[INFO] crate riker-log 0.2.4 is already in cache
[INFO] checking riker-log-0.2.4 against master#4007d4ef26eab44bdabc2b7574d032152264d3ad for pr-66919
[INFO] extracting crate riker-log 0.2.4 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate riker-log 0.2.4 on toolchain 4007d4ef26eab44bdabc2b7574d032152264d3ad
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4007d4ef26eab44bdabc2b7574d032152264d3ad" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate riker-log 0.2.4
[INFO] finished tweaking crates.io crate riker-log 0.2.4
[INFO] tweaked toml for crates.io crate riker-log 0.2.4 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4007d4ef26eab44bdabc2b7574d032152264d3ad" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4007d4ef26eab44bdabc2b7574d032152264d3ad" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+4007d4ef26eab44bdabc2b7574d032152264d3ad" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e282f26804ea9bf03fa5fc1dc3f53a7a1b63f28d5cb3c9849f7fd8ef25e4690d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "e282f26804ea9bf03fa5fc1dc3f53a7a1b63f28d5cb3c9849f7fd8ef25e4690d"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking runtime-fmt v0.3.0
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking uuid v0.6.5
[INFO] [stderr]     Checking serde-hjson v0.8.2
[INFO] [stderr]     Checking chrono v0.4.10
[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" "e282f26804ea9bf03fa5fc1dc3f53a7a1b63f28d5cb3c9849f7fd8ef25e4690d"`
[INFO] running `"docker" "rm" "-f" "e282f26804ea9bf03fa5fc1dc3f53a7a1b63f28d5cb3c9849f7fd8ef25e4690d"`
[INFO] [stdout] e282f26804ea9bf03fa5fc1dc3f53a7a1b63f28d5cb3c9849f7fd8ef25e4690d