[INFO] fetching crate lapp 0.4.0...
[INFO] testing lapp-0.4.0 against master#8c0ec05f7dc9ef185eea9f36c5638e74e43935bf for pr-130285
[INFO] extracting crate lapp 0.4.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate lapp 0.4.0 on toolchain 8c0ec05f7dc9ef185eea9f36c5638e74e43935bf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c0ec05f7dc9ef185eea9f36c5638e74e43935bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lapp 0.4.0
[INFO] finished tweaking crates.io crate lapp 0.4.0
[INFO] tweaked toml for crates.io crate lapp 0.4.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c0ec05f7dc9ef185eea9f36c5638e74e43935bf" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c0ec05f7dc9ef185eea9f36c5638e74e43935bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:96c0aa5895ecf336b730ef27bcdde6e21027415df19888aad3cf1448e5d65d90" "/opt/rustwide/cargo-home/bin/cargo" "+8c0ec05f7dc9ef185eea9f36c5638e74e43935bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 50ee842503c6de49356df5c0ba3dac6f012f835fe7729edc7dad150258e05bf8
[INFO] running `Command { std: "docker" "start" "-a" "50ee842503c6de49356df5c0ba3dac6f012f835fe7729edc7dad150258e05bf8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50ee842503c6de49356df5c0ba3dac6f012f835fe7729edc7dad150258e05bf8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50ee842503c6de49356df5c0ba3dac6f012f835fe7729edc7dad150258e05bf8", kill_on_drop: false }`
[INFO] [stdout] 50ee842503c6de49356df5c0ba3dac6f012f835fe7729edc7dad150258e05bf8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:96c0aa5895ecf336b730ef27bcdde6e21027415df19888aad3cf1448e5d65d90" "/opt/rustwide/cargo-home/bin/cargo" "+8c0ec05f7dc9ef185eea9f36c5638e74e43935bf" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dbe951f8bb29d34fc116f39c032dd42d0acbadfb8dea5fc529c0aa5b8ff68a1d
[INFO] running `Command { std: "docker" "start" "-a" "dbe951f8bb29d34fc116f39c032dd42d0acbadfb8dea5fc529c0aa5b8ff68a1d", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]    Compiling lapp v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]   --> src/lib.rs:74:34
[INFO] [stdout]    |
[INFO] [stdout] 72 | impl <'a> Args<'a> {
[INFO] [stdout]    |       -- lifetime `'a` declared here
[INFO] [stdout] 73 |     /// provide a _usage string_ from which we extract flag definitions
[INFO] [stdout] 74 |     pub fn new(text: &'a str) -> Args {
[INFO] [stdout]    |                                  ^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/lib.rs:336:10
[INFO] [stdout]     |
[INFO] [stdout] 336 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::env::home_dir`: This function's behavior may be unexpected on Windows. Consider using a crate from crates.io instead.
[INFO] [stdout]    --> src/types.rs:276:22
[INFO] [stdout]     |
[INFO] [stdout] 276 |                 env::home_dir().unwrap().join(&val[2..])
