[INFO] updating cached repository https://github.com/lumasepa/j2_render
[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] 479e3c5129d9fdaf14a1a47c25a75aa76b30d92a
[INFO] checking lumasepa/j2_render against master#3dbade652ed8ebac70f903e01f51cd92c4e4302c for pr-69880
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flumasepa%2Fj2_render" "/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/lumasepa/j2_render on toolchain 3dbade652ed8ebac70f903e01f51cd92c4e4302c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/lumasepa/j2_render
[INFO] finished tweaking git repo https://github.com/lumasepa/j2_render
[INFO] tweaked toml for git repo https://github.com/lumasepa/j2_render written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/lumasepa/j2_render already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "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] 10ff1847e07e1c06c81684d6a6b3d8edf0715f14419c8e7e42dc99b29d901cd0
[INFO] running `"docker" "start" "-a" "10ff1847e07e1c06c81684d6a6b3d8edf0715f14419c8e7e42dc99b29d901cd0"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking serde_yaml v0.8.9
[INFO] [stderr]     Checking toml v0.5.3
[INFO] [stderr]     Checking error-chain v0.12.1
[INFO] [stderr]     Checking molysite v0.1.0 (https://github.com/evq/molysite#49fceec9)
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling pest_generator v2.1.0
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking tera v0.11.20
[INFO] [stderr]     Checking j2_render v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> src/main.rs:86:38
[INFO] [stderr]    |
[INFO] [stderr] 86 |                 if let Some((format, key)) = extract_format(key) {
[INFO] [stderr]    |                                      ^^^ help: consider prefixing with an underscore: `_key`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> src/main.rs:86:38
[INFO] [stderr]    |
[INFO] [stderr] 86 |                 if let Some((format, key)) = extract_format(key) {
[INFO] [stderr]    |                                      ^^^ help: consider prefixing with an underscore: `_key`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.86s
[INFO] running `"docker" "inspect" "10ff1847e07e1c06c81684d6a6b3d8edf0715f14419c8e7e42dc99b29d901cd0"`
[INFO] running `"docker" "rm" "-f" "10ff1847e07e1c06c81684d6a6b3d8edf0715f14419c8e7e42dc99b29d901cd0"`
[INFO] [stdout] 10ff1847e07e1c06c81684d6a6b3d8edf0715f14419c8e7e42dc99b29d901cd0