[INFO] cloning repository https://github.com/hjiayz/quickjs_regex
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hjiayz/quickjs_regex" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhjiayz%2Fquickjs_regex", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhjiayz%2Fquickjs_regex'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0d1f715aebc69b70bfc3f9a6509415891bb94175
[INFO] checking hjiayz/quickjs_regex against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhjiayz%2Fquickjs_regex" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/hjiayz/quickjs_regex
[INFO] finished tweaking git repo https://github.com/hjiayz/quickjs_regex
[INFO] tweaked toml for git repo https://github.com/hjiayz/quickjs_regex written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/hjiayz/quickjs_regex on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/hjiayz/quickjs_regex 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" "+b1f2594eac607c1f051534800237eeedb5590a49" "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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2872b35ef8faa337072dd3aecde47a09d0fdf5182c7f283d8dc4a31214bd67d3
[INFO] running `Command { std: "docker" "start" "-a" "2872b35ef8faa337072dd3aecde47a09d0fdf5182c7f283d8dc4a31214bd67d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2872b35ef8faa337072dd3aecde47a09d0fdf5182c7f283d8dc4a31214bd67d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2872b35ef8faa337072dd3aecde47a09d0fdf5182c7f283d8dc4a31214bd67d3", kill_on_drop: false }`
[INFO] [stdout] 2872b35ef8faa337072dd3aecde47a09d0fdf5182c7f283d8dc4a31214bd67d3
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] baa15f90924632ab5244c8ab37d10ab75ad5ffaf2e17028c45bdd03f3e56a9a5
[INFO] running `Command { std: "docker" "start" "-a" "baa15f90924632ab5244c8ab37d10ab75ad5ffaf2e17028c45bdd03f3e56a9a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.103
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling serde_json v1.0.69
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking plotters-backend v0.3.2
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking plotters-svg v0.3.1
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking proc-macro2 v1.0.32
[INFO] [stderr]     Checking plotters v0.3.1
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling jobserver v0.1.24
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking criterion-plot v0.4.4
[INFO] [stderr]     Checking quote v1.0.10
[INFO] [stderr]     Checking rayon v1.5.1
[INFO] [stderr]    Compiling quickjs_regex_backend v0.1.0 (/opt/rustwide/workdir/quickjs_regex_backend)
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling proc-macro-crate v1.1.0
[INFO] [stderr]     Checking quickjs_regex_derive v0.1.2 (/opt/rustwide/workdir/quickjs_regex_derive)
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> quickjs_regex_derive/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]   --> quickjs_regex_derive/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]   --> quickjs_regex_derive/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]     Checking quickjs_regex v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking criterion v0.3.5
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 35.30s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.5
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 5`
[INFO] running `Command { std: "docker" "inspect" "baa15f90924632ab5244c8ab37d10ab75ad5ffaf2e17028c45bdd03f3e56a9a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "baa15f90924632ab5244c8ab37d10ab75ad5ffaf2e17028c45bdd03f3e56a9a5", kill_on_drop: false }`
[INFO] [stdout] baa15f90924632ab5244c8ab37d10ab75ad5ffaf2e17028c45bdd03f3e56a9a5