[INFO] updating cached repository https://github.com/danielschemmel/drsat
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9b61bf57d84caa5800084df3a4e587c74480b6c5
[INFO] checking danielschemmel/drsat against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanielschemmel%2Fdrsat" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/danielschemmel/drsat on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/danielschemmel/drsat
[INFO] finished tweaking git repo https://github.com/danielschemmel/drsat
[INFO] tweaked toml for git repo https://github.com/danielschemmel/drsat written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/danielschemmel/drsat already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0e5f1d73a74d2c6770bde4bc500e316a1c16b583ff0164b5da62611fb0eae661
[INFO] running `"docker" "start" "-a" "0e5f1d73a74d2c6770bde4bc500e316a1c16b583ff0164b5da62611fb0eae661"`
[INFO] [stderr]    Compiling cc v1.0.22
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling cfg-if v0.1.5
[INFO] [stderr]    Compiling rustc-demangle v0.1.9
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling openssl-probe v0.1.2
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]    Compiling url v1.7.1
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]    Compiling log v0.4.4
[INFO] [stderr]    Compiling filetime v0.2.1
[INFO] [stderr]    Compiling cmake v0.1.33
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]    Compiling libz-sys v1.0.20
[INFO] [stderr]    Compiling openssl-sys v0.9.35
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling curl-sys v0.4.8
[INFO] [stderr]    Compiling libssh2-sys v0.2.10
[INFO] [stderr]    Compiling libgit2-sys v0.7.7
[INFO] [stderr]    Compiling miniz-sys v0.1.10
[INFO] [stderr]    Compiling lzma-sys v0.1.10
[INFO] [stderr]    Compiling bzip2-sys v0.1.6
[INFO] [stderr]     Checking xz2 v0.1.5
[INFO] [stderr]    Compiling backtrace v0.3.9
[INFO] [stderr]     Checking flate2 v1.0.2
[INFO] [stderr]     Checking bzip2 v0.3.3
[INFO] [stderr]    Compiling error-chain v0.12.0
[INFO] [stderr]    Compiling git2 v0.7.5
[INFO] [stderr]    Compiling drsat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> build.rs:13:2
[INFO] [stderr]    |
[INFO] [stderr] 13 |       error_chain! {
[INFO] [stderr]    |  _____^
[INFO] [stderr] 14 | |         foreign_links {
[INFO] [stderr] 15 | |             Io(::std::io::Error);
[INFO] [stderr] 16 | |             Git(::git2::Error);
[INFO] [stderr] ...  |
[INFO] [stderr] 22 | |         }
[INFO] [stderr] 23 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> build.rs:13:2
[INFO] [stderr]    |
[INFO] [stderr] 13 |       error_chain! {
[INFO] [stderr]    |  _____^
[INFO] [stderr] 14 | |         foreign_links {
[INFO] [stderr] 15 | |             Io(::std::io::Error);
[INFO] [stderr] 16 | |             Git(::git2::Error);
[INFO] [stderr] ...  |
[INFO] [stderr] 22 | |         }
[INFO] [stderr] 23 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> build.rs:13:2
[INFO] [stderr]    |
[INFO] [stderr] 13 |       error_chain! {
[INFO] [stderr]    |  _____^
[INFO] [stderr] 14 | |         foreign_links {
[INFO] [stderr] 15 | |             Io(::std::io::Error);
[INFO] [stderr] 16 | |             Git(::git2::Error);
[INFO] [stderr] ...  |
[INFO] [stderr] 22 | |         }
[INFO] [stderr] 23 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cnf/literal.rs:33:54
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub fn print<T: ::std::fmt::Display>(&self, f: &mut io::Write, name: &T) -> io::Result<()> {
[INFO] [stderr]    |                                                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cnf/clause.rs:72:54
[INFO] [stderr]    |
[INFO] [stderr] 72 |     pub fn print<T: ::std::fmt::Display>(&self, f: &mut io::Write, variable_names: &IndexedVec<VariableId, T>) -> io::Result<()> {
[INFO] [stderr]    |                                                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/cnf/problem/print.rs:8:35
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn print(&self, writer: &mut io::Write) -> io::Result<()> {
[INFO] [stderr]   |                                      ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cnf/problem/print.rs:17:41
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn print_model(&self, writer: &mut io::Write, indent: &str) -> io::Result<()> {
[INFO] [stderr]    |                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cnf/problem/print.rs:26:43
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn print_clauses(&self, writer: &mut io::Write) -> io::Result<()> {
[INFO] [stderr]    |                                              ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cnf/problem/print.rs:39:50
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub fn print_conflict_histo(&self, writer: &mut io::Write) -> io::Result<()> {
[INFO] [stderr]    |                                                     ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cnf/problem/print.rs:51:42
