[INFO] cloning repository https://github.com/aoikonomopoulos/contgrep
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aoikonomopoulos/contgrep" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faoikonomopoulos%2Fcontgrep", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faoikonomopoulos%2Fcontgrep'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6e366880993445392ff8e20a79c5d280d39d2c14
[INFO] testing aoikonomopoulos/contgrep against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faoikonomopoulos%2Fcontgrep" "/workspace/builds/worker-20/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-20/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aoikonomopoulos/contgrep on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/aoikonomopoulos/contgrep
[INFO] finished tweaking git repo https://github.com/aoikonomopoulos/contgrep
[INFO] tweaked toml for git repo https://github.com/aoikonomopoulos/contgrep written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] crate git repo https://github.com/aoikonomopoulos/contgrep already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded utf8-ranges v1.0.2
[INFO] [stderr]   Downloaded thread_local v0.3.6
[INFO] [stderr]   Downloaded lazy_static v1.3.0
[INFO] [stderr]   Downloaded ucd-util v0.1.3
[INFO] [stderr]   Downloaded atty v0.2.11
[INFO] [stderr]   Downloaded textwrap v0.10.0
[INFO] [stderr]   Downloaded regex-syntax v0.6.5
[INFO] [stderr]   Downloaded redox_termios v0.1.1
[INFO] [stderr]   Downloaded vec_map v0.8.1
[INFO] [stderr]   Downloaded ansi_term v0.11.0
[INFO] [stderr]   Downloaded aho-corasick v0.6.10
[INFO] [stderr]   Downloaded redox_syscall v0.1.51
[INFO] [stderr]   Downloaded termion v1.5.1
[INFO] [stderr]   Downloaded strsim v0.7.0
[INFO] [stderr]   Downloaded regex v1.1.2
[INFO] [stderr]   Downloaded unicode-width v0.1.5
[INFO] [stderr]   Downloaded clap v2.32.0
[INFO] [stderr]   Downloaded libc v0.2.50
[INFO] [stderr]   Downloaded memchr v2.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f5c5ce1bb602ef8577398f78e3b6ffd21d4b0747edc9f472d2628f3519b33f1
[INFO] running `Command { std: "docker" "start" "-a" "8f5c5ce1bb602ef8577398f78e3b6ffd21d4b0747edc9f472d2628f3519b33f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f5c5ce1bb602ef8577398f78e3b6ffd21d4b0747edc9f472d2628f3519b33f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f5c5ce1bb602ef8577398f78e3b6ffd21d4b0747edc9f472d2628f3519b33f1", kill_on_drop: false }`
[INFO] [stdout] 8f5c5ce1bb602ef8577398f78e3b6ffd21d4b0747edc9f472d2628f3519b33f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 71bb17921ea0d868f889dd744c512cf1d4497fc0cd1a75423271a30684688cd5
[INFO] running `Command { std: "docker" "start" "-a" "71bb17921ea0d868f889dd744c512cf1d4497fc0cd1a75423271a30684688cd5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling regex v1.1.2
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling textwrap v0.10.0
[INFO] [stderr]    Compiling regex-syntax v0.6.5
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling contgrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:38:34
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn format_append_line(acc : &mut io::Write, fctx : &FormatCtx, bytes : &[u8]) -> io::Result<()> {
[INFO] [stdout]    |                                  ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 38 - fn format_append_line(acc : &mut io::Write, fctx : &FormatCtx, bytes : &[u8]) -> io::Result<()> {
[INFO] [stdout] 38 + fn format_append_line(acc : &mut dyn io::Write, fctx : &FormatCtx, bytes : &[u8]) -> io::Result<()> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:54:42
[INFO] [stdout]    |
[INFO] [stdout] 54 | fn search_file(p : &Path, cont_sel: &Box<Fn(&[u8]) -> bool>, regex_set : &RegexSet,
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 54 - fn search_file(p : &Path, cont_sel: &Box<Fn(&[u8]) -> bool>, regex_set : &RegexSet,
[INFO] [stdout] 54 + fn search_file(p : &Path, cont_sel: &Box<dyn Fn(&[u8]) -> bool>, regex_set : &RegexSet,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:97:54
[INFO] [stdout]    |
[INFO] [stdout] 97 | fn search_files(filepaths : &[&Path], cont_sel : Box<Fn(&[u8]) -> bool>, regex_set : &RegexSet,
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 97 - fn search_files(filepaths : &[&Path], cont_sel : Box<Fn(&[u8]) -> bool>, regex_set : &RegexSet,
[INFO] [stdout] 97 + fn search_files(filepaths : &[&Path], cont_sel : Box<dyn Fn(&[u8]) -> bool>, regex_set : &RegexSet,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:106:49
[INFO] [stdout]     |
[INFO] [stdout] 106 | fn build_cont_sel(matches : &ArgMatches) -> Box<Fn(&[u8]) -> bool> {
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 106 - fn build_cont_sel(matches : &ArgMatches) -> Box<Fn(&[u8]) -> bool> {
[INFO] [stdout] 106 + fn build_cont_sel(matches : &ArgMatches) -> Box<dyn Fn(&[u8]) -> bool> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.09s
[INFO] running `Command { std: "docker" "inspect" "71bb17921ea0d868f889dd744c512cf1d4497fc0cd1a75423271a30684688cd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71bb17921ea0d868f889dd744c512cf1d4497fc0cd1a75423271a30684688cd5", kill_on_drop: false }`
