[INFO] fetching crate hash_ord 0.1.10...
[INFO] testing hash_ord-0.1.10 against 1.49.0 for beta-1.50-1
[INFO] extracting crate hash_ord 0.1.10 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate hash_ord 0.1.10 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hash_ord 0.1.10
[INFO] finished tweaking crates.io crate hash_ord 0.1.10
[INFO] tweaked toml for crates.io crate hash_ord 0.1.10 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 980fcf3b8c303ad0e3e3224f3d2f95ee951bdc4f66c4e5dc25ff6100b9bfc5c8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "980fcf3b8c303ad0e3e3224f3d2f95ee951bdc4f66c4e5dc25ff6100b9bfc5c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "980fcf3b8c303ad0e3e3224f3d2f95ee951bdc4f66c4e5dc25ff6100b9bfc5c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "980fcf3b8c303ad0e3e3224f3d2f95ee951bdc4f66c4e5dc25ff6100b9bfc5c8", kill_on_drop: false }`
[INFO] [stdout] 980fcf3b8c303ad0e3e3224f3d2f95ee951bdc4f66c4e5dc25ff6100b9bfc5c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b5a29e744860548daa7e9e2780c2bf3dcf56001832351a48a0ff6139bc645f1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5b5a29e744860548daa7e9e2780c2bf3dcf56001832351a48a0ff6139bc645f1", kill_on_drop: false }`
[INFO] [stderr]    Compiling hash_ord v0.1.10 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(libc)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/ord_map.rs:1780:34
[INFO] [stdout]      |
[INFO] [stdout] 1780 |     fn next(&mut self) -> Option<(&'a K)> {
[INFO] [stdout]      |                                  ^^^^^^^ help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/ord_map.rs:1815:34
[INFO] [stdout]      |
[INFO] [stdout] 1815 |     fn next(&mut self) -> Option<(&'a V)> {
[INFO] [stdout]      |                                  ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/ord_map.rs:1850:34
[INFO] [stdout]      |
[INFO] [stdout] 1850 |     fn next(&mut self) -> Option<(&'a mut V)> {
[INFO] [stdout]      |                                  ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/hash_map.rs:204:34
[INFO] [stdout]     |
[INFO] [stdout] 204 |     fn next(&mut self) -> Option<(&'a K)> {
[INFO] [stdout]     |                                  ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/hash_map.rs:238:34
[INFO] [stdout]     |
[INFO] [stdout] 238 |     fn next(&mut self) -> Option<(&'a V)> {
[INFO] [stdout]     |                                  ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/hash_map.rs:272:34
[INFO] [stdout]     |
[INFO] [stdout] 272 |     fn next(&mut self) -> Option<(&'a mut V)> {
[INFO] [stdout]     |                                  ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/fastbin.rs:27:36
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let mut fastbin = unsafe { mem::uninitialized::<Fastbin>() };
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hash_ord`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "5b5a29e744860548daa7e9e2780c2bf3dcf56001832351a48a0ff6139bc645f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b5a29e744860548daa7e9e2780c2bf3dcf56001832351a48a0ff6139bc645f1", kill_on_drop: false }`
[INFO] [stdout] 5b5a29e744860548daa7e9e2780c2bf3dcf56001832351a48a0ff6139bc645f1