[INFO] fetching crate redux 0.2.0...
[INFO] checking redux-0.2.0 against try#4c35efa5bf9c956a3bd39021cc9699d125584977 for pr-104746-1
[INFO] extracting crate redux 0.2.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate redux 0.2.0 on toolchain 4c35efa5bf9c956a3bd39021cc9699d125584977
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4c35efa5bf9c956a3bd39021cc9699d125584977" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate redux 0.2.0
[INFO] finished tweaking crates.io crate redux 0.2.0
[INFO] tweaked toml for crates.io crate redux 0.2.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4c35efa5bf9c956a3bd39021cc9699d125584977" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4c35efa5bf9c956a3bd39021cc9699d125584977" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+4c35efa5bf9c956a3bd39021cc9699d125584977" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 21b888d10fa52b9874cc12132a0641446e26fd5d0281535ed7f1351ef6f162d0
[INFO] running `Command { std: "docker" "start" "-a" "21b888d10fa52b9874cc12132a0641446e26fd5d0281535ed7f1351ef6f162d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "21b888d10fa52b9874cc12132a0641446e26fd5d0281535ed7f1351ef6f162d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21b888d10fa52b9874cc12132a0641446e26fd5d0281535ed7f1351ef6f162d0", kill_on_drop: false }`
[INFO] [stdout] 21b888d10fa52b9874cc12132a0641446e26fd5d0281535ed7f1351ef6f162d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+4c35efa5bf9c956a3bd39021cc9699d125584977" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca882b370236fbcbc4f017477dea7fad1e858b5a02fbba25c9043fbf3f6ba396
[INFO] running `Command { std: "docker" "start" "-a" "ca882b370236fbcbc4f017477dea7fad1e858b5a02fbba25c9043fbf3f6ba396", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]     Checking redux v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/bitio/mod.rs:177:17
[INFO] [stdout]     |
[INFO] [stdout] 177 |                 try!(self.flush_bits())
[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/codec.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |         try!(output.write_bits(if bit { 1 } else { 0 }, 1));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/codec.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |             try!(output.write_bits(if bit { 0 } else { 1 }, 1));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/codec.rs:50:46
[INFO] [stdout]    |
[INFO] [stdout] 50 |         self.pending = (self.pending << 1) | try!(input.read_bits(1)) as u64;
[INFO] [stdout]    |                                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/codec.rs:57:27
[INFO] [stdout]    |
[INFO] [stdout] 57 |         let (low, high) = try!(self.model.get_frequency(symbol));
[INFO] [stdout]    |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/codec.rs:64:16
[INFO] [stdout]    |
[INFO] [stdout] 64 |                try!(self.put_bit(false, output));
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/codec.rs:70:16
[INFO] [stdout]    |
[INFO] [stdout] 70 |                try!(self.put_bit(true, output));
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around assigned value
[INFO] [stdout]   --> src/codec.rs:77:28
[INFO] [stdout]    |
[INFO] [stdout] 77 |                self.low -= { self.model.parameters().code_one_fourth };
[INFO] [stdout]    |                            ^^                                       ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 77 -                self.low -= { self.model.parameters().code_one_fourth };
[INFO] [stdout] 77 +                self.low -= self.model.parameters().code_one_fourth;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around assigned value
[INFO] [stdout]   --> src/codec.rs:78:29
[INFO] [stdout]    |
[INFO] [stdout] 78 |                self.high -= { self.model.parameters().code_one_fourth };
[INFO] [stdout]    |                             ^^                                       ^^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 78 -                self.high -= { self.model.parameters().code_one_fourth };
[INFO] [stdout] 78 +                self.high -= self.model.parameters().code_one_fourth;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/codec.rs:98:13
[INFO] [stdout]    |
[INFO] [stdout] 98 |             try!(output.flush_bits());
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/codec.rs:94:17
[INFO] [stdout]    |
[INFO] [stdout] 94 |                 try!(self.put_bit(mask != 0, output));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/codec.rs:112:13
[INFO] [stdout]     |
[INFO] [stdout] 112 |             try!(self.compress_symbol(symbol, output));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around method argument
[INFO] [stdout]    --> src/codec.rs:106:48
[INFO] [stdout]     |
[INFO] [stdout] 106 |             let symbol = match input.read_bits({ self.model.parameters().symbol_bits }) {
[INFO] [stdout]     |                                                ^^                                   ^^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout] 106 -             let symbol = match input.read_bits({ self.model.parameters().symbol_bits }) {
[INFO] [stdout] 106 +             let symbol = match input.read_bits(self.model.parameters().symbol_bits) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/codec.rs:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |             try!(self.get_bit(input));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/codec.rs:132:35
