[INFO] crate html5ever 0.24.0 is already in cache
[INFO] testing html5ever-0.24.0 against beta-2019-09-28 for beta-1.39-1
[INFO] extracting crate html5ever 0.24.0 into work/builds/worker-0/source
[INFO] validating manifest of crates.io crate html5ever 0.24.0 on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate html5ever 0.24.0
[INFO] removed 3 missing tests
[INFO] finished tweaking crates.io crate html5ever 0.24.0
[INFO] tweaked toml for crates.io crate html5ever 0.24.0 written to work/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate html5ever 0.24.0 already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: An explicit [[test]] section is specified in Cargo.toml which currently
[INFO] [stderr] disables Cargo from automatically inferring other test targets.
[INFO] [stderr] This inference behavior will change in the Rust 2018 edition and the following
[INFO] [stderr] files will be included as a test target:
[INFO] [stderr] 
[INFO] [stderr] * /big/crater/work/builds/worker-0/source/tests/tree_builder.rs
[INFO] [stderr] * /big/crater/work/builds/worker-0/source/tests/tokenizer.rs
[INFO] [stderr] * /big/crater/work/builds/worker-0/source/tests/serializer.rs
[INFO] [stderr] 
[INFO] [stderr] This is likely to break cargo build or cargo test as these files may not be
[INFO] [stderr] ready to be compiled as a test target today. You can future-proof yourself
[INFO] [stderr] and disable this warning by adding `autotests = false` to your [package]
[INFO] [stderr] section. You may also move the files to a location where Cargo would not
[INFO] [stderr] automatically infer them to be a target, such as in subfolders.
[INFO] [stderr] 
[INFO] [stderr] For more information on this warning you can consult
[INFO] [stderr] https://github.com/rust-lang/cargo/issues/5330
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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-2019-09-28" "build" "--frozen"`
[INFO] [stdout] ba7a7f2fafba90e196dfdb57119594b69db65710eb7fd03bb0423bd565885d63
[INFO] running `"docker" "start" "-a" "ba7a7f2fafba90e196dfdb57119594b69db65710eb7fd03bb0423bd565885d63"`
[INFO] [stderr] warning: An explicit [[test]] section is specified in Cargo.toml which currently
[INFO] [stderr] disables Cargo from automatically inferring other test targets.
[INFO] [stderr] This inference behavior will change in the Rust 2018 edition and the following
[INFO] [stderr] files will be included as a test target:
[INFO] [stderr] 
[INFO] [stderr] * /opt/rustwide/workdir/tests/tree_builder.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/tokenizer.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/serializer.rs
[INFO] [stderr] 
[INFO] [stderr] This is likely to break cargo build or cargo test as these files may not be
[INFO] [stderr] ready to be compiled as a test target today. You can future-proof yourself
[INFO] [stderr] and disable this warning by adding `autotests = false` to your [package]
[INFO] [stderr] section. You may also move the files to a location where Cargo would not
[INFO] [stderr] automatically infer them to be a target, such as in subfolders.
[INFO] [stderr] 
[INFO] [stderr] For more information on this warning you can consult
[INFO] [stderr] https://github.com/rust-lang/cargo/issues/5330
[INFO] [stderr]    Compiling syn v0.15.40
[INFO] [stderr]    Compiling serde v1.0.97
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.2
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling string_cache v0.7.3
[INFO] [stderr]    Compiling serde_json v1.0.40
[INFO] [stderr]    Compiling serde_derive v1.0.97
[INFO] [stderr]    Compiling html5ever v0.24.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling markup5ever v0.9.0
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:107:13
[INFO] [stderr]     |
[INFO] [stderr] 107 |             try!(match c {
[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/serialize/mod.rs:139:9
[INFO] [stderr]     |
[INFO] [stderr] 139 |         try!(self.writer.write_all(b"<"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:140:9
[INFO] [stderr]     |
[INFO] [stderr] 140 |         try!(self.writer.write_all(tagname(&name).as_bytes()));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:142:13
[INFO] [stderr]     |
[INFO] [stderr] 142 |             try!(self.writer.write_all(b" "));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:146:29
[INFO] [stderr]     |
[INFO] [stderr] 146 |                 ns!(xml) => try!(self.writer.write_all(b"xml:")),
