Nov 28 14:11:30.523 INFO documenting futures-zipkin-0.4.0 against master#6bfb46e4ac9a2704f06de1a2ff7a4612cd70c8cb for pr-55318
Nov 28 14:11:30.523 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55318/worker-4/master#6bfb46e4ac9a2704f06de1a2ff7a4612cd70c8cb:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-55318/master#6bfb46e4ac9a2704f06de1a2ff7a4612cd70c8cb:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +6bfb46e4ac9a2704f06de1a2ff7a4612cd70c8cb-alt doc --frozen --no-deps --document-private-items" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 28 14:11:30.815 INFO [stdout] 4bc88b7ddf9556f0a3453348710795d2e6e2f8921249495f9a87bdbca054e3b8
Nov 28 14:11:30.817 INFO running `"docker" "start" "-a" "4bc88b7ddf9556f0a3453348710795d2e6e2f8921249495f9a87bdbca054e3b8"`
Nov 28 14:11:31.499 INFO [stderr] usermod: no changes
Nov 28 14:11:31.592 INFO [stderr]     Checking zipkin-types v0.1.0
Nov 28 14:11:31.592 INFO [stderr]     Checking thread-local-object v0.1.0
Nov 28 14:11:32.193 INFO [stderr]     Checking zipkin v0.3.2
Nov 28 14:11:33.116 INFO [stderr]  Documenting futures-zipkin v0.4.0 (/source)
Nov 28 14:11:35.300 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.78s
Nov 28 14:11:35.305 INFO [stderr] su: No module specific data is present
Nov 28 14:11:35.619 INFO running `"docker" "inspect" "4bc88b7ddf9556f0a3453348710795d2e6e2f8921249495f9a87bdbca054e3b8"`
Nov 28 14:11:35.736 INFO running `"docker" "rm" "-f" "4bc88b7ddf9556f0a3453348710795d2e6e2f8921249495f9a87bdbca054e3b8"`
Nov 28 14:11:35.844 INFO [stdout] 4bc88b7ddf9556f0a3453348710795d2e6e2f8921249495f9a87bdbca054e3b8