[INFO] [stderr]    |
[INFO] [stderr] 51 |     pub fn print_dimacs(&self, writer: &mut io::Write) -> io::Result<()> {
[INFO] [stderr]    |                                             ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/cnf/util.rs:5:28
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn print_stats(f: &mut io::Write, indent: &str) -> io::Result<()> {
[INFO] [stderr]   |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/driver/stats.rs:20:18
[INFO] [stderr]    |
[INFO] [stderr] 20 | fn print(f: &mut Write) -> Result<()> {
[INFO] [stderr]    |                  ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/gp/ast/util.rs:4:28
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn print_stats(f: &mut Write, indent: &str) -> Result<(), Error> {
[INFO] [stderr]   |                            ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/io/open.rs:10:44
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub fn open_file(path: &str) -> Result<Box<BufRead>> {
[INFO] [stderr]    |                                            ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser/dimacs.rs:12:25
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn skip_ws(reader: &mut BufRead) -> Result<()> {
[INFO] [stderr]    |                         ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser/dimacs.rs:32:31
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn skip_past_eol(reader: &mut BufRead) -> Result<()> {
[INFO] [stderr]    |                               ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser/dimacs.rs:50:31
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn skip_comments(reader: &mut BufRead) -> Result<()> {
[INFO] [stderr]    |                               ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser/dimacs.rs:68:29
[INFO] [stderr]    |
[INFO] [stderr] 68 | fn parse_usize(reader: &mut BufRead) -> Result<usize> {
[INFO] [stderr]    |                             ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/parser/dimacs.rs:107:30
[INFO] [stderr]     |
[INFO] [stderr] 107 | fn parse_header(reader: &mut BufRead) -> Result<(usize, usize)> {
[INFO] [stderr]     |                              ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/parser/dimacs.rs:131:32
[INFO] [stderr]     |
[INFO] [stderr] 131 | fn parse_variable(reader: &mut BufRead) -> Result<(usize, bool)> {
[INFO] [stderr]     |                                ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/parser/dimacs.rs:145:30
[INFO] [stderr]     |
[INFO] [stderr] 145 | fn parse_clause(reader: &mut BufRead, builder: &mut ProblemBuilder<usize>) -> Result<()> {
[INFO] [stderr]     |                              ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/parser/dimacs.rs:163:27
[INFO] [stderr]     |
[INFO] [stderr] 163 | pub fn parse(reader: &mut BufRead) -> Result<Problem<usize>> {
[INFO] [stderr]     |                           ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser/npn.rs:12:25
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn skip_ws(reader: &mut BufRead) -> Result<()> {
[INFO] [stderr]    |                         ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser/npn.rs:32:31
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn skip_past_eol(reader: &mut BufRead) -> Result<()> {
[INFO] [stderr]    |                               ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser/npn.rs:50:31
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn skip_comments(reader: &mut BufRead) -> Result<()> {
[INFO] [stderr]    |                               ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser/npn.rs:68:29
[INFO] [stderr]    |
[INFO] [stderr] 68 | fn parse_usize(reader: &mut BufRead) -> Result<usize> {
[INFO] [stderr]    |                             ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/parser/npn.rs:107:30
[INFO] [stderr]     |
[INFO] [stderr] 107 | fn parse_header(reader: &mut BufRead) -> Result<(usize, usize)> {
[INFO] [stderr]     |                              ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/parser/npn.rs:131:32
[INFO] [stderr]     |
[INFO] [stderr] 131 | fn parse_variable(reader: &mut BufRead) -> Result<(usize, bool)> {
[INFO] [stderr]     |                                ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/parser/npn.rs:145:30
[INFO] [stderr]     |
[INFO] [stderr] 145 | fn parse_clause(reader: &mut BufRead, builder: &mut ProblemBuilder<usize>) -> Result<()> {
[INFO] [stderr]     |                              ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/parser/npn.rs:163:27
[INFO] [stderr]     |
[INFO] [stderr] 163 | pub fn parse(reader: &mut BufRead) -> Result<Problem<usize>> {
[INFO] [stderr]     |                           ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/parser/sudoku.rs:7:27
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn parse(reader: &mut Read, rows: usize, cols: usize) -> Result<Board> {