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:149:25
[INFO] [stderr]     |
[INFO] [stderr] 149 |                         try!(self.writer.write_all(b"xmlns:"));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:152:31
[INFO] [stderr]     |
[INFO] [stderr] 152 |                 ns!(xlink) => try!(self.writer.write_all(b"xlink:")),
[INFO] [stderr]     |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:156:21
[INFO] [stderr]     |
[INFO] [stderr] 156 |                     try!(self.writer.write_all(b"unknown_namespace:"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:160:13
[INFO] [stderr]     |
[INFO] [stderr] 160 |             try!(self.writer.write_all(name.local.as_bytes()));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:161:13
[INFO] [stderr]     |
[INFO] [stderr] 161 |             try!(self.writer.write_all(b"=\""));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:162:13
[INFO] [stderr]     |
[INFO] [stderr] 162 |             try!(self.write_escaped(value, true));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:163:13
[INFO] [stderr]     |
[INFO] [stderr] 163 |             try!(self.writer.write_all(b"\""));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:165:9
[INFO] [stderr]     |
[INFO] [stderr] 165 |         try!(self.writer.write_all(b">"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:214:9
[INFO] [stderr]     |
[INFO] [stderr] 214 |         try!(self.writer.write_all(b"</"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:215:9
[INFO] [stderr]     |
[INFO] [stderr] 215 |         try!(self.writer.write_all(tagname(&name).as_bytes()));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:242:9
[INFO] [stderr]     |
[INFO] [stderr] 242 |         try!(self.writer.write_all(b"<!--"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:243:9
[INFO] [stderr]     |
[INFO] [stderr] 243 |         try!(self.writer.write_all(text.as_bytes()));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:248:9
[INFO] [stderr]     |
[INFO] [stderr] 248 |         try!(self.writer.write_all(b"<!DOCTYPE "));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:249:9
[INFO] [stderr]     |
[INFO] [stderr] 249 |         try!(self.writer.write_all(name.as_bytes()));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:254:9
[INFO] [stderr]     |
[INFO] [stderr] 254 |         try!(self.writer.write_all(b"<?"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:255:9
[INFO] [stderr]     |
[INFO] [stderr] 255 |         try!(self.writer.write_all(target.as_bytes()));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:256:9
[INFO] [stderr]     |
[INFO] [stderr] 256 |         try!(self.writer.write_all(b" "));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:257:9
[INFO] [stderr]     |
[INFO] [stderr] 257 |         try!(self.writer.write_all(data.as_bytes()));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.47s
[INFO] running `"docker" "inspect" "ba7a7f2fafba90e196dfdb57119594b69db65710eb7fd03bb0423bd565885d63"`
[INFO] running `"docker" "rm" "-f" "ba7a7f2fafba90e196dfdb57119594b69db65710eb7fd03bb0423bd565885d63"`
[INFO] [stdout] ba7a7f2fafba90e196dfdb57119594b69db65710eb7fd03bb0423bd565885d63
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] a3b4cade5dd4dae5071d91087e225f89f4b6e4bc6bde271869b76b10ce4167fc
[INFO] running `"docker" "start" "-a" "a3b4cade5dd4dae5071d91087e225f89f4b6e4bc6bde271869b76b10ce4167fc"`
[INFO] [stderr] warning: An explicit [[test]] section is specified in Cargo.toml which currently
[INFO] [stderr] disables Cargo from automatically inferring other test targets.
[INFO] [stderr] This inference behavior will change in the Rust 2018 edition and the following
[INFO] [stderr] files will be included as a test target:
[INFO] [stderr] 
[INFO] [stderr] * /opt/rustwide/workdir/tests/tree_builder.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/tokenizer.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/serializer.rs
[INFO] [stderr] 
[INFO] [stderr] This is likely to break cargo build or cargo test as these files may not be
[INFO] [stderr] ready to be compiled as a test target today. You can future-proof yourself
[INFO] [stderr] and disable this warning by adding `autotests = false` to your [package]
[INFO] [stderr] section. You may also move the files to a location where Cargo would not
[INFO] [stderr] automatically infer them to be a target, such as in subfolders.
