Nov 28 08:11:54.437 INFO documenting tiny-0.4.3 against master#6bfb46e4ac9a2704f06de1a2ff7a4612cd70c8cb for pr-55318
Nov 28 08:11:54.437 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55318/worker-5/master#6bfb46e4ac9a2704f06de1a2ff7a4612cd70c8cb:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/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 08:11:54.677 INFO [stdout] 8e50f997a89dccf58baa797217320f35705d07182dd67a4495242a6d3b36a095
Nov 28 08:11:54.679 INFO running `"docker" "start" "-a" "8e50f997a89dccf58baa797217320f35705d07182dd67a4495242a6d3b36a095"`
Nov 28 08:11:55.615 INFO [stderr] usermod: no changes
Nov 28 08:11:55.938 INFO [stderr]    Compiling termbox_simple v0.2.2
Nov 28 08:11:55.975 INFO [stderr]     Checking serde_yaml v0.7.5
Nov 28 08:11:55.987 INFO [stderr]     Checking nix v0.7.0
Nov 28 08:11:58.954 INFO [stderr]     Checking term_input v0.1.5
Nov 28 08:11:59.538 INFO [stderr]  Documenting tiny v0.4.3 (/source)
Nov 28 08:12:01.254 INFO [stderr] error[E0635]: unknown feature `alloc_system`
Nov 28 08:12:01.254 INFO [stderr]  --> src/lib.rs:2:12
Nov 28 08:12:01.254 INFO [stderr]   |
Nov 28 08:12:01.254 INFO [stderr] 2 | #![feature(alloc_system)]
Nov 28 08:12:01.254 INFO [stderr]   |            ^^^^^^^^^^^^
Nov 28 08:12:01.254 INFO [stderr] 
Nov 28 08:12:01.254 INFO [stderr] error: Compilation failed, aborting rustdoc
Nov 28 08:12:01.254 INFO [stderr] 
Nov 28 08:12:01.289 INFO [stderr] error: Could not document `tiny`.
Nov 28 08:12:01.289 INFO [stderr] 
Nov 28 08:12:01.289 INFO [stderr] Caused by:
Nov 28 08:12:01.289 INFO [stderr]   process didn't exit successfully: `rustdoc --crate-name tiny src/lib.rs --color never -o /target/doc --document-private-items -L dependency=/target/debug/deps --extern base64=/target/debug/deps/libbase64-46763fc96b7ae9dd.rmeta --extern dirs=/target/debug/deps/libdirs-3d98a43b708ad4af.rmeta --extern libc=/target/debug/deps/liblibc-0cf15a40b8f7b513.rmeta --extern mio=/target/debug/deps/libmio-8bee79f2a2d1f697.rmeta --extern native_tls=/target/debug/deps/libnative_tls-3f1a0c471c67bada.rmeta --extern net2=/target/debug/deps/libnet2-6adc11b9369d92c8.rmeta --extern notify_rust=/target/debug/deps/libnotify_rust-67b10e788c281e4f.rmeta --extern serde=/target/debug/deps/libserde-839e42c5a453b757.rmeta --extern serde_derive=/target/debug/deps/libserde_derive-6b9f28a029107369.so --extern serde_yaml=/target/debug/deps/libserde_yaml-0d1c2e58962e1512.rmeta --extern take_mut=/target/debug/deps/libtake_mut-24ce064b8fc4bb78.rmeta --extern tempfile=/target/debug/deps/libtempfile-bb000030ffa20bb7.rmeta --extern term_input=/target/debug/deps/libterm_input-98f6e899efbc8eef.rmeta --extern termbox_simple=/target/debug/deps/libtermbox_simple-f46a753a9f14257f.rmeta --extern time=/target/debug/deps/libtime-8ec55a4f55f9e446.rmeta --cap-lints=forbid` (exit code: 1)
Nov 28 08:12:01.289 INFO [stderr] su: No module specific data is present
Nov 28 08:12:01.546 INFO running `"docker" "inspect" "8e50f997a89dccf58baa797217320f35705d07182dd67a4495242a6d3b36a095"`
Nov 28 08:12:01.625 INFO running `"docker" "rm" "-f" "8e50f997a89dccf58baa797217320f35705d07182dd67a4495242a6d3b36a095"`
Nov 28 08:12:01.748 INFO [stdout] 8e50f997a89dccf58baa797217320f35705d07182dd67a4495242a6d3b36a095