[INFO] [stderr]   |                           ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/sudoku/board.rs:256:42
[INFO] [stderr]     |
[INFO] [stderr] 256 |     pub fn print_dimacs(&self, writer: &mut io::Write) -> io::Result<()> {
[INFO] [stderr]     |                                             ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/util/indexed_vec.rs:136:19
[INFO] [stderr]     |
[INFO] [stderr] 136 |         (&self.data as &fmt::Debug).fmt(f)
[INFO] [stderr]     |                         ^^^^^^^^^^ help: use `dyn`: `dyn fmt::Debug`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/driver/errors.rs:4:1
[INFO] [stderr]    |
[INFO] [stderr] 4  | / error_chain! {
[INFO] [stderr] 5  | |     links {
[INFO] [stderr] 6  | |         Io(::io::errors::Error, ::io::errors::ErrorKind);
[INFO] [stderr] 7  | |     }
[INFO] [stderr] ...  |
[INFO] [stderr] 17 | |     }
[INFO] [stderr] 18 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/driver/errors.rs:4:1
[INFO] [stderr]    |
[INFO] [stderr] 4  | / error_chain! {
[INFO] [stderr] 5  | |     links {
[INFO] [stderr] 6  | |         Io(::io::errors::Error, ::io::errors::ErrorKind);
[INFO] [stderr] 7  | |     }
[INFO] [stderr] ...  |
[INFO] [stderr] 17 | |     }
[INFO] [stderr] 18 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]  --> src/io/errors.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | / error_chain! {
[INFO] [stderr] 4 | |     foreign_links {
[INFO] [stderr] 5 | |         Io(io::Error);
[INFO] [stderr] 6 | |     }
[INFO] [stderr] 7 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/parser/errors.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  | / error_chain! {
[INFO] [stderr] 2  | |         foreign_links {
[INFO] [stderr] 3  | |             Io(::std::io::Error);
[INFO] [stderr] 4  | |         }
[INFO] [stderr] ...  |
[INFO] [stderr] 33 | |         }
[INFO] [stderr] 34 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cnf/literal.rs:33:54
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub fn print<T: ::std::fmt::Display>(&self, f: &mut io::Write, name: &T) -> io::Result<()> {
[INFO] [stderr]    |                                                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cnf/clause.rs:72:54
[INFO] [stderr]    |
[INFO] [stderr] 72 |     pub fn print<T: ::std::fmt::Display>(&self, f: &mut io::Write, variable_names: &IndexedVec<VariableId, T>) -> io::Result<()> {
[INFO] [stderr]    |                                                         ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/cnf/problem/print.rs:8:35
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn print(&self, writer: &mut io::Write) -> io::Result<()> {
[INFO] [stderr]   |                                      ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cnf/problem/print.rs:17:41
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn print_model(&self, writer: &mut io::Write, indent: &str) -> io::Result<()> {
[INFO] [stderr]    |                                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cnf/problem/print.rs:26:43
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn print_clauses(&self, writer: &mut io::Write) -> io::Result<()> {
[INFO] [stderr]    |                                              ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cnf/problem/print.rs:39:50
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub fn print_conflict_histo(&self, writer: &mut io::Write) -> io::Result<()> {
[INFO] [stderr]    |                                                     ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cnf/problem/print.rs:51:42
[INFO] [stderr]    |
[INFO] [stderr] 51 |     pub fn print_dimacs(&self, writer: &mut io::Write) -> io::Result<()> {
[INFO] [stderr]    |                                             ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/cnf/util.rs:5:28
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn print_stats(f: &mut io::Write, indent: &str) -> io::Result<()> {
[INFO] [stderr]   |                            ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/driver/stats.rs:20:18
[INFO] [stderr]    |
[INFO] [stderr] 20 | fn print(f: &mut Write) -> Result<()> {
[INFO] [stderr]    |                  ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/gp/ast/util.rs:4:28
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn print_stats(f: &mut Write, indent: &str) -> Result<(), Error> {
[INFO] [stderr]   |                            ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/io/open.rs:10:44
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub fn open_file(path: &str) -> Result<Box<BufRead>> {
[INFO] [stderr]    |                                            ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser/dimacs.rs:12:25
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn skip_ws(reader: &mut BufRead) -> Result<()> {
