[INFO] updating cached repository https://github.com/sile/rust-dawg
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5abb62747f1e9c30ff2865961b770b571422c23c
[INFO] testing sile/rust-dawg against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsile%2Frust-dawg" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sile/rust-dawg on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/sile/rust-dawg
[INFO] finished tweaking git repo https://github.com/sile/rust-dawg
[INFO] tweaked toml for git repo https://github.com/sile/rust-dawg written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/sile/rust-dawg already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-6/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2ff5a593332044b9a316f6193e4c11a8c20c26eb5075471ef20715c66b76a318
[INFO] running `"docker" "start" "-a" "2ff5a593332044b9a316f6193e4c11a8c20c26eb5075471ef20715c66b76a318"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling bit-vec v0.6.2
[INFO] [stderr]    Compiling dawg v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/binary_tree/builder.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |         try!(self.insert_word(&mut root, word));
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/binary_tree/builder.rs:76:17
[INFO] [stderr]    |
[INFO] [stderr] 76 |                 try!(self.add_new_child(&mut child, word.next(), word));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:68:36
[INFO] [stderr]    |
[INFO] [stderr] 68 |         let mut r = BufReader::new(try!(File::open(index_file_path)));
[INFO] [stderr]    |                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:69:26
[INFO] [stderr]    |
[INFO] [stderr] 69 |         let node_count = try!(read_u32(&mut r)) / 8;
[INFO] [stderr]    |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:70:25
[INFO] [stderr]    |
[INFO] [stderr] 70 |         let ext_count = try!(read_u32(&mut r)) / 4;
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:74:24
[INFO] [stderr]    |
[INFO] [stderr] 74 |             nodes.push(try!(read_u64(&mut r)));
[INFO] [stderr]    |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:79:23
[INFO] [stderr]    |
[INFO] [stderr] 79 |             exts.push(try!(read_u32(&mut r)));
[INFO] [stderr]    |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:86:36
[INFO] [stderr]    |
[INFO] [stderr] 86 |         let mut w = BufWriter::new(try!(File::create(index_file_path)));
[INFO] [stderr]    |                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:87:9
[INFO] [stderr]    |
[INFO] [stderr] 87 |         try!(write_u32(&mut w, self.nodes.len() as u32 * 8));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:88:9
[INFO] [stderr]    |
[INFO] [stderr] 88 |         try!(write_u32(&mut w, self.exts.len() as u32 * 4));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:90:13
[INFO] [stderr]    |
[INFO] [stderr] 90 |             try!(write_u64(&mut w, *n));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:93:13
[INFO] [stderr]    |
[INFO] [stderr] 93 |             try!(write_u32(&mut w, *e));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/double_array/trie.rs:101:16
[INFO] [stderr]     |
[INFO] [stderr] 101 |     let size = try!(r.read(&mut buf));
[INFO] [stderr]     |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/double_array/trie.rs:108:16
[INFO] [stderr]     |
[INFO] [stderr] 108 |     let size = try!(r.read(&mut buf));
[INFO] [stderr]     |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/binary_tree/node.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 | /         (self.child.as_ref().map(|n| n.addr()) == other.child.as_ref().map(|n| n.addr()) &&
[INFO] [stderr] 28 | |          self.sibling.as_ref().map(|n| n.addr()) == other.sibling.as_ref().map(|n| n.addr()) &&
[INFO] [stderr] 29 | |          self.ch == other.ch && self.is_terminal == other.is_terminal)
[INFO] [stderr]    | |______________________________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 27 |         self.child.as_ref().map(|n| n.addr()) == other.child.as_ref().map(|n| n.addr()) &&
[INFO] [stderr] 28 |          self.sibling.as_ref().map(|n| n.addr()) == other.sibling.as_ref().map(|n| n.addr()) &&
