[INFO] fetching crate mqttrust 0.6.0...
[INFO] checking mqttrust-0.6.0 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate mqttrust 0.6.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate mqttrust 0.6.0
[INFO] finished tweaking crates.io crate mqttrust 0.6.0
[INFO] tweaked toml for crates.io crate mqttrust 0.6.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mqttrust 0.6.0 on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "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" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "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 28 packages to latest compatible versions
[INFO] [stderr]       Adding defmt v0.3.100 (available: v1.0.1)
[INFO] [stderr]       Adding heapless v0.7.17 (available: v0.9.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c5030667434bfecdc16981272daa05033551950008ebf029621640873cc27f27
[INFO] running `Command { std: "docker" "start" "-a" "c5030667434bfecdc16981272daa05033551950008ebf029621640873cc27f27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c5030667434bfecdc16981272daa05033551950008ebf029621640873cc27f27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5030667434bfecdc16981272daa05033551950008ebf029621640873cc27f27", kill_on_drop: false }`
[INFO] [stdout] c5030667434bfecdc16981272daa05033551950008ebf029621640873cc27f27
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 150c99109cf4f403e0e9f6a39780c96501916dd8b9cd4e0f881522163d5cda2e
[INFO] running `Command { std: "docker" "start" "-a" "150c99109cf4f403e0e9f6a39780c96501916dd8b9cd4e0f881522163d5cda2e", kill_on_drop: false }`
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]    Compiling heapless v0.7.17
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking mqttrust v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `NoneError` is never constructed
[INFO] [stdout]    --> src/fmt.rs:221:12
[INFO] [stdout]     |
[INFO] [stdout] 221 | pub struct NoneError;
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Try` is never used
[INFO] [stdout]    --> src/fmt.rs:223:11
[INFO] [stdout]     |
[INFO] [stdout] 223 | pub trait Try {
[INFO] [stdout]     |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NoneError` is never constructed
[INFO] [stdout]    --> src/fmt.rs:221:12
[INFO] [stdout]     |
[INFO] [stdout] 221 | pub struct NoneError;
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Try` is never used
[INFO] [stdout]    --> src/fmt.rs:223:11
[INFO] [stdout]     |
[INFO] [stdout] 223 | pub trait Try {
[INFO] [stdout]     |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.99s
[INFO] running `Command { std: "docker" "inspect" "150c99109cf4f403e0e9f6a39780c96501916dd8b9cd4e0f881522163d5cda2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "150c99109cf4f403e0e9f6a39780c96501916dd8b9cd4e0f881522163d5cda2e", kill_on_drop: false }`
[INFO] [stdout] 150c99109cf4f403e0e9f6a39780c96501916dd8b9cd4e0f881522163d5cda2e