[INFO] [stdout]     |                      ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/flag.rs:16:33
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub constraint: Option<Box< Fn(Value) -> Result<Value> >>,
[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: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub constraint: Option<Box< dyn Fn(Value) -> Result<Value> >>,
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:525:63
[INFO] [stdout]     |
[INFO] [stdout] 525 |     pub fn get_infile_result(&self, name: &str) -> Result<Box<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] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 525 |     pub fn get_infile_result(&self, name: &str) -> Result<Box<dyn Read>> {
[INFO] [stdout]     |                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:530:64
[INFO] [stdout]     |
[INFO] [stdout] 530 |     pub fn get_outfile_result(&self, name: &str) -> Result<Box<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: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 530 |     pub fn get_outfile_result(&self, name: &str) -> Result<Box<dyn Write>> {
[INFO] [stdout]     |                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:577:49
[INFO] [stdout]     |
[INFO] [stdout] 577 |     pub fn get_infile(&self, name: &str) -> Box<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] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 577 |     pub fn get_infile(&self, name: &str) -> Box<dyn Read> {
[INFO] [stdout]     |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:582:50
[INFO] [stdout]     |
[INFO] [stdout] 582 |     pub fn get_outfile(&self, name: &str) -> Box<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: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 582 |     pub fn get_outfile(&self, name: &str) -> Box<dyn Write> {
[INFO] [stdout]     |                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/types.rs:186:43
[INFO] [stdout]     |
[INFO] [stdout] 186 |     pub fn as_infile(&self) -> Result<Box<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] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 186 |     pub fn as_infile(&self) -> Result<Box<dyn Read>> {
[INFO] [stdout]     |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/types.rs:199:44
[INFO] [stdout]     |
[INFO] [stdout] 199 |     pub fn as_outfile(&self) -> Result<Box<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: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 199 |     pub fn as_outfile(&self) -> Result<Box<dyn Write>> {
[INFO] [stdout]     |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/types.rs:115:92
[INFO] [stdout]     |
[INFO] [stdout] 115 |                 Err(e) => Ok(Value::Error(format!("can't convert '{}' to integer - {}",s,e.description())))
[INFO] [stdout]     |                                                                                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/types.rs:120:90
[INFO] [stdout]     |
[INFO] [stdout] 120 |                 Err(e) => Ok(Value::Error(format!("can't convert '{}' to float - {}",s,e.description())))
[INFO] [stdout]     |                                                                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/types.rs:192:84
[INFO] [stdout]     |
[INFO] [stdout] 192 |                     Err(e) => error(format!("can't open '{}' for reading: {}",s, e.description()))
[INFO] [stdout]     |                                                                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/types.rs:205:84
[INFO] [stdout]     |
[INFO] [stdout] 205 |                     Err(e) => error(format!("can't open '{}' for writing: {}",s, e.description()))
[INFO] [stdout]     |                                                                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:111:25
[INFO] [stdout]     |
[INFO] [stdout] 111 |             self.quit(e.description());
[INFO] [stdout]     |                         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:160:25
[INFO] [stdout]     |
[INFO] [stdout] 160 |             self.quit(e.description());
[INFO] [stdout]     |                         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:168:60
[INFO] [stdout]     |
[INFO] [stdout] 168 |                 return error(format!("{}\nat line: '{}'",e.description(),line));
[INFO] [stdout]     |                                                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:449:35
[INFO] [stdout]     |
[INFO] [stdout] 449 |             Err(e) => self.quit(e.description())
[INFO] [stdout]     |                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:483:52
[INFO] [stdout]     |
[INFO] [stdout] 483 |                     Err(e) => self.bad_flag(name,e.description())
[INFO] [stdout]     |                                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:101:20
[INFO] [stdout]     |
[INFO] [stdout] 101 |             panic!(text);
[INFO] [stdout]     |                    ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 101 |             panic!("{}", text);
[INFO] [stdout]     |                    +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "dbe951f8bb29d34fc116f39c032dd42d0acbadfb8dea5fc529c0aa5b8ff68a1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbe951f8bb29d34fc116f39c032dd42d0acbadfb8dea5fc529c0aa5b8ff68a1d", kill_on_drop: false }`
[INFO] [stdout] dbe951f8bb29d34fc116f39c032dd42d0acbadfb8dea5fc529c0aa5b8ff68a1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:96c0aa5895ecf336b730ef27bcdde6e21027415df19888aad3cf1448e5d65d90" "/opt/rustwide/cargo-home/bin/cargo" "+8c0ec05f7dc9ef185eea9f36c5638e74e43935bf" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dfef72c9a3cf723fb9c7760fd9f033c1a21ac06bc1ee581c271e3154ed03e756
[INFO] running `Command { std: "docker" "start" "-a" "dfef72c9a3cf723fb9c7760fd9f033c1a21ac06bc1ee581c271e3154ed03e756", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]   --> src/lib.rs:74:34
[INFO] [stdout]    |
[INFO] [stdout] 72 | impl <'a> Args<'a> {
[INFO] [stdout]    |       -- lifetime `'a` declared here
[INFO] [stdout] 73 |     /// provide a _usage string_ from which we extract flag definitions
[INFO] [stdout] 74 |     pub fn new(text: &'a str) -> Args {
[INFO] [stdout]    |                                  ^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/lib.rs:336:10
[INFO] [stdout]     |
[INFO] [stdout] 336 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::env::home_dir`: This function's behavior may be unexpected on Windows. Consider using a crate from crates.io instead.