[INFO] [stderr] 29 |          self.ch == other.ch && self.is_terminal == other.is_terminal
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::slice_unchecked': use `get_unchecked(begin..end)` instead
[INFO] [stderr]   --> src/bin/dawg_search.rs:48:36
[INFO] [stderr]    |
[INFO] [stderr] 48 |                      unsafe { line.slice_unchecked(0, prefix_len) });
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.31s
[INFO] running `"docker" "inspect" "2ff5a593332044b9a316f6193e4c11a8c20c26eb5075471ef20715c66b76a318"`
[INFO] running `"docker" "rm" "-f" "2ff5a593332044b9a316f6193e4c11a8c20c26eb5075471ef20715c66b76a318"`
[INFO] [stdout] 2ff5a593332044b9a316f6193e4c11a8c20c26eb5075471ef20715c66b76a318
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c7a32ec2f21bb1103ade5ae537c8ff36e9fa9ae151e04d7ad1a9192222a24a1b
[INFO] running `"docker" "start" "-a" "c7a32ec2f21bb1103ade5ae537c8ff36e9fa9ae151e04d7ad1a9192222a24a1b"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling dawg v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/binary_tree/builder.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |         try!(self.insert_word(&mut root, word));
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/binary_tree/builder.rs:76:17
[INFO] [stderr]    |
[INFO] [stderr] 76 |                 try!(self.add_new_child(&mut child, word.next(), word));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:68:36
[INFO] [stderr]    |
[INFO] [stderr] 68 |         let mut r = BufReader::new(try!(File::open(index_file_path)));
[INFO] [stderr]    |                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:69:26
[INFO] [stderr]    |
[INFO] [stderr] 69 |         let node_count = try!(read_u32(&mut r)) / 8;
[INFO] [stderr]    |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:70:25
[INFO] [stderr]    |
[INFO] [stderr] 70 |         let ext_count = try!(read_u32(&mut r)) / 4;
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:74:24
[INFO] [stderr]    |
[INFO] [stderr] 74 |             nodes.push(try!(read_u64(&mut r)));
[INFO] [stderr]    |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:79:23
[INFO] [stderr]    |
[INFO] [stderr] 79 |             exts.push(try!(read_u32(&mut r)));
[INFO] [stderr]    |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:86:36
[INFO] [stderr]    |
[INFO] [stderr] 86 |         let mut w = BufWriter::new(try!(File::create(index_file_path)));
[INFO] [stderr]    |                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:87:9
[INFO] [stderr]    |
[INFO] [stderr] 87 |         try!(write_u32(&mut w, self.nodes.len() as u32 * 8));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:88:9
[INFO] [stderr]    |
[INFO] [stderr] 88 |         try!(write_u32(&mut w, self.exts.len() as u32 * 4));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:90:13
[INFO] [stderr]    |
[INFO] [stderr] 90 |             try!(write_u64(&mut w, *n));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:93:13
[INFO] [stderr]    |
[INFO] [stderr] 93 |             try!(write_u32(&mut w, *e));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/double_array/trie.rs:101:16
[INFO] [stderr]     |
[INFO] [stderr] 101 |     let size = try!(r.read(&mut buf));
[INFO] [stderr]     |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/double_array/trie.rs:108:16
[INFO] [stderr]     |
[INFO] [stderr] 108 |     let size = try!(r.read(&mut buf));
[INFO] [stderr]     |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/binary_tree/node.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 | /         (self.child.as_ref().map(|n| n.addr()) == other.child.as_ref().map(|n| n.addr()) &&
[INFO] [stderr] 28 | |          self.sibling.as_ref().map(|n| n.addr()) == other.sibling.as_ref().map(|n| n.addr()) &&
[INFO] [stderr] 29 | |          self.ch == other.ch && self.is_terminal == other.is_terminal)
[INFO] [stderr]    | |______________________________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 27 |         self.child.as_ref().map(|n| n.addr()) == other.child.as_ref().map(|n| n.addr()) &&
[INFO] [stderr] 28 |          self.sibling.as_ref().map(|n| n.addr()) == other.sibling.as_ref().map(|n| n.addr()) &&