[INFO] [stdout] 71bb17921ea0d868f889dd744c512cf1d4497fc0cd1a75423271a30684688cd5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d46346da82fc343a5730891e6a3d9e1f22702fc96b6c3781951536c31c99f3b8
[INFO] running `Command { std: "docker" "start" "-a" "d46346da82fc343a5730891e6a3d9e1f22702fc96b6c3781951536c31c99f3b8", kill_on_drop: false }`
[INFO] [stderr]    Compiling contgrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:38:34
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn format_append_line(acc : &mut io::Write, fctx : &FormatCtx, bytes : &[u8]) -> io::Result<()> {
[INFO] [stdout]    |                                  ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 38 - fn format_append_line(acc : &mut io::Write, fctx : &FormatCtx, bytes : &[u8]) -> io::Result<()> {
[INFO] [stdout] 38 + fn format_append_line(acc : &mut dyn io::Write, fctx : &FormatCtx, bytes : &[u8]) -> io::Result<()> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:54:42
[INFO] [stdout]    |
[INFO] [stdout] 54 | fn search_file(p : &Path, cont_sel: &Box<Fn(&[u8]) -> bool>, regex_set : &RegexSet,
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 54 - fn search_file(p : &Path, cont_sel: &Box<Fn(&[u8]) -> bool>, regex_set : &RegexSet,
[INFO] [stdout] 54 + fn search_file(p : &Path, cont_sel: &Box<dyn Fn(&[u8]) -> bool>, regex_set : &RegexSet,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:97:54
[INFO] [stdout]    |
[INFO] [stdout] 97 | fn search_files(filepaths : &[&Path], cont_sel : Box<Fn(&[u8]) -> bool>, regex_set : &RegexSet,
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 97 - fn search_files(filepaths : &[&Path], cont_sel : Box<Fn(&[u8]) -> bool>, regex_set : &RegexSet,
[INFO] [stdout] 97 + fn search_files(filepaths : &[&Path], cont_sel : Box<dyn Fn(&[u8]) -> bool>, regex_set : &RegexSet,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:106:49
[INFO] [stdout]     |
[INFO] [stdout] 106 | fn build_cont_sel(matches : &ArgMatches) -> Box<Fn(&[u8]) -> bool> {
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 106 - fn build_cont_sel(matches : &ArgMatches) -> Box<Fn(&[u8]) -> bool> {
[INFO] [stdout] 106 + fn build_cont_sel(matches : &ArgMatches) -> Box<dyn Fn(&[u8]) -> bool> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "d46346da82fc343a5730891e6a3d9e1f22702fc96b6c3781951536c31c99f3b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d46346da82fc343a5730891e6a3d9e1f22702fc96b6c3781951536c31c99f3b8", kill_on_drop: false }`
[INFO] [stdout] d46346da82fc343a5730891e6a3d9e1f22702fc96b6c3781951536c31c99f3b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 104a489a953bb2b36d9f385eba38947f5e2e0adcc980be998628180a1e69518b
[INFO] running `Command { std: "docker" "start" "-a" "104a489a953bb2b36d9f385eba38947f5e2e0adcc980be998628180a1e69518b", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:38:34
[INFO] [stderr]    |
[INFO] [stderr] 38 | fn format_append_line(acc : &mut io::Write, fctx : &FormatCtx, bytes : &[u8]) -> io::Result<()> {
[INFO] [stderr]    |                                  ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 38 - fn format_append_line(acc : &mut io::Write, fctx : &FormatCtx, bytes : &[u8]) -> io::Result<()> {
[INFO] [stderr] 38 + fn format_append_line(acc : &mut dyn io::Write, fctx : &FormatCtx, bytes : &[u8]) -> io::Result<()> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:54:42
[INFO] [stderr]    |
[INFO] [stderr] 54 | fn search_file(p : &Path, cont_sel: &Box<Fn(&[u8]) -> bool>, regex_set : &RegexSet,
[INFO] [stderr]    |                                          ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 54 - fn search_file(p : &Path, cont_sel: &Box<Fn(&[u8]) -> bool>, regex_set : &RegexSet,
[INFO] [stderr] 54 + fn search_file(p : &Path, cont_sel: &Box<dyn Fn(&[u8]) -> bool>, regex_set : &RegexSet,
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:97:54
[INFO] [stderr]    |
[INFO] [stderr] 97 | fn search_files(filepaths : &[&Path], cont_sel : Box<Fn(&[u8]) -> bool>, regex_set : &RegexSet,
[INFO] [stderr]    |                                                      ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 97 - fn search_files(filepaths : &[&Path], cont_sel : Box<Fn(&[u8]) -> bool>, regex_set : &RegexSet,
[INFO] [stderr] 97 + fn search_files(filepaths : &[&Path], cont_sel : Box<dyn Fn(&[u8]) -> bool>, regex_set : &RegexSet,
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:106:49
[INFO] [stderr]     |
[INFO] [stderr] 106 | fn build_cont_sel(matches : &ArgMatches) -> Box<Fn(&[u8]) -> bool> {
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 106 - fn build_cont_sel(matches : &ArgMatches) -> Box<Fn(&[u8]) -> bool> {
[INFO] [stderr] 106 + fn build_cont_sel(matches : &ArgMatches) -> Box<dyn Fn(&[u8]) -> bool> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: `contgrep` (bin "contgrep" test) generated 4 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/contgrep-d1c2aa91671bb984)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "104a489a953bb2b36d9f385eba38947f5e2e0adcc980be998628180a1e69518b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "104a489a953bb2b36d9f385eba38947f5e2e0adcc980be998628180a1e69518b", kill_on_drop: false }`
[INFO] [stdout] 104a489a953bb2b36d9f385eba38947f5e2e0adcc980be998628180a1e69518b