start" "-a" "f7ef3b9c85c7567ee614acf3f5c4bb40e7e6bc66e9c30b1bbab0993e8a2370cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7ef3b9c85c7567ee614acf3f5c4bb40e7e6bc66e9c30b1bbab0993e8a2370cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7ef3b9c85c7567ee614acf3f5c4bb40e7e6bc66e9c30b1bbab0993e8a2370cc", kill_on_drop: false }`
[INFO] [stdout] f7ef3b9c85c7567ee614acf3f5c4bb40e7e6bc66e9c30b1bbab0993e8a2370cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4e55a504843955c97eb06907c71f6f3e99208021" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0430a2f2995ab2237c18a6fc343497e2a042cf41a79b1b698de0d39ae38fc3e1
[INFO] running `Command { std: "docker" "start" "-a" "0430a2f2995ab2237c18a6fc343497e2a042cf41a79b1b698de0d39ae38fc3e1", kill_on_drop: false }`
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking num v0.4.3
[INFO] [stderr]     Checking wrapnum v0.3.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `hmm`
[INFO] [stdout]    --> src/lib.rs:379:13
[INFO] [stdout]     |
[INFO] [stdout] 379 |         let hmm: WrapNum<u32> = 420.into();
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_hmm`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `as_u32`
[INFO] [stdout]    --> src/lib.rs:380:13
[INFO] [stdout]     |
[INFO] [stdout] 380 |         let as_u32 = u32::from(here);
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_as_u32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `Command { std: "docker" "inspect" "0430a2f2995ab2237c18a6fc343497e2a042cf41a79b1b698de0d39ae38fc3e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0430a2f2995ab2237c18a6fc343497e2a042cf41a79b1b698de0d39ae38fc3e1", kill_on_drop: false }`
[INFO] [stdout] 0430a2f2995ab2237c18a6fc343497e2a042cf41a79b1b698de0d39ae38fc3e1