[INFO] [stderr] 
[INFO] [stderr] For more information on this warning you can consult
[INFO] [stderr] https://github.com/rust-lang/cargo/issues/5330
[INFO] [stderr]    Compiling either v1.5.2
[INFO] [stderr]    Compiling rayon-core v1.5.0
[INFO] [stderr]    Compiling typed-arena v1.4.1
[INFO] [stderr]    Compiling crossbeam-utils v0.6.5
[INFO] [stderr]    Compiling getopts v0.2.19
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling regex-automata v0.1.7
[INFO] [stderr]    Compiling rand_xoshiro v0.1.0
[INFO] [stderr]    Compiling rustc-test v0.3.0
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling tinytemplate v1.0.2
[INFO] [stderr]    Compiling itertools v0.8.0
[INFO] [stderr]    Compiling bstr v0.2.3
[INFO] [stderr]    Compiling csv-core v0.1.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.7.1
[INFO] [stderr]    Compiling crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling crossbeam-deque v0.6.3
[INFO] [stderr]    Compiling csv v1.1.1
[INFO] [stderr]    Compiling criterion-plot v0.3.1
[INFO] [stderr]    Compiling rayon v1.1.0
[INFO] [stderr]    Compiling criterion v0.2.11
[INFO] [stderr]    Compiling html5ever v0.24.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `prev_element`
[INFO] [stderr]    --> examples/print-tree-actions.rs:109:9
[INFO] [stderr]     |
[INFO] [stderr] 109 |         prev_element: &Self::Handle,
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_prev_element`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:107:13
[INFO] [stderr]     |
[INFO] [stderr] 107 |             try!(match c {
[INFO] [stderr]     |             ^^^
[INFO] [stderr]     |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]    --> src/lib.rs:12:24
[INFO] [stderr]     |
[INFO] [stderr] 12  | #![cfg_attr(test, deny(warnings))]
[INFO] [stderr]     |                        ^^^^^^^^
[INFO] [stderr]     = note: `#[warn(deprecated)]` implied by `#[warn(warnings)]`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:139:9
[INFO] [stderr]     |
[INFO] [stderr] 139 |         try!(self.writer.write_all(b"<"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:140:9
[INFO] [stderr]     |
[INFO] [stderr] 140 |         try!(self.writer.write_all(tagname(&name).as_bytes()));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:142:13
[INFO] [stderr]     |
[INFO] [stderr] 142 |             try!(self.writer.write_all(b" "));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:146:29
[INFO] [stderr]     |
[INFO] [stderr] 146 |                 ns!(xml) => try!(self.writer.write_all(b"xml:")),
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:149:25
[INFO] [stderr]     |
[INFO] [stderr] 149 |                         try!(self.writer.write_all(b"xmlns:"));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:152:31
[INFO] [stderr]     |
[INFO] [stderr] 152 |                 ns!(xlink) => try!(self.writer.write_all(b"xlink:")),
[INFO] [stderr]     |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:156:21
[INFO] [stderr]     |
[INFO] [stderr] 156 |                     try!(self.writer.write_all(b"unknown_namespace:"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:160:13
[INFO] [stderr]     |
[INFO] [stderr] 160 |             try!(self.writer.write_all(name.local.as_bytes()));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:161:13
[INFO] [stderr]     |
[INFO] [stderr] 161 |             try!(self.writer.write_all(b"=\""));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:162:13
[INFO] [stderr]     |
[INFO] [stderr] 162 |             try!(self.write_escaped(value, true));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:163:13
[INFO] [stderr]     |
[INFO] [stderr] 163 |             try!(self.writer.write_all(b"\""));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:165:9
[INFO] [stderr]     |
[INFO] [stderr] 165 |         try!(self.writer.write_all(b">"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:214:9
[INFO] [stderr]     |
[INFO] [stderr] 214 |         try!(self.writer.write_all(b"</"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:215:9
[INFO] [stderr]     |
[INFO] [stderr] 215 |         try!(self.writer.write_all(tagname(&name).as_bytes()));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:242:9
[INFO] [stderr]     |
[INFO] [stderr] 242 |         try!(self.writer.write_all(b"<!--"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:243:9
[INFO] [stderr]     |