[INFO] [stderr]    |                         ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser/dimacs.rs:32:31
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn skip_past_eol(reader: &mut BufRead) -> Result<()> {
[INFO] [stderr]    |                               ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser/dimacs.rs:50:31
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn skip_comments(reader: &mut BufRead) -> Result<()> {
[INFO] [stderr]    |                               ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser/dimacs.rs:68:29
[INFO] [stderr]    |
[INFO] [stderr] 68 | fn parse_usize(reader: &mut BufRead) -> Result<usize> {
[INFO] [stderr]    |                             ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/parser/dimacs.rs:107:30
[INFO] [stderr]     |
[INFO] [stderr] 107 | fn parse_header(reader: &mut BufRead) -> Result<(usize, usize)> {
[INFO] [stderr]     |                              ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/parser/dimacs.rs:131:32
[INFO] [stderr]     |
[INFO] [stderr] 131 | fn parse_variable(reader: &mut BufRead) -> Result<(usize, bool)> {
[INFO] [stderr]     |                                ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/parser/dimacs.rs:145:30
[INFO] [stderr]     |
[INFO] [stderr] 145 | fn parse_clause(reader: &mut BufRead, builder: &mut ProblemBuilder<usize>) -> Result<()> {
[INFO] [stderr]     |                              ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/parser/dimacs.rs:163:27
[INFO] [stderr]     |
[INFO] [stderr] 163 | pub fn parse(reader: &mut BufRead) -> Result<Problem<usize>> {
[INFO] [stderr]     |                           ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser/npn.rs:12:25
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn skip_ws(reader: &mut BufRead) -> Result<()> {
[INFO] [stderr]    |                         ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser/npn.rs:32:31
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn skip_past_eol(reader: &mut BufRead) -> Result<()> {
[INFO] [stderr]    |                               ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser/npn.rs:50:31
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn skip_comments(reader: &mut BufRead) -> Result<()> {
[INFO] [stderr]    |                               ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser/npn.rs:68:29
[INFO] [stderr]    |
[INFO] [stderr] 68 | fn parse_usize(reader: &mut BufRead) -> Result<usize> {
[INFO] [stderr]    |                             ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/parser/npn.rs:107:30
[INFO] [stderr]     |
[INFO] [stderr] 107 | fn parse_header(reader: &mut BufRead) -> Result<(usize, usize)> {
[INFO] [stderr]     |                              ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/parser/npn.rs:131:32
[INFO] [stderr]     |
[INFO] [stderr] 131 | fn parse_variable(reader: &mut BufRead) -> Result<(usize, bool)> {
[INFO] [stderr]     |                                ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/parser/npn.rs:145:30
[INFO] [stderr]     |
[INFO] [stderr] 145 | fn parse_clause(reader: &mut BufRead, builder: &mut ProblemBuilder<usize>) -> Result<()> {
[INFO] [stderr]     |                              ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/parser/npn.rs:163:27
[INFO] [stderr]     |
[INFO] [stderr] 163 | pub fn parse(reader: &mut BufRead) -> Result<Problem<usize>> {
[INFO] [stderr]     |                           ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/parser/sudoku.rs:7:27
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn parse(reader: &mut Read, rows: usize, cols: usize) -> Result<Board> {
[INFO] [stderr]   |                           ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/sudoku/board.rs:256:42
[INFO] [stderr]     |
[INFO] [stderr] 256 |     pub fn print_dimacs(&self, writer: &mut io::Write) -> io::Result<()> {
[INFO] [stderr]     |                                             ^^^^^^^^^ help: use `dyn`: `dyn io::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/util/indexed_vec.rs:136:19
[INFO] [stderr]     |
[INFO] [stderr] 136 |         (&self.data as &fmt::Debug).fmt(f)
[INFO] [stderr]     |                         ^^^^^^^^^^ help: use `dyn`: `dyn fmt::Debug`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/driver/errors.rs:4:1
[INFO] [stderr]    |
[INFO] [stderr] 4  | / error_chain! {
[INFO] [stderr] 5  | |     links {
[INFO] [stderr] 6  | |         Io(::io::errors::Error, ::io::errors::ErrorKind);
[INFO] [stderr] 7  | |     }
[INFO] [stderr] ...  |
[INFO] [stderr] 17 | |     }
[INFO] [stderr] 18 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/driver/errors.rs:4:1
[INFO] [stderr]    |
[INFO] [stderr] 4  | / error_chain! {
[INFO] [stderr] 5  | |     links {
[INFO] [stderr] 6  | |         Io(::io::errors::Error, ::io::errors::ErrorKind);
[INFO] [stderr] 7  | |     }