[INFO] [stdout]    --> src/types.rs:276:22
[INFO] [stdout]     |
[INFO] [stdout] 276 |                 env::home_dir().unwrap().join(&val[2..])
[INFO] [stdout]     |                      ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/flag.rs:16:33
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub constraint: Option<Box< Fn(Value) -> Result<Value> >>,
[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: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub constraint: Option<Box< dyn Fn(Value) -> Result<Value> >>,
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:525:63
[INFO] [stdout]     |
[INFO] [stdout] 525 |     pub fn get_infile_result(&self, name: &str) -> Result<Box<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] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 525 |     pub fn get_infile_result(&self, name: &str) -> Result<Box<dyn Read>> {
[INFO] [stdout]     |                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:530:64
[INFO] [stdout]     |
[INFO] [stdout] 530 |     pub fn get_outfile_result(&self, name: &str) -> Result<Box<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: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 530 |     pub fn get_outfile_result(&self, name: &str) -> Result<Box<dyn Write>> {
[INFO] [stdout]     |                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:577:49
[INFO] [stdout]     |
[INFO] [stdout] 577 |     pub fn get_infile(&self, name: &str) -> Box<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] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 577 |     pub fn get_infile(&self, name: &str) -> Box<dyn Read> {
[INFO] [stdout]     |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:582:50
[INFO] [stdout]     |
[INFO] [stdout] 582 |     pub fn get_outfile(&self, name: &str) -> Box<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: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 582 |     pub fn get_outfile(&self, name: &str) -> Box<dyn Write> {
[INFO] [stdout]     |                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/types.rs:186:43
[INFO] [stdout]     |
[INFO] [stdout] 186 |     pub fn as_infile(&self) -> Result<Box<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] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 186 |     pub fn as_infile(&self) -> Result<Box<dyn Read>> {
[INFO] [stdout]     |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/types.rs:199:44
[INFO] [stdout]     |
[INFO] [stdout] 199 |     pub fn as_outfile(&self) -> Result<Box<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: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 199 |     pub fn as_outfile(&self) -> Result<Box<dyn Write>> {
[INFO] [stdout]     |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/types.rs:115:92
[INFO] [stdout]     |
[INFO] [stdout] 115 |                 Err(e) => Ok(Value::Error(format!("can't convert '{}' to integer - {}",s,e.description())))
[INFO] [stdout]     |                                                                                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/types.rs:120:90
[INFO] [stdout]     |
[INFO] [stdout] 120 |                 Err(e) => Ok(Value::Error(format!("can't convert '{}' to float - {}",s,e.description())))
[INFO] [stdout]     |                                                                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/types.rs:192:84
[INFO] [stdout]     |
[INFO] [stdout] 192 |                     Err(e) => error(format!("can't open '{}' for reading: {}",s, e.description()))
[INFO] [stdout]     |                                                                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/types.rs:205:84
[INFO] [stdout]     |
[INFO] [stdout] 205 |                     Err(e) => error(format!("can't open '{}' for writing: {}",s, e.description()))
[INFO] [stdout]     |                                                                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:111:25
[INFO] [stdout]     |
[INFO] [stdout] 111 |             self.quit(e.description());
[INFO] [stdout]     |                         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:160:25
[INFO] [stdout]     |
[INFO] [stdout] 160 |             self.quit(e.description());
[INFO] [stdout]     |                         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:168:60
[INFO] [stdout]     |
[INFO] [stdout] 168 |                 return error(format!("{}\nat line: '{}'",e.description(),line));
[INFO] [stdout]     |                                                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:449:35
[INFO] [stdout]     |