[INFO] [stdout]     |
[INFO] [stdout] 132 |         let (symbol, low, high) = try!(self.model.get_symbol(value));
[INFO] [stdout]     |                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/codec.rs:157:13
[INFO] [stdout]     |
[INFO] [stdout] 157 |             try!(self.get_bit(input));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around assigned value
[INFO] [stdout]    --> src/codec.rs:144:33
[INFO] [stdout]     |
[INFO] [stdout] 144 |                 self.pending -= { self.model.parameters().code_half };
[INFO] [stdout]     |                                 ^^                                 ^^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout] 144 -                 self.pending -= { self.model.parameters().code_half };
[INFO] [stdout] 144 +                 self.pending -= self.model.parameters().code_half;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around assigned value
[INFO] [stdout]    --> src/codec.rs:145:29
[INFO] [stdout]     |
[INFO] [stdout] 145 |                 self.low -= { self.model.parameters().code_half };
[INFO] [stdout]     |                             ^^                                 ^^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout] 145 -                 self.low -= { self.model.parameters().code_half };
[INFO] [stdout] 145 +                 self.low -= self.model.parameters().code_half;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around assigned value
[INFO] [stdout]    --> src/codec.rs:146:30
[INFO] [stdout]     |
[INFO] [stdout] 146 |                 self.high -= { self.model.parameters().code_half };
[INFO] [stdout]     |                              ^^                                 ^^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout] 146 -                 self.high -= { self.model.parameters().code_half };
[INFO] [stdout] 146 +                 self.high -= self.model.parameters().code_half;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around assigned value
[INFO] [stdout]    --> src/codec.rs:148:33
[INFO] [stdout]     |
[INFO] [stdout] 148 |                 self.pending -= { self.model.parameters().code_one_fourth };
[INFO] [stdout]     |                                 ^^                                       ^^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout] 148 -                 self.pending -= { self.model.parameters().code_one_fourth };
[INFO] [stdout] 148 +                 self.pending -= self.model.parameters().code_one_fourth;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around assigned value
[INFO] [stdout]    --> src/codec.rs:149:29
[INFO] [stdout]     |
[INFO] [stdout] 149 |                 self.low -= { self.model.parameters().code_one_fourth };
[INFO] [stdout]     |                             ^^                                       ^^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout] 149 -                 self.low -= { self.model.parameters().code_one_fourth };
[INFO] [stdout] 149 +                 self.low -= self.model.parameters().code_one_fourth;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around assigned value
[INFO] [stdout]    --> src/codec.rs:150:30
[INFO] [stdout]     |
[INFO] [stdout] 150 |                 self.high -= { self.model.parameters().code_one_fourth };
[INFO] [stdout]     |                              ^^                                       ^^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout] 150 -                 self.high -= { self.model.parameters().code_one_fourth };
[INFO] [stdout] 150 +                 self.high -= self.model.parameters().code_one_fourth;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/codec.rs:166:26
[INFO] [stdout]     |
[INFO] [stdout] 166 |             let symbol = try!(self.decompress_symbol(input));
[INFO] [stdout]     |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/codec.rs:171:17
[INFO] [stdout]     |
[INFO] [stdout] 171 |                 try!(output.write_bits(symbol, { self.model.parameters().symbol_bits }));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around method argument
[INFO] [stdout]    --> src/codec.rs:171:48
[INFO] [stdout]     |
[INFO] [stdout] 171 |                 try!(output.write_bits(symbol, { self.model.parameters().symbol_bits }));
[INFO] [stdout]     |                                                ^^                                   ^^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout] 171 -                 try!(output.write_bits(symbol, { self.model.parameters().symbol_bits }));
[INFO] [stdout] 171 +                 try!(output.write_bits(symbol, self.model.parameters().symbol_bits));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:107:5
[INFO] [stdout]     |
[INFO] [stdout] 107 |     try!(codec.compress_stream(&mut input, &mut output));
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:118:5
[INFO] [stdout]     |
[INFO] [stdout] 118 |     try!(codec.decompress_stream(&mut input, &mut output));
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/bitio/mod.rs:58:20
[INFO] [stdout]    |
[INFO] [stdout] 58 |     input: &'a mut Read,
[INFO] [stdout]    |                    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 58 |     input: &'a mut dyn Read,
[INFO] [stdout]    |                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/bitio/mod.rs:128:21