[INFO] [stderr] 29 |          self.ch == other.ch && self.is_terminal == other.is_terminal
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::slice_unchecked': use `get_unchecked(begin..end)` instead
[INFO] [stderr]   --> src/bin/dawg_search.rs:48:36
[INFO] [stderr]    |
[INFO] [stderr] 48 |                      unsafe { line.slice_unchecked(0, prefix_len) });
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/binary_tree/builder.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |         try!(self.insert_word(&mut root, word));
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/binary_tree/builder.rs:76:17
[INFO] [stderr]    |
[INFO] [stderr] 76 |                 try!(self.add_new_child(&mut child, word.next(), word));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:68:36
[INFO] [stderr]    |
[INFO] [stderr] 68 |         let mut r = BufReader::new(try!(File::open(index_file_path)));
[INFO] [stderr]    |                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:69:26
[INFO] [stderr]    |
[INFO] [stderr] 69 |         let node_count = try!(read_u32(&mut r)) / 8;
[INFO] [stderr]    |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:70:25
[INFO] [stderr]    |
[INFO] [stderr] 70 |         let ext_count = try!(read_u32(&mut r)) / 4;
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:74:24
[INFO] [stderr]    |
[INFO] [stderr] 74 |             nodes.push(try!(read_u64(&mut r)));
[INFO] [stderr]    |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:79:23
[INFO] [stderr]    |
[INFO] [stderr] 79 |             exts.push(try!(read_u32(&mut r)));
[INFO] [stderr]    |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:86:36
[INFO] [stderr]    |
[INFO] [stderr] 86 |         let mut w = BufWriter::new(try!(File::create(index_file_path)));
[INFO] [stderr]    |                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:87:9
[INFO] [stderr]    |
[INFO] [stderr] 87 |         try!(write_u32(&mut w, self.nodes.len() as u32 * 8));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:88:9
[INFO] [stderr]    |
[INFO] [stderr] 88 |         try!(write_u32(&mut w, self.exts.len() as u32 * 4));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:90:13
[INFO] [stderr]    |
[INFO] [stderr] 90 |             try!(write_u64(&mut w, *n));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:93:13
[INFO] [stderr]    |
[INFO] [stderr] 93 |             try!(write_u32(&mut w, *e));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/double_array/trie.rs:101:16
[INFO] [stderr]     |
[INFO] [stderr] 101 |     let size = try!(r.read(&mut buf));
[INFO] [stderr]     |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/double_array/trie.rs:108:16
[INFO] [stderr]     |
[INFO] [stderr] 108 |     let size = try!(r.read(&mut buf));
[INFO] [stderr]     |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/binary_tree/node.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 | /         (self.child.as_ref().map(|n| n.addr()) == other.child.as_ref().map(|n| n.addr()) &&
[INFO] [stderr] 28 | |          self.sibling.as_ref().map(|n| n.addr()) == other.sibling.as_ref().map(|n| n.addr()) &&
[INFO] [stderr] 29 | |          self.ch == other.ch && self.is_terminal == other.is_terminal)
[INFO] [stderr]    | |______________________________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 27 |         self.child.as_ref().map(|n| n.addr()) == other.child.as_ref().map(|n| n.addr()) &&
[INFO] [stderr] 28 |          self.sibling.as_ref().map(|n| n.addr()) == other.sibling.as_ref().map(|n| n.addr()) &&
[INFO] [stderr] 29 |          self.ch == other.ch && self.is_terminal == other.is_terminal
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::slice_unchecked': use `get_unchecked(begin..end)` instead
[INFO] [stderr]   --> src/bin/dawg_search.rs:48:36
[INFO] [stderr]    |
[INFO] [stderr] 48 |                      unsafe { line.slice_unchecked(0, prefix_len) });
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.32s
[INFO] running `"docker" "inspect" "c7a32ec2f21bb1103ade5ae537c8ff36e9fa9ae151e04d7ad1a9192222a24a1b"`
[INFO] running `"docker" "rm" "-f" "c7a32ec2f21bb1103ade5ae537c8ff36e9fa9ae151e04d7ad1a9192222a24a1b"`