[INFO] [stdout] 449 |             Err(e) => self.quit(e.description())
[INFO] [stdout]     |                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:483:52
[INFO] [stdout]     |
[INFO] [stdout] 483 |                     Err(e) => self.bad_flag(name,e.description())
[INFO] [stdout]     |                                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:101:20
[INFO] [stdout]     |
[INFO] [stdout] 101 |             panic!(text);
[INFO] [stdout]     |                    ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 101 |             panic!("{}", text);
[INFO] [stdout]     |                    +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling lapp v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> examples/basic.rs:6:27
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn run() -> Result<(),Box<Error>> {
[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: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn run() -> Result<(),Box<dyn Error>> {
[INFO] [stdout]   |                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `verbose`, `file`, and `help` are never read
[INFO] [stdout]   --> examples/test.lapp.inc:11:2
[INFO] [stdout]    |
[INFO] [stdout] 9  | struct Args {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 10 |     lines: i32,
[INFO] [stdout] 11 |     verbose: bool,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 12 |     file: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 13 |     help: bool,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Args` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]   --> src/lib.rs:74:34
[INFO] [stdout]    |
[INFO] [stdout] 72 | impl <'a> Args<'a> {
[INFO] [stdout]    |       -- lifetime `'a` declared here
[INFO] [stdout] 73 |     /// provide a _usage string_ from which we extract flag definitions
[INFO] [stdout] 74 |     pub fn new(text: &'a str) -> Args {
[INFO] [stdout]    |                                  ^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/lib.rs:336:10
[INFO] [stdout]     |
[INFO] [stdout] 336 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::env::home_dir`: This function's behavior may be unexpected on Windows. Consider using a crate from crates.io instead.
[INFO] [stdout]    --> src/types.rs:276:22
[INFO] [stdout]     |
[INFO] [stdout] 276 |                 env::home_dir().unwrap().join(&val[2..])
[INFO] [stdout]     |                      ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/flag.rs:16:33
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub constraint: Option<Box< Fn(Value) -> Result<Value> >>,
[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: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub constraint: Option<Box< dyn Fn(Value) -> Result<Value> >>,
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:525:63
[INFO] [stdout]     |
[INFO] [stdout] 525 |     pub fn get_infile_result(&self, name: &str) -> Result<Box<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] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 525 |     pub fn get_infile_result(&self, name: &str) -> Result<Box<dyn Read>> {
[INFO] [stdout]     |                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:530:64
[INFO] [stdout]     |
[INFO] [stdout] 530 |     pub fn get_outfile_result(&self, name: &str) -> Result<Box<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: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 530 |     pub fn get_outfile_result(&self, name: &str) -> Result<Box<dyn Write>> {
[INFO] [stdout]     |                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:577:49
[INFO] [stdout]     |
[INFO] [stdout] 577 |     pub fn get_infile(&self, name: &str) -> Box<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] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 577 |     pub fn get_infile(&self, name: &str) -> Box<dyn Read> {
[INFO] [stdout]     |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:582:50
[INFO] [stdout]     |
[INFO] [stdout] 582 |     pub fn get_outfile(&self, name: &str) -> Box<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: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 582 |     pub fn get_outfile(&self, name: &str) -> Box<dyn Write> {
[INFO] [stdout]     |                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/types.rs:186:43
[INFO] [stdout]     |
[INFO] [stdout] 186 |     pub fn as_infile(&self) -> Result<Box<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] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 186 |     pub fn as_infile(&self) -> Result<Box<dyn Read>> {
