[INFO] fetching crate glast 0.1.0...
[INFO] checking glast-0.1.0 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate glast 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate glast 0.1.0
[INFO] finished tweaking crates.io crate glast 0.1.0
[INFO] tweaked toml for crates.io crate glast 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate glast 0.1.0 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 1 package to latest compatible version
[INFO] [stderr]       Adding bitflags v1.3.2 (available: v2.9.3)
[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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 9a227b6be6439e744d58c94c496f50a820d05a99ec049d1b5ae8d737d0a1f064
[INFO] running `Command { std: "docker" "start" "-a" "9a227b6be6439e744d58c94c496f50a820d05a99ec049d1b5ae8d737d0a1f064", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a227b6be6439e744d58c94c496f50a820d05a99ec049d1b5ae8d737d0a1f064", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a227b6be6439e744d58c94c496f50a820d05a99ec049d1b5ae8d737d0a1f064", kill_on_drop: false }`
[INFO] [stdout] 9a227b6be6439e744d58c94c496f50a820d05a99ec049d1b5ae8d737d0a1f064
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] adf9ddf990c00a690481060029006196a0fc75c6138b2ea320b2f9cdb6f6f8ed
[INFO] running `Command { std: "docker" "start" "-a" "adf9ddf990c00a690481060029006196a0fc75c6138b2ea320b2f9cdb6f6f8ed", kill_on_drop: false }`
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking glast v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/lexer/preprocessor.rs:627:18
[INFO] [stdout]     |
[INFO] [stdout] 627 |                     for char in chars.next() {
[INFO] [stdout]     |                                 ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to iterate over `chars` remove the call to `next`
[INFO] [stdout]     |
[INFO] [stdout] 627 -                     for char in chars.next() {
[INFO] [stdout] 627 +                     for char in chars.by_ref() {
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 627 -                     for char in chars.next() {
[INFO] [stdout] 627 +                     if let Some(char) = chars.next() {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/lexer/preprocessor.rs:627:18
[INFO] [stdout]     |
[INFO] [stdout] 627 |                     for char in chars.next() {
[INFO] [stdout]     |                                 ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to iterate over `chars` remove the call to `next`
[INFO] [stdout]     |
[INFO] [stdout] 627 -                     for char in chars.next() {
[INFO] [stdout] 627 +                     for char in chars.by_ref() {
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 627 -                     for char in chars.next() {
[INFO] [stdout] 627 +                     if let Some(char) = chars.next() {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.97s
[INFO] running `Command { std: "docker" "inspect" "adf9ddf990c00a690481060029006196a0fc75c6138b2ea320b2f9cdb6f6f8ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adf9ddf990c00a690481060029006196a0fc75c6138b2ea320b2f9cdb6f6f8ed", kill_on_drop: false }`
[INFO] [stdout] adf9ddf990c00a690481060029006196a0fc75c6138b2ea320b2f9cdb6f6f8ed