[INFO] [stdout]     |
[INFO] [stdout] 128 |     output: &'a mut Write,
[INFO] [stdout]     |                     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 128 |     output: &'a mut dyn Write,
[INFO] [stdout]     |                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/codec.rs:23:16
[INFO] [stdout]    |
[INFO] [stdout] 23 |     model: Box<Model>,
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 23 |     model: Box<dyn Model>,
[INFO] [stdout]    |                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:102:31
[INFO] [stdout]     |
[INFO] [stdout] 102 | pub fn compress(istream: &mut io::Read, ostream: &mut io::Write, model: Box<model::Model>) -> Result<(u64, u64)> {
[INFO] [stdout]     |                               ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 102 | pub fn compress(istream: &mut dyn io::Read, ostream: &mut io::Write, model: Box<model::Model>) -> Result<(u64, u64)> {
[INFO] [stdout]     |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:102:55
[INFO] [stdout]     |
[INFO] [stdout] 102 | pub fn compress(istream: &mut io::Read, ostream: &mut io::Write, model: Box<model::Model>) -> Result<(u64, u64)> {
[INFO] [stdout]     |                                                       ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 102 | pub fn compress(istream: &mut io::Read, ostream: &mut dyn io::Write, model: Box<model::Model>) -> Result<(u64, u64)> {
[INFO] [stdout]     |                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:102:77
[INFO] [stdout]     |
[INFO] [stdout] 102 | pub fn compress(istream: &mut io::Read, ostream: &mut io::Write, model: Box<model::Model>) -> Result<(u64, u64)> {
[INFO] [stdout]     |                                                                             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 102 | pub fn compress(istream: &mut io::Read, ostream: &mut io::Write, model: Box<dyn model::Model>) -> Result<(u64, u64)> {
[INFO] [stdout]     |                                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:113:33
[INFO] [stdout]     |
[INFO] [stdout] 113 | pub fn decompress(istream: &mut io::Read, ostream: &mut io::Write, model: Box<model::Model>) -> Result<(u64, u64)> {
[INFO] [stdout]     |                                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 113 | pub fn decompress(istream: &mut dyn io::Read, ostream: &mut io::Write, model: Box<model::Model>) -> Result<(u64, u64)> {
[INFO] [stdout]     |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:113:57
[INFO] [stdout]     |
[INFO] [stdout] 113 | pub fn decompress(istream: &mut io::Read, ostream: &mut io::Write, model: Box<model::Model>) -> Result<(u64, u64)> {
[INFO] [stdout]     |                                                         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 113 | pub fn decompress(istream: &mut io::Read, ostream: &mut dyn io::Write, model: Box<model::Model>) -> Result<(u64, u64)> {
[INFO] [stdout]     |                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:113:79
[INFO] [stdout]     |
[INFO] [stdout] 113 | pub fn decompress(istream: &mut io::Read, ostream: &mut io::Write, model: Box<model::Model>) -> Result<(u64, u64)> {
[INFO] [stdout]     |                                                                               ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 113 | pub fn decompress(istream: &mut io::Read, ostream: &mut io::Write, model: Box<dyn model::Model>) -> Result<(u64, u64)> {
[INFO] [stdout]     |                                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/bitio/mod.rs:63:32
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn new(reader: &'a mut Read) -> BitReader<'a> {
[INFO] [stdout]    |                                ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 63 |     pub fn new(reader: &'a mut dyn Read) -> BitReader<'a> {
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/bitio/mod.rs:133:32
[INFO] [stdout]     |
[INFO] [stdout] 133 |     pub fn new(writer: &'a mut Write) -> BitWriter<'a> {
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 133 |     pub fn new(writer: &'a mut dyn Write) -> BitWriter<'a> {
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/codec.rs:28:23
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn new(m: Box<Model>) -> Codec {
[INFO] [stdout]    |                       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn new(m: Box<dyn Model>) -> Codec {
[INFO] [stdout]    |                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/codec.rs:39:51
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn put_bit(&mut self, bit: bool, output: &mut BitWrite) -> Result<()> {
[INFO] [stdout]    |                                                   ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn put_bit(&mut self, bit: bool, output: &mut dyn BitWrite) -> Result<()> {
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/codec.rs:49:39
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn get_bit(&mut self, input: &mut BitRead) -> Result<()> {
[INFO] [stdout]    |                                       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn get_bit(&mut self, input: &mut dyn BitRead) -> Result<()> {
[INFO] [stdout]    |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/codec.rs:55:67
