[INFO] crate trie 0.2.0 is already in cache
[INFO] checking trie-0.2.0 against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] extracting crate trie 0.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate trie 0.2.0 on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate trie 0.2.0
[INFO] finished tweaking crates.io crate trie 0.2.0
[INFO] tweaked toml for crates.io crate trie 0.2.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "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] f0fe3a04b67af7cd6c5a1bc029f6c2888613872c7f8de12752a835c13a88a31e
[INFO] running `"docker" "start" "-a" "f0fe3a04b67af7cd6c5a1bc029f6c2888613872c7f8de12752a835c13a88a31e"`
[INFO] [stderr]     Checking bit-set v0.5.1
[INFO] [stderr]     Checking ordered_iter v0.1.1
[INFO] [stderr]     Checking trie v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0499]: cannot borrow `*start_node` as mutable more than once at a time
[INFO] [stderr]    --> src/map.rs:702:24
[INFO] [stderr]     |
[INFO] [stderr] 674 | fn insert<'a, T>(count: &mut usize, start_node: &'a mut TrieNode<T>, key: usize, value: T, idx: usize)
[INFO] [stderr]     |           -- lifetime `'a` defined here
[INFO] [stderr] ...
[INFO] [stderr] 692 |         External(stored_key, ref mut stored_value) if stored_key == key => {
[INFO] [stderr]     |                              -------------------- first mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 695 |             return (stored_value, Some(old_value));
[INFO] [stderr]     |                    ------------------------------- returning this value requires that `start_node.1` is borrowed for `'a`
[INFO] [stderr] ...
[INFO] [stderr] 702 |     match mem::replace(start_node, Internal(Box::new(InternalNode::new()))) {
[INFO] [stderr]     |                        ^^^^^^^^^^ second mutable borrow occurs here
[INFO] [stderr] 
[INFO] [stderr] error[E0503]: cannot use `*start_node` because it was mutably borrowed
[INFO] [stderr]    --> src/map.rs:705:17
[INFO] [stderr]     |
[INFO] [stderr] 674 | fn insert<'a, T>(count: &mut usize, start_node: &'a mut TrieNode<T>, key: usize, value: T, idx: usize)
[INFO] [stderr]     |           -- lifetime `'a` defined here
[INFO] [stderr] ...
[INFO] [stderr] 692 |         External(stored_key, ref mut stored_value) if stored_key == key => {
[INFO] [stderr]     |                              -------------------- borrow of `start_node.1` occurs here
[INFO] [stderr] ...
[INFO] [stderr] 695 |             return (stored_value, Some(old_value));
[INFO] [stderr]     |                    ------------------------------- returning this value requires that `start_node.1` is borrowed for `'a`
[INFO] [stderr] ...
[INFO] [stderr] 705 |                 Internal(ref mut new_node) => {
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^ use of borrowed `start_node.1`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0499, E0503.
[INFO] [stderr] For more information about an error, try `rustc --explain E0499`.
[INFO] [stderr] error: could not compile `trie`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0499]: cannot borrow `*start_node` as mutable more than once at a time
[INFO] [stderr]    --> src/map.rs:702:24
[INFO] [stderr]     |
[INFO] [stderr] 674 | fn insert<'a, T>(count: &mut usize, start_node: &'a mut TrieNode<T>, key: usize, value: T, idx: usize)
[INFO] [stderr]     |           -- lifetime `'a` defined here
[INFO] [stderr] ...
[INFO] [stderr] 692 |         External(stored_key, ref mut stored_value) if stored_key == key => {
[INFO] [stderr]     |                              -------------------- first mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 695 |             return (stored_value, Some(old_value));
[INFO] [stderr]     |                    ------------------------------- returning this value requires that `start_node.1` is borrowed for `'a`
[INFO] [stderr] ...
[INFO] [stderr] 702 |     match mem::replace(start_node, Internal(Box::new(InternalNode::new()))) {
[INFO] [stderr]     |                        ^^^^^^^^^^ second mutable borrow occurs here
[INFO] [stderr] 
[INFO] [stderr] error[E0503]: cannot use `*start_node` because it was mutably borrowed
[INFO] [stderr]    --> src/map.rs:705:17
[INFO] [stderr]     |
[INFO] [stderr] 674 | fn insert<'a, T>(count: &mut usize, start_node: &'a mut TrieNode<T>, key: usize, value: T, idx: usize)
[INFO] [stderr]     |           -- lifetime `'a` defined here
[INFO] [stderr] ...
[INFO] [stderr] 692 |         External(stored_key, ref mut stored_value) if stored_key == key => {
[INFO] [stderr]     |                              -------------------- borrow of `start_node.1` occurs here
[INFO] [stderr] ...
[INFO] [stderr] 695 |             return (stored_value, Some(old_value));
[INFO] [stderr]     |                    ------------------------------- returning this value requires that `start_node.1` is borrowed for `'a`
[INFO] [stderr] ...
[INFO] [stderr] 705 |                 Internal(ref mut new_node) => {
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^ use of borrowed `start_node.1`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0499, E0503.
[INFO] [stderr] For more information about an error, try `rustc --explain E0499`.
[INFO] [stderr] error: could not compile `trie`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "f0fe3a04b67af7cd6c5a1bc029f6c2888613872c7f8de12752a835c13a88a31e"`
[INFO] running `"docker" "rm" "-f" "f0fe3a04b67af7cd6c5a1bc029f6c2888613872c7f8de12752a835c13a88a31e"`
[INFO] [stdout] f0fe3a04b67af7cd6c5a1bc029f6c2888613872c7f8de12752a835c13a88a31e
