[INFO] updating cached repository https://github.com/sile/rust-dawg
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5abb62747f1e9c30ff2865961b770b571422c23c
[INFO] testing sile/rust-dawg against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsile%2Frust-dawg" "/workspace/builds/worker-67/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-67/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sile/rust-dawg on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-67/source/Cargo.toml
[INFO] crate git repo https://github.com/sile/rust-dawg already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3f202f8c614177f2a25827ccb5da328a1ffcae2edbfc648149a0666669ca362b
[INFO] running `Command { std: "docker" "start" "-a" "3f202f8c614177f2a25827ccb5da328a1ffcae2edbfc648149a0666669ca362b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f202f8c614177f2a25827ccb5da328a1ffcae2edbfc648149a0666669ca362b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f202f8c614177f2a25827ccb5da328a1ffcae2edbfc648149a0666669ca362b", kill_on_drop: false }`
[INFO] [stdout] 3f202f8c614177f2a25827ccb5da328a1ffcae2edbfc648149a0666669ca362b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 86694ed0a5761907850b006da700a71b60c2f19b763ab5e08ab1827e443a837e
[INFO] running `Command { std: "docker" "start" "-a" "86694ed0a5761907850b006da700a71b60c2f19b763ab5e08ab1827e443a837e", kill_on_drop: false }`
[INFO] [stderr]    Compiling bit-vec v0.4.2
[INFO] [stderr]    Compiling byteorder v0.4.2
[INFO] [stderr]    Compiling dawg v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/binary_tree/builder.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         try!(self.insert_word(&mut root, word));
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/binary_tree/builder.rs:76:17
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 try!(self.add_new_child(&mut child, word.next(), word));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/binary_tree/node.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 | /         (self.child.as_ref().map(|n| n.addr()) == other.child.as_ref().map(|n| n.addr()) &&
[INFO] [stdout] 28 | |          self.sibling.as_ref().map(|n| n.addr()) == other.sibling.as_ref().map(|n| n.addr()) &&
[INFO] [stdout] 29 | |          self.ch == other.ch && self.is_terminal == other.is_terminal)
[INFO] [stdout]    | |______________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 27 |         self.child.as_ref().map(|n| n.addr()) == other.child.as_ref().map(|n| n.addr()) &&
[INFO] [stdout] 28 |          self.sibling.as_ref().map(|n| n.addr()) == other.sibling.as_ref().map(|n| n.addr()) &&
[INFO] [stdout] 29 |          self.ch == other.ch && self.is_terminal == other.is_terminal
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:68:36
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let mut r = BufReader::new(try!(File::open(index_file_path)));
[INFO] [stdout]    |                                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:69:26
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let node_count = try!(read_u32(&mut r)) / 8;
[INFO] [stdout]    |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:70:25
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let ext_count = try!(read_u32(&mut r)) / 4;
[INFO] [stdout]    |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:74:24
[INFO] [stdout]    |
[INFO] [stdout] 74 |             nodes.push(try!(read_u64(&mut r)));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:79:23
[INFO] [stdout]    |
[INFO] [stdout] 79 |             exts.push(try!(read_u32(&mut r)));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:87:9
[INFO] [stdout]    |
[INFO] [stdout] 87 |         try!(write_u32(&mut w, self.nodes.len() as u32 * 8));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |         try!(write_u32(&mut w, self.exts.len() as u32 * 4));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:86:36
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let mut w = BufWriter::new(try!(File::create(index_file_path)));
[INFO] [stdout]    |                                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:90:13
[INFO] [stdout]    |
[INFO] [stdout] 90 |             try!(write_u64(&mut w, *n));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:93:13
[INFO] [stdout]    |
[INFO] [stdout] 93 |             try!(write_u32(&mut w, *e));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/double_array/trie.rs:101:16
[INFO] [stdout]     |
[INFO] [stdout] 101 |     let size = try!(r.read(&mut buf));
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/double_array/trie.rs:108:16
[INFO] [stdout]     |
[INFO] [stdout] 108 |     let size = try!(r.read(&mut buf));
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::slice_unchecked`: use `get_unchecked(begin..end)` instead
[INFO] [stdout]   --> src/bin/dawg_search.rs:48:36
[INFO] [stdout]    |
[INFO] [stdout] 48 |                      unsafe { line.slice_unchecked(0, prefix_len) });
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.95s
