[INFO] fetching crate quickjs_regex_derive 0.1.2...
[INFO] testing quickjs_regex_derive-0.1.2 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-8
[INFO] extracting crate quickjs_regex_derive 0.1.2 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate quickjs_regex_derive 0.1.2
[INFO] finished tweaking crates.io crate quickjs_regex_derive 0.1.2
[INFO] tweaked toml for crates.io crate quickjs_regex_derive 0.1.2 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate quickjs_regex_derive 0.1.2 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 24 packages to latest compatible versions
[INFO] [stderr]       Adding proc-macro-crate v1.3.1 (available: v3.4.0)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.110)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2cbe8d0989eb5eb9f776e5c0a3b2f27fb97b20df0914548fa9ccbc72e0587ffd
[INFO] running `Command { std: "docker" "start" "-a" "2cbe8d0989eb5eb9f776e5c0a3b2f27fb97b20df0914548fa9ccbc72e0587ffd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2cbe8d0989eb5eb9f776e5c0a3b2f27fb97b20df0914548fa9ccbc72e0587ffd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cbe8d0989eb5eb9f776e5c0a3b2f27fb97b20df0914548fa9ccbc72e0587ffd", kill_on_drop: false }`
[INFO] [stdout] 2cbe8d0989eb5eb9f776e5c0a3b2f27fb97b20df0914548fa9ccbc72e0587ffd
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d5618692f1a1a7e97ca762a5a64e9b8bcfb28313efaf3521972ac7881c6dc6c
[INFO] running `Command { std: "docker" "start" "-a" "2d5618692f1a1a7e97ca762a5a64e9b8bcfb28313efaf3521972ac7881c6dc6c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling jobserver v0.1.34
[INFO] [stderr]    Compiling cc v1.2.45
[INFO] [stderr]    Compiling quickjs_regex_backend v0.1.0
[INFO] [stderr]    Compiling quickjs_regex_derive v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/lib.rs:21:15
[INFO] [stdout]    |
[INFO] [stdout] 21 |     for ch in param.chars().next() {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to iterate over `param.chars()` remove the call to `next`
[INFO] [stdout]    |
[INFO] [stdout] 21 -     for ch in param.chars().next() {
[INFO] [stdout] 21 +     for ch in param.chars().by_ref() {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 21 -     for ch in param.chars().next() {
[INFO] [stdout] 21 +     if let Some(ch) = param.chars().next() {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.87s
[INFO] running `Command { std: "docker" "inspect" "2d5618692f1a1a7e97ca762a5a64e9b8bcfb28313efaf3521972ac7881c6dc6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d5618692f1a1a7e97ca762a5a64e9b8bcfb28313efaf3521972ac7881c6dc6c", kill_on_drop: false }`
[INFO] [stdout] 2d5618692f1a1a7e97ca762a5a64e9b8bcfb28313efaf3521972ac7881c6dc6c
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e267f7ea9bf282d3622b154e0a0535d5bf7d1f7e1bc5ce129fad749f860fd19
[INFO] running `Command { std: "docker" "start" "-a" "6e267f7ea9bf282d3622b154e0a0535d5bf7d1f7e1bc5ce129fad749f860fd19", kill_on_drop: false }`
[INFO] [stderr]    Compiling quickjs_regex_derive v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/lib.rs:21:15
[INFO] [stdout]    |
[INFO] [stdout] 21 |     for ch in param.chars().next() {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to iterate over `param.chars()` remove the call to `next`
[INFO] [stdout]    |
[INFO] [stdout] 21 -     for ch in param.chars().next() {
[INFO] [stdout] 21 +     for ch in param.chars().by_ref() {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 21 -     for ch in param.chars().next() {
[INFO] [stdout] 21 +     if let Some(ch) = param.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/lib.rs:21:15
[INFO] [stdout]    |
[INFO] [stdout] 21 |     for ch in param.chars().next() {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to iterate over `param.chars()` remove the call to `next`
[INFO] [stdout]    |
[INFO] [stdout] 21 -     for ch in param.chars().next() {
[INFO] [stdout] 21 +     for ch in param.chars().by_ref() {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 21 -     for ch in param.chars().next() {
[INFO] [stdout] 21 +     if let Some(ch) = param.chars().next() {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "6e267f7ea9bf282d3622b154e0a0535d5bf7d1f7e1bc5ce129fad749f860fd19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e267f7ea9bf282d3622b154e0a0535d5bf7d1f7e1bc5ce129fad749f860fd19", kill_on_drop: false }`
[INFO] [stdout] 6e267f7ea9bf282d3622b154e0a0535d5bf7d1f7e1bc5ce129fad749f860fd19
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 41cc8babdd880b178fc10f19ab5b313b5896910d8fbbca2609ee8a6539fc2505
[INFO] running `Command { std: "docker" "start" "-a" "41cc8babdd880b178fc10f19ab5b313b5896910d8fbbca2609ee8a6539fc2505", kill_on_drop: false }`
[INFO] [stderr] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stderr]   --> src/lib.rs:21:15
[INFO] [stderr]    |
[INFO] [stderr] 21 |     for ch in param.chars().next() {
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stderr] help: to iterate over `param.chars()` remove the call to `next`
[INFO] [stderr]    |
[INFO] [stderr] 21 -     for ch in param.chars().next() {
[INFO] [stderr] 21 +     for ch in param.chars().by_ref() {
[INFO] [stderr]    |
[INFO] [stderr] help: consider using `if let` to clear intent
[INFO] [stderr]    |
[INFO] [stderr] 21 -     for ch in param.chars().next() {
[INFO] [stderr] 21 +     if let Some(ch) = param.chars().next() {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `quickjs_regex_derive` (lib) generated 1 warning
[INFO] [stderr] warning: `quickjs_regex_derive` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/quickjs_regex_derive-aaebaae2a9536af9)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests quickjs_regex_derive
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "41cc8babdd880b178fc10f19ab5b313b5896910d8fbbca2609ee8a6539fc2505", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41cc8babdd880b178fc10f19ab5b313b5896910d8fbbca2609ee8a6539fc2505", kill_on_drop: false }`
[INFO] [stdout] 41cc8babdd880b178fc10f19ab5b313b5896910d8fbbca2609ee8a6539fc2505