[INFO] fetching crate glast 0.1.0...
[INFO] building glast-0.1.0 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] extracting crate glast 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate glast 0.1.0 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 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-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "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: v2.6.0)
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 2d91bf0de7cd49b3366e285cc036fba8930262421644338a129d0df5a343b53c
[INFO] running `Command { std: "docker" "start" "-a" "2d91bf0de7cd49b3366e285cc036fba8930262421644338a129d0df5a343b53c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d91bf0de7cd49b3366e285cc036fba8930262421644338a129d0df5a343b53c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d91bf0de7cd49b3366e285cc036fba8930262421644338a129d0df5a343b53c", kill_on_drop: false }`
[INFO] [stdout] 2d91bf0de7cd49b3366e285cc036fba8930262421644338a129d0df5a343b53c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 8b37256f17f4d2c6ef6fa4768dddb0072cdea06cb6a327adaf382f135fd0393a
[INFO] running `Command { std: "docker" "start" "-a" "8b37256f17f4d2c6ef6fa4768dddb0072cdea06cb6a327adaf382f135fd0393a", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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.by_ref() {
[INFO] [stdout]     |                                      ~~~~~~~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[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 2.29s
[INFO] running `Command { std: "docker" "inspect" "8b37256f17f4d2c6ef6fa4768dddb0072cdea06cb6a327adaf382f135fd0393a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b37256f17f4d2c6ef6fa4768dddb0072cdea06cb6a327adaf382f135fd0393a", kill_on_drop: false }`
[INFO] [stdout] 8b37256f17f4d2c6ef6fa4768dddb0072cdea06cb6a327adaf382f135fd0393a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 68a671575ead9ff08ac6fcd1b680ebf758997dfe8d12a3195d0ac7c5bdfcda8a
[INFO] running `Command { std: "docker" "start" "-a" "68a671575ead9ff08ac6fcd1b680ebf758997dfe8d12a3195d0ac7c5bdfcda8a", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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.by_ref() {
[INFO] [stdout]     |                                      ~~~~~~~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[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.by_ref() {
[INFO] [stdout]     |                                      ~~~~~~~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 627 |                     if let Some(char) = chars.next() {
[INFO] [stdout]     |                     ~~~~~~~~~~~~    ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.89s
[INFO] running `Command { std: "docker" "inspect" "68a671575ead9ff08ac6fcd1b680ebf758997dfe8d12a3195d0ac7c5bdfcda8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68a671575ead9ff08ac6fcd1b680ebf758997dfe8d12a3195d0ac7c5bdfcda8a", kill_on_drop: false }`
[INFO] [stdout] 68a671575ead9ff08ac6fcd1b680ebf758997dfe8d12a3195d0ac7c5bdfcda8a