[INFO] fetching crate riker-timer 0.2.4...
[INFO] checking riker-timer-0.2.4 against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] extracting crate riker-timer 0.2.4 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate riker-timer 0.2.4 on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate riker-timer 0.2.4
[INFO] finished tweaking crates.io crate riker-timer 0.2.4
[INFO] tweaked toml for crates.io crate riker-timer 0.2.4 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded riker-testkit v0.1.0
[INFO] [stderr]   Downloaded riker v0.2.4
[INFO] [stderr]   Downloaded riker-default v0.2.4
[INFO] [stderr]   Downloaded riker-mapvec v0.2.4
[INFO] [stderr]   Downloaded riker-timer v0.2.4
[INFO] [stderr]   Downloaded riker-log v0.2.4
[INFO] [stderr]   Downloaded riker-dispatcher v0.2.4
[INFO] [stderr]   Downloaded riker-deadletter v0.2.4
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "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] 8bba1cbbb25c0ffb986561b8ca4cd83e0a225c54010c664dda2bbb68d297a1b7
[INFO] running `"docker" "start" "-a" "8bba1cbbb25c0ffb986561b8ca4cd83e0a225c54010c664dda2bbb68d297a1b7"`
[INFO] [stderr]     Checking runtime-fmt v0.3.0
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking serde-hjson v0.8.2
[INFO] [stderr]     Checking riker-testkit v0.1.0
[INFO] [stderr] error[E0599]: no method named `is_xid_start` found for type `char` in the current scope
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/runtime-fmt-0.3.0/src/fmt_macros.rs:422:34
[INFO] [stderr]     |
[INFO] [stderr] 422 |             Some(&(pos, c)) if c.is_xid_start() => {
[INFO] [stderr]     |                                  ^^^^^^^^^^^^ method not found in `char`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `is_xid_continue` found for type `char` in the current scope
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/runtime-fmt-0.3.0/src/fmt_macros.rs:431:18
[INFO] [stderr]     |
[INFO] [stderr] 431 |             if c.is_xid_continue() {
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^ method not found in `char`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: could not compile `runtime-fmt`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "8bba1cbbb25c0ffb986561b8ca4cd83e0a225c54010c664dda2bbb68d297a1b7"`
[INFO] running `"docker" "rm" "-f" "8bba1cbbb25c0ffb986561b8ca4cd83e0a225c54010c664dda2bbb68d297a1b7"`
[INFO] [stdout] 8bba1cbbb25c0ffb986561b8ca4cd83e0a225c54010c664dda2bbb68d297a1b7