[INFO] [stdout] c7a32ec2f21bb1103ade5ae537c8ff36e9fa9ae151e04d7ad1a9192222a24a1b
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bc2a34ad09cc0f87d5012dd1feda4c3ee481f32161eb5db0bdc1df7707dffce7
[INFO] running `"docker" "start" "-a" "bc2a34ad09cc0f87d5012dd1feda4c3ee481f32161eb5db0bdc1df7707dffce7"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/binary_tree/builder.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |         try!(self.insert_word(&mut root, word));
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/binary_tree/builder.rs:76:17
[INFO] [stderr]    |
[INFO] [stderr] 76 |                 try!(self.add_new_child(&mut child, word.next(), word));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:68:36
[INFO] [stderr]    |
[INFO] [stderr] 68 |         let mut r = BufReader::new(try!(File::open(index_file_path)));
[INFO] [stderr]    |                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:69:26
[INFO] [stderr]    |
[INFO] [stderr] 69 |         let node_count = try!(read_u32(&mut r)) / 8;
[INFO] [stderr]    |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:70:25
[INFO] [stderr]    |
[INFO] [stderr] 70 |         let ext_count = try!(read_u32(&mut r)) / 4;
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:74:24
[INFO] [stderr]    |
[INFO] [stderr] 74 |             nodes.push(try!(read_u64(&mut r)));
[INFO] [stderr]    |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:79:23
[INFO] [stderr]    |
[INFO] [stderr] 79 |             exts.push(try!(read_u32(&mut r)));
[INFO] [stderr]    |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:86:36
[INFO] [stderr]    |
[INFO] [stderr] 86 |         let mut w = BufWriter::new(try!(File::create(index_file_path)));
[INFO] [stderr]    |                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:87:9
[INFO] [stderr]    |
[INFO] [stderr] 87 |         try!(write_u32(&mut w, self.nodes.len() as u32 * 8));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:88:9
[INFO] [stderr]    |
[INFO] [stderr] 88 |         try!(write_u32(&mut w, self.exts.len() as u32 * 4));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:90:13
[INFO] [stderr]    |
[INFO] [stderr] 90 |             try!(write_u64(&mut w, *n));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:93:13
[INFO] [stderr]    |
[INFO] [stderr] 93 |             try!(write_u32(&mut w, *e));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/double_array/trie.rs:101:16
[INFO] [stderr]     |
[INFO] [stderr] 101 |     let size = try!(r.read(&mut buf));
[INFO] [stderr]     |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/double_array/trie.rs:108:16
[INFO] [stderr]     |
[INFO] [stderr] 108 |     let size = try!(r.read(&mut buf));
[INFO] [stderr]     |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/binary_tree/node.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 | /         (self.child.as_ref().map(|n| n.addr()) == other.child.as_ref().map(|n| n.addr()) &&
[INFO] [stderr] 28 | |          self.sibling.as_ref().map(|n| n.addr()) == other.sibling.as_ref().map(|n| n.addr()) &&
[INFO] [stderr] 29 | |          self.ch == other.ch && self.is_terminal == other.is_terminal)
[INFO] [stderr]    | |______________________________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 27 |         self.child.as_ref().map(|n| n.addr()) == other.child.as_ref().map(|n| n.addr()) &&
[INFO] [stderr] 28 |          self.sibling.as_ref().map(|n| n.addr()) == other.sibling.as_ref().map(|n| n.addr()) &&
[INFO] [stderr] 29 |          self.ch == other.ch && self.is_terminal == other.is_terminal
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/binary_tree/builder.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |         try!(self.insert_word(&mut root, word));
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/binary_tree/builder.rs:76:17
[INFO] [stderr]    |
[INFO] [stderr] 76 |                 try!(self.add_new_child(&mut child, word.next(), word));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:68:36
[INFO] [stderr]    |
[INFO] [stderr] 68 |         let mut r = BufReader::new(try!(File::open(index_file_path)));
[INFO] [stderr]    |                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:69:26
