[INFO] fetching crate esp-01 0.1.1...
[INFO] checking esp-01-0.1.1 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate esp-01 0.1.1 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate esp-01 0.1.1
[INFO] finished tweaking crates.io crate esp-01 0.1.1
[INFO] tweaked toml for crates.io crate esp-01 0.1.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate esp-01 0.1.1 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 7 packages to latest compatible versions
[INFO] [stderr]       Adding arrayvec v0.4.12 (available: v0.7.6)
[INFO] [stderr]       Adding embedded-hal v0.2.7 (available: v1.0.0)
[INFO] [stderr]       Adding itoa v0.4.8 (available: v1.0.15)
[INFO] [stderr]       Adding nb v0.1.3 (available: v1.1.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 15f4d8560d802422c2ef2497f6d9fd7b910df3b59ebfe016b283d614320bb7ba
[INFO] running `Command { std: "docker" "start" "-a" "15f4d8560d802422c2ef2497f6d9fd7b910df3b59ebfe016b283d614320bb7ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15f4d8560d802422c2ef2497f6d9fd7b910df3b59ebfe016b283d614320bb7ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15f4d8560d802422c2ef2497f6d9fd7b910df3b59ebfe016b283d614320bb7ba", kill_on_drop: false }`
[INFO] [stdout] 15f4d8560d802422c2ef2497f6d9fd7b910df3b59ebfe016b283d614320bb7ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 34f6014b807d68cd7ca980968e3e968b250bac25d745cca6111edb6948e3c37e
[INFO] running `Command { std: "docker" "start" "-a" "34f6014b807d68cd7ca980968e3e968b250bac25d745cca6111edb6948e3c37e", kill_on_drop: false }`
[INFO] [stderr]     Checking nb v1.1.0
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]     Checking esp-01 v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `step` and `cause` are never read
[INFO] [stdout]   --> src/lib.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 83 | pub struct TransmissionError<R, T, P> {
[INFO] [stdout]    |            ----------------- fields in this struct
[INFO] [stdout] 84 |     step: TransmissionStep,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 85 |     cause: Error<R, T, P>
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TransmissionError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `step` and `cause` are never read
[INFO] [stdout]   --> src/lib.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 83 | pub struct TransmissionError<R, T, P> {
[INFO] [stdout]    |            ----------------- fields in this struct
[INFO] [stdout] 84 |     step: TransmissionStep,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 85 |     cause: Error<R, T, P>
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TransmissionError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `Command { std: "docker" "inspect" "34f6014b807d68cd7ca980968e3e968b250bac25d745cca6111edb6948e3c37e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34f6014b807d68cd7ca980968e3e968b250bac25d745cca6111edb6948e3c37e", kill_on_drop: false }`
[INFO] [stdout] 34f6014b807d68cd7ca980968e3e968b250bac25d745cca6111edb6948e3c37e