[INFO] [stdout]    |
[INFO] [stdout] 55 |     pub fn compress_symbol(&mut self, symbol: usize, output: &mut BitWrite) -> Result<()> {
[INFO] [stdout]    |                                                                   ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 55 |     pub fn compress_symbol(&mut self, symbol: usize, output: &mut dyn BitWrite) -> Result<()> {
[INFO] [stdout]    |                                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/codec.rs:104:51
[INFO] [stdout]     |
[INFO] [stdout] 104 |     pub fn compress_stream(&mut self, input: &mut BitRead, output: &mut BitWrite) -> Result<()> {
[INFO] [stdout]     |                                                   ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 104 |     pub fn compress_stream(&mut self, input: &mut dyn BitRead, output: &mut BitWrite) -> Result<()> {
[INFO] [stdout]     |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/codec.rs:104:73
[INFO] [stdout]     |
[INFO] [stdout] 104 |     pub fn compress_stream(&mut self, input: &mut BitRead, output: &mut BitWrite) -> Result<()> {
[INFO] [stdout]     |                                                                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 104 |     pub fn compress_stream(&mut self, input: &mut BitRead, output: &mut dyn BitWrite) -> Result<()> {
[INFO] [stdout]     |                                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/codec.rs:123:53
[INFO] [stdout]     |
[INFO] [stdout] 123 |     pub fn decompress_symbol(&mut self, input: &mut BitRead) -> Result<usize> {
[INFO] [stdout]     |                                                     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 123 |     pub fn decompress_symbol(&mut self, input: &mut dyn BitRead) -> Result<usize> {
[INFO] [stdout]     |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/codec.rs:164:53
[INFO] [stdout]     |
[INFO] [stdout] 164 |     pub fn decompress_stream(&mut self, input: &mut BitRead, output: &mut BitWrite) -> Result<()> {
[INFO] [stdout]     |                                                     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 164 |     pub fn decompress_stream(&mut self, input: &mut dyn BitRead, output: &mut BitWrite) -> Result<()> {
[INFO] [stdout]     |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/codec.rs:164:75
[INFO] [stdout]     |
[INFO] [stdout] 164 |     pub fn decompress_stream(&mut self, input: &mut BitRead, output: &mut BitWrite) -> Result<()> {
[INFO] [stdout]     |                                                                           ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 164 |     pub fn decompress_stream(&mut self, input: &mut BitRead, output: &mut dyn BitWrite) -> Result<()> {
[INFO] [stdout]     |                                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/adaptive_linear.rs:21:38
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn new(p: Parameters) -> Box<Model> {
[INFO] [stdout]    |                                      ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn new(p: Parameters) -> Box<dyn Model> {
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/adaptive_tree.rs:36:38
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn new(p: Parameters) -> Box<Model> {
[INFO] [stdout]    |                                      ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn new(p: Parameters) -> Box<dyn Model> {
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 49 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:90:24
[INFO] [stdout]    |
[INFO] [stdout] 90 |     let mut input: Box<io::Read> = if options.is_stdin() {
[INFO] [stdout]    |                        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 90 |     let mut input: Box<dyn io::Read> = if options.is_stdin() {
[INFO] [stdout]    |                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:99:25
[INFO] [stdout]    |
[INFO] [stdout] 99 |     let mut output: Box<io::Write> = if options.is_stdout() {
[INFO] [stdout]    |                         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 99 |     let mut output: Box<dyn io::Write> = if options.is_stdout() {
[INFO] [stdout]    |                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: failed to run custom build command for `libc v0.2.137`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/libc-de9ae1dce6a72901/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rerun-if-changed=build.rs
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'Failed to get rustc version', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libc-0.2.137/build.rs:9:63
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55c1422849c0 - std::backtrace_rs::backtrace::libunwind::trace::h811febcfb6bf351b
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
[INFO] [stderr]      1:     0x55c1422849c0 - std::backtrace_rs::backtrace::trace_unsynchronized::h96b741a907b99af4
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55c1422849c0 - std::sys_common::backtrace::_print_fmt::ha31a53ff87fd209a
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/sys_common/backtrace.rs:65:5
[INFO] [stderr]      3:     0x55c1422849c0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hf3e583c2438f2a49
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stderr]      4:     0x55c1422a1a3e - core::fmt::write::h5bbd9ad31ca9656a