[INFO] [stderr] ...  |
[INFO] [stderr] 17 | |     }
[INFO] [stderr] 18 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]  --> src/io/errors.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | / error_chain! {
[INFO] [stderr] 4 | |     foreign_links {
[INFO] [stderr] 5 | |         Io(io::Error);
[INFO] [stderr] 6 | |     }
[INFO] [stderr] 7 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/parser/errors.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  | / error_chain! {
[INFO] [stderr] 2  | |         foreign_links {
[INFO] [stderr] 3  | |             Io(::std::io::Error);
[INFO] [stderr] 4  | |         }
[INFO] [stderr] ...  |
[INFO] [stderr] 33 | |         }
[INFO] [stderr] 34 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/driver/errors.rs:4:1
[INFO] [stderr]    |
[INFO] [stderr] 4  | / error_chain! {
[INFO] [stderr] 5  | |     links {
[INFO] [stderr] 6  | |         Io(::io::errors::Error, ::io::errors::ErrorKind);
[INFO] [stderr] 7  | |     }
[INFO] [stderr] ...  |
[INFO] [stderr] 17 | |     }
[INFO] [stderr] 18 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]  --> src/io/errors.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | / error_chain! {
[INFO] [stderr] 4 | |     foreign_links {
[INFO] [stderr] 5 | |         Io(io::Error);
[INFO] [stderr] 6 | |     }
[INFO] [stderr] 7 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/parser/errors.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  | / error_chain! {
[INFO] [stderr] 2  | |         foreign_links {
[INFO] [stderr] 3  | |             Io(::std::io::Error);
[INFO] [stderr] 4  | |         }
[INFO] [stderr] ...  |
[INFO] [stderr] 33 | |         }
[INFO] [stderr] 34 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/cnf/problem/precompute.rs:6:19
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn precompute(mut variables: &mut IndexedVec<VariableId, Variable>, mut clauses: &mut Vec<Vec<Literal>>) -> SolverResult {
[INFO] [stderr]   |                   ----^^^^^^^^^
[INFO] [stderr]   |                   |
[INFO] [stderr]   |                   help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/cnf/problem/precompute.rs:6:73
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn precompute(mut variables: &mut IndexedVec<VariableId, Variable>, mut clauses: &mut Vec<Vec<Literal>>) -> SolverResult {
[INFO] [stderr]   |                                                                         ----^^^^^^^
[INFO] [stderr]   |                                                                         |
[INFO] [stderr]   |                                                                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 39 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/driver/errors.rs:4:1
[INFO] [stderr]    |
[INFO] [stderr] 4  | / error_chain! {
[INFO] [stderr] 5  | |     links {
[INFO] [stderr] 6  | |         Io(::io::errors::Error, ::io::errors::ErrorKind);
[INFO] [stderr] 7  | |     }
[INFO] [stderr] ...  |
[INFO] [stderr] 17 | |     }
[INFO] [stderr] 18 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]  --> src/io/errors.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | / error_chain! {
[INFO] [stderr] 4 | |     foreign_links {
[INFO] [stderr] 5 | |         Io(io::Error);
[INFO] [stderr] 6 | |     }
[INFO] [stderr] 7 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/parser/errors.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  | / error_chain! {
[INFO] [stderr] 2  | |         foreign_links {
[INFO] [stderr] 3  | |             Io(::std::io::Error);
[INFO] [stderr] 4  | |         }
[INFO] [stderr] ...  |
[INFO] [stderr] 33 | |         }
[INFO] [stderr] 34 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/cnf/problem/precompute.rs:6:19
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn precompute(mut variables: &mut IndexedVec<VariableId, Variable>, mut clauses: &mut Vec<Vec<Literal>>) -> SolverResult {
[INFO] [stderr]   |                   ----^^^^^^^^^
[INFO] [stderr]   |                   |
[INFO] [stderr]   |                   help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/cnf/problem/precompute.rs:6:73
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn precompute(mut variables: &mut IndexedVec<VariableId, Variable>, mut clauses: &mut Vec<Vec<Literal>>) -> SolverResult {
[INFO] [stderr]   |                                                                         ----^^^^^^^
[INFO] [stderr]   |                                                                         |
[INFO] [stderr]   |                                                                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 39 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3m 50s
[INFO] running `"docker" "inspect" "0e5f1d73a74d2c6770bde4bc500e316a1c16b583ff0164b5da62611fb0eae661"`
[INFO] running `"docker" "rm" "-f" "0e5f1d73a74d2c6770bde4bc500e316a1c16b583ff0164b5da62611fb0eae661"`
[INFO] [stdout] 0e5f1d73a74d2c6770bde4bc500e316a1c16b583ff0164b5da62611fb0eae661