[INFO] updating cached repository https://github.com/hukumka/interactives
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f8fd54ec762fcf4aece15bc0be52234f8fbbf392
[INFO] checking hukumka/interactives against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhukumka%2Finteractives" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hukumka/interactives on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/hukumka/interactives
[INFO] finished tweaking git repo https://github.com/hukumka/interactives
[INFO] tweaked toml for git repo https://github.com/hukumka/interactives written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3df584be07f0e7ce3ea20eefe277dbeb65c91c205731f3095808cc0a84741313
[INFO] running `"docker" "start" "-a" "3df584be07f0e7ce3ea20eefe277dbeb65c91c205731f3095808cc0a84741313"`
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking serde_json v1.0.52
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking hamt-rs v0.3.0
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking handlebars v1.1.0
[INFO] [stderr]     Checking interactive_c v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/syntax_tree.rs:854:17
[INFO] [stderr]      |
[INFO] [stderr] 854  |             let mut $walker_name = _tree.walker();
[INFO] [stderr]      |                 ----^^^^^^^^^^^^
[INFO] [stderr]      |                 |
[INFO] [stderr]      |                 help: remove this `mut`
[INFO] [stderr] ...
[INFO] [stderr] 1398 |         new_walker!{let mut walker = "int x=0; int x(int a){return a + 4; for(int i=0; i<a; ++i) a += 3 * 4;}";}
[INFO] [stderr]      |         -------------------------------------------------------------------------------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.24s
[INFO] running `"docker" "inspect" "3df584be07f0e7ce3ea20eefe277dbeb65c91c205731f3095808cc0a84741313"`
[INFO] running `"docker" "rm" "-f" "3df584be07f0e7ce3ea20eefe277dbeb65c91c205731f3095808cc0a84741313"`
[INFO] [stdout] 3df584be07f0e7ce3ea20eefe277dbeb65c91c205731f3095808cc0a84741313