[INFO] [stdout]     |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/types.rs:199:44
[INFO] [stdout]     |
[INFO] [stdout] 199 |     pub fn as_outfile(&self) -> Result<Box<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: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 199 |     pub fn as_outfile(&self) -> Result<Box<dyn Write>> {
[INFO] [stdout]     |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/types.rs:115:92
[INFO] [stdout]     |
[INFO] [stdout] 115 |                 Err(e) => Ok(Value::Error(format!("can't convert '{}' to integer - {}",s,e.description())))
[INFO] [stdout]     |                                                                                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/types.rs:120:90
[INFO] [stdout]     |
[INFO] [stdout] 120 |                 Err(e) => Ok(Value::Error(format!("can't convert '{}' to float - {}",s,e.description())))
[INFO] [stdout]     |                                                                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/types.rs:192:84
[INFO] [stdout]     |
[INFO] [stdout] 192 |                     Err(e) => error(format!("can't open '{}' for reading: {}",s, e.description()))
[INFO] [stdout]     |                                                                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/types.rs:205:84
[INFO] [stdout]     |
[INFO] [stdout] 205 |                     Err(e) => error(format!("can't open '{}' for writing: {}",s, e.description()))
[INFO] [stdout]     |                                                                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:111:25
[INFO] [stdout]     |
[INFO] [stdout] 111 |             self.quit(e.description());
[INFO] [stdout]     |                         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:160:25
[INFO] [stdout]     |
[INFO] [stdout] 160 |             self.quit(e.description());
[INFO] [stdout]     |                         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:168:60
[INFO] [stdout]     |
[INFO] [stdout] 168 |                 return error(format!("{}\nat line: '{}'",e.description(),line));
[INFO] [stdout]     |                                                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:449:35
[INFO] [stdout]     |
[INFO] [stdout] 449 |             Err(e) => self.quit(e.description())
[INFO] [stdout]     |                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:483:52
[INFO] [stdout]     |
[INFO] [stdout] 483 |                     Err(e) => self.bad_flag(name,e.description())
[INFO] [stdout]     |                                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:799:26
[INFO] [stdout]     |
[INFO] [stdout] 799 |         r.err().unwrap().description().to_string()
[INFO] [stdout]     |                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:101:20
[INFO] [stdout]     |
[INFO] [stdout] 101 |             panic!(text);
[INFO] [stdout]     |                    ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 101 |             panic!("{}", text);
[INFO] [stdout]     |                    +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "dfef72c9a3cf723fb9c7760fd9f033c1a21ac06bc1ee581c271e3154ed03e756", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfef72c9a3cf723fb9c7760fd9f033c1a21ac06bc1ee581c271e3154ed03e756", kill_on_drop: false }`
[INFO] [stdout] dfef72c9a3cf723fb9c7760fd9f033c1a21ac06bc1ee581c271e3154ed03e756
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:96c0aa5895ecf336b730ef27bcdde6e21027415df19888aad3cf1448e5d65d90" "/opt/rustwide/cargo-home/bin/cargo" "+8c0ec05f7dc9ef185eea9f36c5638e74e43935bf" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 28e78fe983e21fea5bbb26ca4ad24d7807bfcec683b37b0f7b713b4a34b2921c
[INFO] running `Command { std: "docker" "start" "-a" "28e78fe983e21fea5bbb26ca4ad24d7807bfcec683b37b0f7b713b4a34b2921c", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr] warning: elided lifetime has a name
[INFO] [stderr]   --> src/lib.rs:74:34
[INFO] [stderr]    |
[INFO] [stderr] 72 | impl <'a> Args<'a> {
[INFO] [stderr]    |       -- lifetime `'a` declared here
[INFO] [stderr] 73 |     /// provide a _usage string_ from which we extract flag definitions
[INFO] [stderr] 74 |     pub fn new(text: &'a str) -> Args {
[INFO] [stderr]    |                                  ^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/lib.rs:336:10
[INFO] [stderr]     |
[INFO] [stderr] 336 |         };
[INFO] [stderr]     |          ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `std::env::home_dir`: This function's behavior may be unexpected on Windows. Consider using a crate from crates.io instead.