[INFO] [stderr] 243 |         try!(self.writer.write_all(text.as_bytes()));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:248:9
[INFO] [stderr]     |
[INFO] [stderr] 248 |         try!(self.writer.write_all(b"<!DOCTYPE "));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:249:9
[INFO] [stderr]     |
[INFO] [stderr] 249 |         try!(self.writer.write_all(name.as_bytes()));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:254:9
[INFO] [stderr]     |
[INFO] [stderr] 254 |         try!(self.writer.write_all(b"<?"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:255:9
[INFO] [stderr]     |
[INFO] [stderr] 255 |         try!(self.writer.write_all(target.as_bytes()));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:256:9
[INFO] [stderr]     |
[INFO] [stderr] 256 |         try!(self.writer.write_all(b" "));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/serialize/mod.rs:257:9
[INFO] [stderr]     |
[INFO] [stderr] 257 |         try!(self.writer.write_all(data.as_bytes()));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.02s
[INFO] running `"docker" "inspect" "a3b4cade5dd4dae5071d91087e225f89f4b6e4bc6bde271869b76b10ce4167fc"`
[INFO] running `"docker" "rm" "-f" "a3b4cade5dd4dae5071d91087e225f89f4b6e4bc6bde271869b76b10ce4167fc"`
[INFO] [stdout] a3b4cade5dd4dae5071d91087e225f89f4b6e4bc6bde271869b76b10ce4167fc
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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-2019-09-28" "test" "--frozen"`
[INFO] [stdout] 5bbe27c726f810fdf1462f0273d5d8c9bd94790b2ab04fe87a3f9e2404214752
[INFO] running `"docker" "start" "-a" "5bbe27c726f810fdf1462f0273d5d8c9bd94790b2ab04fe87a3f9e2404214752"`
[INFO] [stderr] warning: An explicit [[test]] section is specified in Cargo.toml which currently
[INFO] [stderr] disables Cargo from automatically inferring other test targets.
[INFO] [stderr] This inference behavior will change in the Rust 2018 edition and the following
[INFO] [stderr] files will be included as a test target:
[INFO] [stderr] 
[INFO] [stderr] * /opt/rustwide/workdir/tests/tree_builder.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/tokenizer.rs
[INFO] [stderr] * /opt/rustwide/workdir/tests/serializer.rs
[INFO] [stderr] 
[INFO] [stderr] This is likely to break cargo build or cargo test as these files may not be
[INFO] [stderr] ready to be compiled as a test target today. You can future-proof yourself
[INFO] [stderr] and disable this warning by adding `autotests = false` to your [package]
[INFO] [stderr] section. You may also move the files to a location where Cargo would not
[INFO] [stderr] automatically infer them to be a target, such as in subfolders.
[INFO] [stderr] 
[INFO] [stderr] For more information on this warning you can consult
[INFO] [stderr] https://github.com/rust-lang/cargo/issues/5330
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.28s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/html5ever-19d25b58aeffe233
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test tokenizer::test::check_lines_with_new_line ... ok
[INFO] [stdout] test tokenizer::test::check_lines ... ok
[INFO] [stdout] test tokenizer::test::push_to_None_gives_singleton ... ok
[INFO] [stdout] test tokenizer::test::push_to_nonempty_appends ... ok
[INFO] [stdout] test tokenizer::test::push_to_empty_appends ... ok
[INFO] [stdout] test util::str::test::is_alnum_a ... ok
[INFO] [stdout] test driver::tests::from_utf8 ... ok
[INFO] [stdout] test util::str::test::is_not_alnum_symbol ... ok
[INFO] [stdout] test util::str::test::is_not_alnum_nonascii ... ok
[INFO] [stdout] test util::str::test::is_alnum_A ... ok
[INFO] [stdout] test util::str::test::is_alnum_1 ... ok
[INFO] [stdout] test util::str::test::lower_letter_a_is_a ... ok
[INFO] [stdout] test util::str::test::lower_letter_A_is_a ... ok
[INFO] [stdout] test util::str::test::lower_letter_symbol_is_None ... ok
[INFO] [stdout] test util::str::test::lower_letter_nonascii_is_None ... ok
[INFO] [stdout] test tree_builder::test::check_four_lines ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests html5ever
[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" "5bbe27c726f810fdf1462f0273d5d8c9bd94790b2ab04fe87a3f9e2404214752"`
[INFO] running `"docker" "rm" "-f" "5bbe27c726f810fdf1462f0273d5d8c9bd94790b2ab04fe87a3f9e2404214752"`
[INFO] [stdout] 5bbe27c726f810fdf1462f0273d5d8c9bd94790b2ab04fe87a3f9e2404214752