[INFO] running `Command { std: "docker" "inspect" "86694ed0a5761907850b006da700a71b60c2f19b763ab5e08ab1827e443a837e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86694ed0a5761907850b006da700a71b60c2f19b763ab5e08ab1827e443a837e", kill_on_drop: false }`
[INFO] [stdout] 86694ed0a5761907850b006da700a71b60c2f19b763ab5e08ab1827e443a837e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 851aa1a82b053b61786bec40ac4afcfdb4d16da73cedf8c4e38a968aa22c997f
[INFO] running `Command { std: "docker" "start" "-a" "851aa1a82b053b61786bec40ac4afcfdb4d16da73cedf8c4e38a968aa22c997f", kill_on_drop: false }`
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/binary_tree/builder.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         try!(self.insert_word(&mut root, word));
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/binary_tree/builder.rs:76:17
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 try!(self.add_new_child(&mut child, word.next(), word));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/binary_tree/node.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 | /         (self.child.as_ref().map(|n| n.addr()) == other.child.as_ref().map(|n| n.addr()) &&
[INFO] [stdout] 28 | |          self.sibling.as_ref().map(|n| n.addr()) == other.sibling.as_ref().map(|n| n.addr()) &&
[INFO] [stdout] 29 | |          self.ch == other.ch && self.is_terminal == other.is_terminal)
[INFO] [stdout]    | |______________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 27 |         self.child.as_ref().map(|n| n.addr()) == other.child.as_ref().map(|n| n.addr()) &&
[INFO] [stdout] 28 |          self.sibling.as_ref().map(|n| n.addr()) == other.sibling.as_ref().map(|n| n.addr()) &&
[INFO] [stdout] 29 |          self.ch == other.ch && self.is_terminal == other.is_terminal
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:68:36
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let mut r = BufReader::new(try!(File::open(index_file_path)));
[INFO] [stdout]    |                                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:69:26
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let node_count = try!(read_u32(&mut r)) / 8;
[INFO] [stdout]    |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:70:25
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let ext_count = try!(read_u32(&mut r)) / 4;
[INFO] [stdout]    |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:74:24
[INFO] [stdout]    |
[INFO] [stdout] 74 |             nodes.push(try!(read_u64(&mut r)));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:79:23
[INFO] [stdout]    |
[INFO] [stdout] 79 |             exts.push(try!(read_u32(&mut r)));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:87:9
[INFO] [stdout]    |
[INFO] [stdout] 87 |         try!(write_u32(&mut w, self.nodes.len() as u32 * 8));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |         try!(write_u32(&mut w, self.exts.len() as u32 * 4));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:86:36
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let mut w = BufWriter::new(try!(File::create(index_file_path)));
[INFO] [stdout]    |                                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:90:13
[INFO] [stdout]    |
[INFO] [stdout] 90 |             try!(write_u64(&mut w, *n));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:93:13
[INFO] [stdout]    |
[INFO] [stdout] 93 |             try!(write_u32(&mut w, *e));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/double_array/trie.rs:101:16
[INFO] [stdout]     |
[INFO] [stdout] 101 |     let size = try!(r.read(&mut buf));
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/double_array/trie.rs:108:16
[INFO] [stdout]     |
[INFO] [stdout] 108 |     let size = try!(r.read(&mut buf));
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling dawg v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::slice_unchecked`: use `get_unchecked(begin..end)` instead
[INFO] [stdout]   --> src/bin/dawg_search.rs:48:36
[INFO] [stdout]    |
[INFO] [stdout] 48 |                      unsafe { line.slice_unchecked(0, prefix_len) });
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::slice_unchecked`: use `get_unchecked(begin..end)` instead
[INFO] [stdout]   --> src/bin/dawg_search.rs:48:36
[INFO] [stdout]    |
[INFO] [stdout] 48 |                      unsafe { line.slice_unchecked(0, prefix_len) });
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/binary_tree/builder.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         try!(self.insert_word(&mut root, word));
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/binary_tree/builder.rs:76:17
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 try!(self.add_new_child(&mut child, word.next(), word));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/binary_tree/node.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 | /         (self.child.as_ref().map(|n| n.addr()) == other.child.as_ref().map(|n| n.addr()) &&
[INFO] [stdout] 28 | |          self.sibling.as_ref().map(|n| n.addr()) == other.sibling.as_ref().map(|n| n.addr()) &&
[INFO] [stdout] 29 | |          self.ch == other.ch && self.is_terminal == other.is_terminal)