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/core/src/fmt/mod.rs:1208:17
[INFO] [stderr]      5:     0x55c142281f75 - std::io::Write::write_fmt::hd89bca684a701c73
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/io/mod.rs:1682:15
[INFO] [stderr]      6:     0x55c142284785 - std::sys_common::backtrace::_print::h54dbe9f97737135f
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stderr]      7:     0x55c142284785 - std::sys_common::backtrace::print::h0e49378300df2b98
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stderr]      8:     0x55c142285dcf - std::panicking::default_hook::{{closure}}::h3f37edd052a3115b
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/panicking.rs:267:22
[INFO] [stderr]      9:     0x55c142285b0a - std::panicking::default_hook::h5d6c18972d08cdf9
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/panicking.rs:286:9
[INFO] [stderr]     10:     0x55c1422864cc - std::panicking::rust_panic_with_hook::hc1a5d3b45d0a6122
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/panicking.rs:688:13
[INFO] [stderr]     11:     0x55c142286267 - std::panicking::begin_panic_handler::{{closure}}::h874739c08844ff19
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/panicking.rs:579:13
[INFO] [stderr]     12:     0x55c142284e6c - std::sys_common::backtrace::__rust_end_short_backtrace::hf48f04738ab9a35b
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/sys_common/backtrace.rs:137:18
[INFO] [stderr]     13:     0x55c142285f82 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/panicking.rs:575:5
[INFO] [stderr]     14:     0x55c14225e1c3 - core::panicking::panic_fmt::hf1cb23ab679c1d98
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/core/src/panicking.rs:65:14
[INFO] [stderr]     15:     0x55c1422a0ce1 - core::panicking::panic_display::h11909d294f7a92c9
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/core/src/panicking.rs:138:5
[INFO] [stderr]     16:     0x55c1422a0c8b - core::panicking::panic_str::h4837f1de44eef628
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/core/src/panicking.rs:122:5
[INFO] [stderr]     17:     0x55c14225e186 - core::option::expect_failed::h7b3a0cf2e88792c5
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/core/src/option.rs:1879:5
[INFO] [stderr]     18:     0x55c142267ae4 - core::option::Option<T>::expect::h9e95dfe7309741a1
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/core/src/option.rs:741:21
[INFO] [stderr]     19:     0x55c142262f8e - build_script_build::main::h82b6a350171b4c07
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libc-0.2.137/build.rs:9:41
[INFO] [stderr]     20:     0x55c1422666fb - core::ops::function::FnOnce::call_once::h92153606eb34c109
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/core/src/ops/function.rs:507:5
[INFO] [stderr]     21:     0x55c1422673ee - std::sys_common::backtrace::__rust_begin_short_backtrace::h5b6c56c9d73a516b
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/sys_common/backtrace.rs:121:18
[INFO] [stderr]     22:     0x55c142260581 - std::rt::lang_start::{{closure}}::hd6027721825c7f89
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/rt.rs:166:18
[INFO] [stderr]     23:     0x55c14227f31c - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h5b494a5e5c20b261
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/core/src/ops/function.rs:606:13
[INFO] [stderr]     24:     0x55c14227f31c - std::panicking::try::do_call::h5d51cf8602c16f4a
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/panicking.rs:483:40
[INFO] [stderr]     25:     0x55c14227f31c - std::panicking::try::h7fb476dcd351379f
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/panicking.rs:447:19
[INFO] [stderr]     26:     0x55c14227f31c - std::panic::catch_unwind::h77a54dd491b33982
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/panic.rs:137:14
[INFO] [stderr]     27:     0x55c14227f31c - std::rt::lang_start_internal::{{closure}}::ha93bba2cc6dbac5f
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/rt.rs:148:48
[INFO] [stderr]     28:     0x55c14227f31c - std::panicking::try::do_call::h13be1d7306b0159a
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/panicking.rs:483:40
[INFO] [stderr]     29:     0x55c14227f31c - std::panicking::try::heffa9c927f17c3e6
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/panicking.rs:447:19
[INFO] [stderr]     30:     0x55c14227f31c - std::panic::catch_unwind::h1126625f5de4482e
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/panic.rs:137:14
[INFO] [stderr]     31:     0x55c14227f31c - std::rt::lang_start_internal::h02f6c396aa452b3b
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/rt.rs:148:20
[INFO] [stderr]     32:     0x55c14226055a - std::rt::lang_start::h5b7b679567341b10
[INFO] [stderr]                                  at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/rt.rs:165:17
[INFO] [stderr]     33:     0x55c14226478e - main
[INFO] [stderr]     34:     0x7fbd059d9083 - __libc_start_main
[INFO] [stderr]     35:     0x55c14225e50e - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "ca882b370236fbcbc4f017477dea7fad1e858b5a02fbba25c9043fbf3f6ba396", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca882b370236fbcbc4f017477dea7fad1e858b5a02fbba25c9043fbf3f6ba396", kill_on_drop: false }`
[INFO] [stdout] ca882b370236fbcbc4f017477dea7fad1e858b5a02fbba25c9043fbf3f6ba396