[INFO] fetching crate weezl 0.0.1...
[INFO] testing weezl-0.0.1 against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] extracting crate weezl 0.0.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate weezl 0.0.1 on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate weezl 0.0.1
[INFO] finished tweaking crates.io crate weezl 0.0.1
[INFO] tweaked toml for crates.io crate weezl 0.0.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate weezl 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0219d2d4167921032f487837c8bae4a245228935ab513245bc604231ad219451
[INFO] running `Command { std: "docker" "start" "-a" "0219d2d4167921032f487837c8bae4a245228935ab513245bc604231ad219451", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0219d2d4167921032f487837c8bae4a245228935ab513245bc604231ad219451", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0219d2d4167921032f487837c8bae4a245228935ab513245bc604231ad219451", kill_on_drop: false }`
[INFO] [stdout] 0219d2d4167921032f487837c8bae4a245228935ab513245bc604231ad219451
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f7b3ceb18dfc8d6e33e8e65d3c775f20d8b9567fee9adeeef5039c3c20367c82
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f7b3ceb18dfc8d6e33e8e65d3c775f20d8b9567fee9adeeef5039c3c20367c82", kill_on_drop: false }`
[INFO] [stderr]    Compiling weezl v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lzw.rs:346:5
[INFO] [stdout]     |
[INFO] [stdout] 346 |     try!(w.write_bits(dict.clear_code(), code_size));
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lzw.rs:353:17
[INFO] [stdout]     |
[INFO] [stdout] 353 |                 try!(w.write_bits(code, code_size));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lzw.rs:367:13
[INFO] [stdout]     |
[INFO] [stdout] 367 |             try!(w.write_bits(dict.clear_code(), code_size));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lzw.rs:373:9
[INFO] [stdout]     |
[INFO] [stdout] 373 |         try!(w.write_bits(code, code_size));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lzw.rs:375:5
[INFO] [stdout]     |
[INFO] [stdout] 375 |     try!(w.write_bits(dict.end_code(), code_size));
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lzw.rs:376:5
[INFO] [stdout]     |
[INFO] [stdout] 376 |     try!(w.flush());
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lzw.rs:399:9
[INFO] [stdout]     |
[INFO] [stdout] 399 |         try!(w.write_bits(dict.clear_code(), code_size));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lzw.rs:425:21
[INFO] [stdout]     |
[INFO] [stdout] 425 |                     try!(w.write_bits(code, *code_size));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lzw.rs:439:17
[INFO] [stdout]     |
[INFO] [stdout] 439 |                 try!(w.write_bits(dict.clear_code(), *code_size));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/bitstream.rs:154:17
[INFO] [stdout]     |
[INFO] [stdout] 154 |                   try!(self.write_bits(byte as u16, 8))
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] ...
[INFO] [stdout] 174 | / define_bit_writers!{
[INFO] [stdout] 175 | |     LsbWriter, #[doc = "Writes bits to a byte stream, LSB first."];
[INFO] [stdout] 176 | |     MsbWriter, #[doc = "Writes bits to a byte stream, MSB first."];
[INFO] [stdout] 177 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/bitstream.rs:163:13
[INFO] [stdout]     |
[INFO] [stdout] 163 |               try!(self.write_bits(0, missing));
[INFO] [stdout]     |               ^^^
[INFO] [stdout] ...
