[INFO] fetching crate io-result-optional 0.1.2...
[INFO] checking io-result-optional-0.1.2 against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] extracting crate io-result-optional 0.1.2 into /workspace/builds/worker-64/source
[INFO] validating manifest of crates.io crate io-result-optional 0.1.2 on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate io-result-optional 0.1.2
[INFO] finished tweaking crates.io crate io-result-optional 0.1.2
[INFO] tweaked toml for crates.io crate io-result-optional 0.1.2 written to /workspace/builds/worker-64/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0ec7b6a69b01bc119618bd7e764f7c0d69f733209721c4dd627eb8b7583bc761
[INFO] running `Command { std: "docker" "start" "-a" "0ec7b6a69b01bc119618bd7e764f7c0d69f733209721c4dd627eb8b7583bc761", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ec7b6a69b01bc119618bd7e764f7c0d69f733209721c4dd627eb8b7583bc761", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ec7b6a69b01bc119618bd7e764f7c0d69f733209721c4dd627eb8b7583bc761", kill_on_drop: false }`
[INFO] [stdout] 0ec7b6a69b01bc119618bd7e764f7c0d69f733209721c4dd627eb8b7583bc761
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aef2adfd2419281a360e8cf659dbb13fe6a81d726949f9120e01f231fb50e37b
[INFO] running `Command { std: "docker" "start" "-a" "aef2adfd2419281a360e8cf659dbb13fe6a81d726949f9120e01f231fb50e37b", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking io-result-optional v0.1.2 (/tmp/fixit)
[INFO] [stderr]    Migrating src/lib.rs from 2018 edition to 2021
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.06s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking io-result-optional v0.1.2 (/tmp/fixit)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "aef2adfd2419281a360e8cf659dbb13fe6a81d726949f9120e01f231fb50e37b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aef2adfd2419281a360e8cf659dbb13fe6a81d726949f9120e01f231fb50e37b", kill_on_drop: false }`
[INFO] [stdout] aef2adfd2419281a360e8cf659dbb13fe6a81d726949f9120e01f231fb50e37b