[INFO] [stdout]    | |______________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 27 |         self.child.as_ref().map(|n| n.addr()) == other.child.as_ref().map(|n| n.addr()) &&
[INFO] [stdout] 28 |          self.sibling.as_ref().map(|n| n.addr()) == other.sibling.as_ref().map(|n| n.addr()) &&
[INFO] [stdout] 29 |          self.ch == other.ch && self.is_terminal == other.is_terminal
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:68:36
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let mut r = BufReader::new(try!(File::open(index_file_path)));
[INFO] [stdout]    |                                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:69:26
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let node_count = try!(read_u32(&mut r)) / 8;
[INFO] [stdout]    |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:70:25
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let ext_count = try!(read_u32(&mut r)) / 4;
[INFO] [stdout]    |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:74:24
[INFO] [stdout]    |
[INFO] [stdout] 74 |             nodes.push(try!(read_u64(&mut r)));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:79:23
[INFO] [stdout]    |
[INFO] [stdout] 79 |             exts.push(try!(read_u32(&mut r)));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:87:9
[INFO] [stdout]    |
[INFO] [stdout] 87 |         try!(write_u32(&mut w, self.nodes.len() as u32 * 8));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |         try!(write_u32(&mut w, self.exts.len() as u32 * 4));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:86:36
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let mut w = BufWriter::new(try!(File::create(index_file_path)));
[INFO] [stdout]    |                                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:90:13
[INFO] [stdout]    |
[INFO] [stdout] 90 |             try!(write_u64(&mut w, *n));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/double_array/trie.rs:93:13
[INFO] [stdout]    |
[INFO] [stdout] 93 |             try!(write_u32(&mut w, *e));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/double_array/trie.rs:101:16
[INFO] [stdout]     |
[INFO] [stdout] 101 |     let size = try!(r.read(&mut buf));
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/double_array/trie.rs:108:16
[INFO] [stdout]     |
[INFO] [stdout] 108 |     let size = try!(r.read(&mut buf));
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.20s
[INFO] running `Command { std: "docker" "inspect" "851aa1a82b053b61786bec40ac4afcfdb4d16da73cedf8c4e38a968aa22c997f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "851aa1a82b053b61786bec40ac4afcfdb4d16da73cedf8c4e38a968aa22c997f", kill_on_drop: false }`
[INFO] [stdout] 851aa1a82b053b61786bec40ac4afcfdb4d16da73cedf8c4e38a968aa22c997f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b288f7ec758686c7fda48459bc3fa517908622a0d1a98b287647985545ec8f3b
[INFO] running `Command { std: "docker" "start" "-a" "b288f7ec758686c7fda48459bc3fa517908622a0d1a98b287647985545ec8f3b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: use of deprecated macro `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 macro `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: 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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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 macro `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: `dawg` (lib) generated 15 warnings
[INFO] [stderr] warning: `dawg` (lib test) generated 15 warnings (15 duplicates)
[INFO] [stderr] warning: use of deprecated associated function `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: `dawg` (bin "dawg_search" test) generated 1 warning
[INFO] [stderr] warning: `dawg` (bin "dawg_search") generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.47s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/dawg-bb6b8194d978f28b)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/dawg_build-f9b816ed6b5e1ee9)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/dawg_search-2c4cd904dfaa637b)
[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; finished in 0.00s
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/binary_tree.rs (/opt/rustwide/target/debug/deps/binary_tree-4ffc3dd6a3eec989)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test build ... ok
[INFO] [stdout] test search_common_prefix ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/double_array.rs (/opt/rustwide/target/debug/deps/double_array-155516677412e4cc)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test build ... ok
[INFO] [stdout] test search_common_prefix ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests dawg
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> /opt/rustwide/workdir/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: 1 warning emitted
[INFO] [stderr] 
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b288f7ec758686c7fda48459bc3fa517908622a0d1a98b287647985545ec8f3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b288f7ec758686c7fda48459bc3fa517908622a0d1a98b287647985545ec8f3b", kill_on_drop: false }`
[INFO] [stdout] b288f7ec758686c7fda48459bc3fa517908622a0d1a98b287647985545ec8f3b