[INFO] [stdout] 174 | / define_bit_writers!{
[INFO] [stdout] 175 | |     LsbWriter, #[doc = "Writes bits to a byte stream, LSB first."];
[INFO] [stdout] 176 | |     MsbWriter, #[doc = "Writes bits to a byte stream, MSB first."];
[INFO] [stdout] 177 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/bitstream.rs:185:13
[INFO] [stdout]     |
[INFO] [stdout] 185 |             try!(self.w.write_all(&[self.acc as u8]));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/bitstream.rs:201:13
[INFO] [stdout]     |
[INFO] [stdout] 201 |             try!(self.w.write_all(&[(self.acc >> 24) as u8]));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/lzw.rs:8:21
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::{Read, Write};
[INFO] [stdout]   |                     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.03s
[INFO] running `Command { std: "docker" "inspect" "f7b3ceb18dfc8d6e33e8e65d3c775f20d8b9567fee9adeeef5039c3c20367c82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7b3ceb18dfc8d6e33e8e65d3c775f20d8b9567fee9adeeef5039c3c20367c82", kill_on_drop: false }`
[INFO] [stdout] f7b3ceb18dfc8d6e33e8e65d3c775f20d8b9567fee9adeeef5039c3c20367c82
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b6b152c8dcf41600e91b1dc8bbf7508f8448f9ee8c3c8d4a5888cb20e8f5c936
[INFO] running `Command { std: "docker" "start" "-a" "b6b152c8dcf41600e91b1dc8bbf7508f8448f9ee8c3c8d4a5888cb20e8f5c936", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling rayon-core v1.7.1
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling serde_json v1.0.55
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling oorandom v11.1.2
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lzw.rs:346:5
[INFO] [stdout]     |
[INFO] [stdout] 346 |     try!(w.write_bits(dict.clear_code(), code_size));
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lzw.rs:353:17
[INFO] [stdout]     |
[INFO] [stdout] 353 |                 try!(w.write_bits(code, code_size));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lzw.rs:367:13
[INFO] [stdout]     |
[INFO] [stdout] 367 |             try!(w.write_bits(dict.clear_code(), code_size));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lzw.rs:373:9
[INFO] [stdout]     |
[INFO] [stdout] 373 |         try!(w.write_bits(code, code_size));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lzw.rs:375:5
[INFO] [stdout]     |
[INFO] [stdout] 375 |     try!(w.write_bits(dict.end_code(), code_size));
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lzw.rs:376:5
[INFO] [stdout]     |
[INFO] [stdout] 376 |     try!(w.flush());
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lzw.rs:399:9
[INFO] [stdout]     |
[INFO] [stdout] 399 |         try!(w.write_bits(dict.clear_code(), code_size));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lzw.rs:425:21
[INFO] [stdout]     |
[INFO] [stdout] 425 |                     try!(w.write_bits(code, *code_size));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lzw.rs:439:17
[INFO] [stdout]     |
[INFO] [stdout] 439 |                 try!(w.write_bits(dict.clear_code(), *code_size));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/bitstream.rs:154:17
[INFO] [stdout]     |
[INFO] [stdout] 154 |                   try!(self.write_bits(byte as u16, 8))
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] ...
[INFO] [stdout] 174 | / define_bit_writers!{
[INFO] [stdout] 175 | |     LsbWriter, #[doc = "Writes bits to a byte stream, LSB first."];
[INFO] [stdout] 176 | |     MsbWriter, #[doc = "Writes bits to a byte stream, MSB first."];
[INFO] [stdout] 177 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/bitstream.rs:163:13
[INFO] [stdout]     |
[INFO] [stdout] 163 |               try!(self.write_bits(0, missing));
[INFO] [stdout]     |               ^^^
[INFO] [stdout] ...