[INFO] [stderr]    |
[INFO] [stderr] 69 |         let node_count = try!(read_u32(&mut r)) / 8;
[INFO] [stderr]    |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:70:25
[INFO] [stderr]    |
[INFO] [stderr] 70 |         let ext_count = try!(read_u32(&mut r)) / 4;
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:74:24
[INFO] [stderr]    |
[INFO] [stderr] 74 |             nodes.push(try!(read_u64(&mut r)));
[INFO] [stderr]    |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:79:23
[INFO] [stderr]    |
[INFO] [stderr] 79 |             exts.push(try!(read_u32(&mut r)));
[INFO] [stderr]    |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:86:36
[INFO] [stderr]    |
[INFO] [stderr] 86 |         let mut w = BufWriter::new(try!(File::create(index_file_path)));
[INFO] [stderr]    |                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:87:9
[INFO] [stderr]    |
[INFO] [stderr] 87 |         try!(write_u32(&mut w, self.nodes.len() as u32 * 8));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:88:9
[INFO] [stderr]    |
[INFO] [stderr] 88 |         try!(write_u32(&mut w, self.exts.len() as u32 * 4));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:90:13
[INFO] [stderr]    |
[INFO] [stderr] 90 |             try!(write_u64(&mut w, *n));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/double_array/trie.rs:93:13
[INFO] [stderr]    |
[INFO] [stderr] 93 |             try!(write_u32(&mut w, *e));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/double_array/trie.rs:101:16
[INFO] [stderr]     |
[INFO] [stderr] 101 |     let size = try!(r.read(&mut buf));
[INFO] [stderr]     |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/double_array/trie.rs:108:16
[INFO] [stderr]     |
[INFO] [stderr] 108 |     let size = try!(r.read(&mut buf));
[INFO] [stderr]     |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/binary_tree/node.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 | /         (self.child.as_ref().map(|n| n.addr()) == other.child.as_ref().map(|n| n.addr()) &&
[INFO] [stderr] 28 | |          self.sibling.as_ref().map(|n| n.addr()) == other.sibling.as_ref().map(|n| n.addr()) &&
[INFO] [stderr] 29 | |          self.ch == other.ch && self.is_terminal == other.is_terminal)
[INFO] [stderr]    | |______________________________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 27 |         self.child.as_ref().map(|n| n.addr()) == other.child.as_ref().map(|n| n.addr()) &&
[INFO] [stderr] 28 |          self.sibling.as_ref().map(|n| n.addr()) == other.sibling.as_ref().map(|n| n.addr()) &&
[INFO] [stderr] 29 |          self.ch == other.ch && self.is_terminal == other.is_terminal
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::slice_unchecked': use `get_unchecked(begin..end)` instead
[INFO] [stderr]   --> src/bin/dawg_search.rs:48:36
[INFO] [stderr]    |
[INFO] [stderr] 48 |                      unsafe { line.slice_unchecked(0, prefix_len) });
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::slice_unchecked': use `get_unchecked(begin..end)` instead
[INFO] [stderr]   --> src/bin/dawg_search.rs:48:36
[INFO] [stderr]    |
[INFO] [stderr] 48 |                      unsafe { line.slice_unchecked(0, prefix_len) });
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/dawg-1542fd25b3c36c30
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/dawg_build-ccb05e2025dc16ab
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/dawg_search-9daf3c1e86749998
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/binary_tree-85cd8aadea4e5436
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/double_array-2aca6a3a771225e8
[INFO] [stdout] running 2 tests
[INFO] [stdout] test search_common_prefix ... ok
[INFO] [stdout] test build ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test build ... ok
[INFO] [stdout] test search_common_prefix ... ok
[INFO] [stderr]    Doc-tests dawg
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "bc2a34ad09cc0f87d5012dd1feda4c3ee481f32161eb5db0bdc1df7707dffce7"`
[INFO] running `"docker" "rm" "-f" "bc2a34ad09cc0f87d5012dd1feda4c3ee481f32161eb5db0bdc1df7707dffce7"`
[INFO] [stdout] bc2a34ad09cc0f87d5012dd1feda4c3ee481f32161eb5db0bdc1df7707dffce7