[INFO] fetching crate gel-o 0.0.3...
[INFO] building gel-o-0.0.3 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] extracting crate gel-o 0.0.3 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate gel-o 0.0.3 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gel-o 0.0.3
[INFO] finished tweaking crates.io crate gel-o 0.0.3
[INFO] tweaked toml for crates.io crate gel-o 0.0.3 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate gel-o 0.0.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded evdev-rs v0.4.0
[INFO] [stderr]   Downloaded epoll v4.1.0
[INFO] [stderr]   Downloaded inotify v0.8.2
[INFO] [stderr]   Downloaded evdev-sys v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 35f83b1721a25c18f67007f3c7aa956ad8b8f5630f762760f3bdafc4afe54f88
[INFO] running `Command { std: "docker" "start" "-a" "35f83b1721a25c18f67007f3c7aa956ad8b8f5630f762760f3bdafc4afe54f88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "35f83b1721a25c18f67007f3c7aa956ad8b8f5630f762760f3bdafc4afe54f88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35f83b1721a25c18f67007f3c7aa956ad8b8f5630f762760f3bdafc4afe54f88", kill_on_drop: false }`
[INFO] [stdout] 35f83b1721a25c18f67007f3c7aa956ad8b8f5630f762760f3bdafc4afe54f88
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dc5b8ad1d2bca225f9edf7c5860055c874ad660bf73ca561e2c5ffa7555b8f27
[INFO] running `Command { std: "docker" "start" "-a" "dc5b8ad1d2bca225f9edf7c5860055c874ad660bf73ca561e2c5ffa7555b8f27", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling cc v1.0.52
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling evdev-sys v0.2.1
[INFO] [stderr]    Compiling inotify-sys v0.1.3
[INFO] [stderr]    Compiling epoll v4.1.0
[INFO] [stderr]    Compiling inotify v0.8.2
[INFO] [stderr]    Compiling evdev-rs v0.4.0
[INFO] [stderr]    Compiling gel-o v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over a `&Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/lib.rs:181:48
[INFO] [stdout]     |
[INFO] [stdout] 181 |             for (recieved_inst, event, idx) in opt {
[INFO] [stdout]     |                                                ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 181 |             while let Some((recieved_inst, event, idx)) = opt {
[INFO] [stdout]     |             ~~~~~~~~~~~~~~~                           ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 181 |             if let Some((recieved_inst, event, idx)) = opt {
[INFO] [stdout]     |             ~~~~~~~~~~~~                           ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `Command { std: "docker" "inspect" "dc5b8ad1d2bca225f9edf7c5860055c874ad660bf73ca561e2c5ffa7555b8f27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc5b8ad1d2bca225f9edf7c5860055c874ad660bf73ca561e2c5ffa7555b8f27", kill_on_drop: false }`
[INFO] [stdout] dc5b8ad1d2bca225f9edf7c5860055c874ad660bf73ca561e2c5ffa7555b8f27
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 76d82267694de6474e70c30abad8cf7b30954cd7bfd3b2c0fd48f0b3e8ebce93
[INFO] running `Command { std: "docker" "start" "-a" "76d82267694de6474e70c30abad8cf7b30954cd7bfd3b2c0fd48f0b3e8ebce93", kill_on_drop: false }`
[INFO] [stdout] warning: for loop over a `&Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/lib.rs:181:48
[INFO] [stdout]     |
[INFO] [stdout] 181 |             for (recieved_inst, event, idx) in opt {
[INFO] [stdout]     |                                                ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 181 |             while let Some((recieved_inst, event, idx)) = opt {
[INFO] [stdout]     |             ~~~~~~~~~~~~~~~                           ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 181 |             if let Some((recieved_inst, event, idx)) = opt {
[INFO] [stdout]     |             ~~~~~~~~~~~~                           ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling gel-o v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over a `&Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/lib.rs:181:48
[INFO] [stdout]     |
[INFO] [stdout] 181 |             for (recieved_inst, event, idx) in opt {
[INFO] [stdout]     |                                                ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 181 |             while let Some((recieved_inst, event, idx)) = opt {
[INFO] [stdout]     |             ~~~~~~~~~~~~~~~                           ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 181 |             if let Some((recieved_inst, event, idx)) = opt {
[INFO] [stdout]     |             ~~~~~~~~~~~~                           ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "76d82267694de6474e70c30abad8cf7b30954cd7bfd3b2c0fd48f0b3e8ebce93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76d82267694de6474e70c30abad8cf7b30954cd7bfd3b2c0fd48f0b3e8ebce93", kill_on_drop: false }`
[INFO] [stdout] 76d82267694de6474e70c30abad8cf7b30954cd7bfd3b2c0fd48f0b3e8ebce93