[INFO] [stdout] 174 | / define_bit_writers!{
[INFO] [stdout] 175 | |     LsbWriter, #[doc = "Writes bits to a byte stream, LSB first."];
[INFO] [stdout] 176 | |     MsbWriter, #[doc = "Writes bits to a byte stream, MSB first."];
[INFO] [stdout] 177 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/bitstream.rs:185:13
[INFO] [stdout]     |
[INFO] [stdout] 185 |             try!(self.w.write_all(&[self.acc as u8]));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/bitstream.rs:201:13
[INFO] [stdout]     |
[INFO] [stdout] 201 |             try!(self.w.write_all(&[(self.acc >> 24) as u8]));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/lzw.rs:8:21
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::{Read, Write};
[INFO] [stdout]   |                     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rayon v1.3.1
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]    Compiling clap v2.33.1
[INFO] [stderr]    Compiling plotters v0.2.15
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling bstr v0.2.13
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling criterion-plot v0.4.2
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling tinytemplate v1.1.0
[INFO] [stderr]    Compiling csv v1.1.3
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling criterion v0.3.2
[INFO] [stderr]    Compiling weezl v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `lzw`
[INFO] [stdout]  --> examples/lzw-decompress.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate lzw;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `lzw`
[INFO] [stdout]  --> examples/lzw-compress.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate lzw;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `weezl`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lzw.rs:346:5
[INFO] [stdout]     |
[INFO] [stdout] 346 |     try!(w.write_bits(dict.clear_code(), code_size));
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lzw.rs:353:17
[INFO] [stdout]     |
[INFO] [stdout] 353 |                 try!(w.write_bits(code, code_size));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lzw.rs:367:13
[INFO] [stdout]     |
[INFO] [stdout] 367 |             try!(w.write_bits(dict.clear_code(), code_size));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lzw.rs:373:9
[INFO] [stdout]     |
[INFO] [stdout] 373 |         try!(w.write_bits(code, code_size));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lzw.rs:375:5
[INFO] [stdout]     |
[INFO] [stdout] 375 |     try!(w.write_bits(dict.end_code(), code_size));
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lzw.rs:376:5
[INFO] [stdout]     |
[INFO] [stdout] 376 |     try!(w.flush());
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lzw.rs:399:9
[INFO] [stdout]     |
[INFO] [stdout] 399 |         try!(w.write_bits(dict.clear_code(), code_size));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lzw.rs:425:21
[INFO] [stdout]     |
[INFO] [stdout] 425 |                     try!(w.write_bits(code, *code_size));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lzw.rs:439:17
[INFO] [stdout]     |
[INFO] [stdout] 439 |                 try!(w.write_bits(dict.clear_code(), *code_size));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/bitstream.rs:154:17
[INFO] [stdout]     |
[INFO] [stdout] 154 |                   try!(self.write_bits(byte as u16, 8))
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] ...
[INFO] [stdout] 174 | / define_bit_writers!{
[INFO] [stdout] 175 | |     LsbWriter, #[doc = "Writes bits to a byte stream, LSB first."];
[INFO] [stdout] 176 | |     MsbWriter, #[doc = "Writes bits to a byte stream, MSB first."];
[INFO] [stdout] 177 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/bitstream.rs:163:13
[INFO] [stdout]     |
[INFO] [stdout] 163 |               try!(self.write_bits(0, missing));
[INFO] [stdout]     |               ^^^
[INFO] [stdout] ...
[INFO] [stdout] 174 | / define_bit_writers!{
[INFO] [stdout] 175 | |     LsbWriter, #[doc = "Writes bits to a byte stream, LSB first."];
[INFO] [stdout] 176 | |     MsbWriter, #[doc = "Writes bits to a byte stream, MSB first."];
[INFO] [stdout] 177 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/bitstream.rs:185:13
[INFO] [stdout]     |
[INFO] [stdout] 185 |             try!(self.w.write_all(&[self.acc as u8]));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/bitstream.rs:201:13
[INFO] [stdout]     |
[INFO] [stdout] 201 |             try!(self.w.write_all(&[(self.acc >> 24) as u8]));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/lzw.rs:8:21
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::{Read, Write};
[INFO] [stdout]   |                     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "b6b152c8dcf41600e91b1dc8bbf7508f8448f9ee8c3c8d4a5888cb20e8f5c936", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6b152c8dcf41600e91b1dc8bbf7508f8448f9ee8c3c8d4a5888cb20e8f5c936", kill_on_drop: false }`
[INFO] [stdout] b6b152c8dcf41600e91b1dc8bbf7508f8448f9ee8c3c8d4a5888cb20e8f5c936