[INFO] [stderr]    --> src/types.rs:276:22
[INFO] [stderr]     |
[INFO] [stderr] 276 |                 env::home_dir().unwrap().join(&val[2..])
[INFO] [stderr]     |                      ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/flag.rs:16:33
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub constraint: Option<Box< Fn(Value) -> Result<Value> >>,
[INFO] [stderr]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) 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]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] help: if this is an object-safe trait, use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub constraint: Option<Box< dyn Fn(Value) -> Result<Value> >>,
[INFO] [stderr]    |                                 +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:525:63
[INFO] [stderr]     |
[INFO] [stderr] 525 |     pub fn get_infile_result(&self, name: &str) -> Result<Box<Read>> {
[INFO] [stderr]     |                                                               ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) 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: if this is an object-safe trait, use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 525 |     pub fn get_infile_result(&self, name: &str) -> Result<Box<dyn Read>> {
[INFO] [stderr]     |                                                               +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:530:64
[INFO] [stderr]     |
[INFO] [stderr] 530 |     pub fn get_outfile_result(&self, name: &str) -> Result<Box<Write>> {
[INFO] [stderr]     |                                                                ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) 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: if this is an object-safe trait, use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 530 |     pub fn get_outfile_result(&self, name: &str) -> Result<Box<dyn Write>> {
[INFO] [stderr]     |                                                                +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:577:49
[INFO] [stderr]     |
[INFO] [stderr] 577 |     pub fn get_infile(&self, name: &str) -> Box<Read> {
[INFO] [stderr]     |                                                 ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) 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: if this is an object-safe trait, use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 577 |     pub fn get_infile(&self, name: &str) -> Box<dyn Read> {
[INFO] [stderr]     |                                                 +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:582:50
[INFO] [stderr]     |
[INFO] [stderr] 582 |     pub fn get_outfile(&self, name: &str) -> Box<Write> {
[INFO] [stderr]     |                                                  ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) 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: if this is an object-safe trait, use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 582 |     pub fn get_outfile(&self, name: &str) -> Box<dyn Write> {
[INFO] [stderr]     |                                                  +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/types.rs:186:43
[INFO] [stderr]     |
[INFO] [stderr] 186 |     pub fn as_infile(&self) -> Result<Box<Read>> {
[INFO] [stderr]     |                                           ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) 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: if this is an object-safe trait, use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 186 |     pub fn as_infile(&self) -> Result<Box<dyn Read>> {
[INFO] [stderr]     |                                           +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/types.rs:199:44
[INFO] [stderr]     |
[INFO] [stderr] 199 |     pub fn as_outfile(&self) -> Result<Box<Write>> {
[INFO] [stderr]     |                                            ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) 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: if this is an object-safe trait, use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 199 |     pub fn as_outfile(&self) -> Result<Box<dyn Write>> {
[INFO] [stderr]     |                                            +++
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/types.rs:115:92
[INFO] [stderr]     |
[INFO] [stderr] 115 |                 Err(e) => Ok(Value::Error(format!("can't convert '{}' to integer - {}",s,e.description())))
[INFO] [stderr]     |                                                                                            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/types.rs:120:90
[INFO] [stderr]     |
[INFO] [stderr] 120 |                 Err(e) => Ok(Value::Error(format!("can't convert '{}' to float - {}",s,e.description())))
[INFO] [stderr]     |                                                                                          ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/types.rs:192:84
[INFO] [stderr]     |
[INFO] [stderr] 192 |                     Err(e) => error(format!("can't open '{}' for reading: {}",s, e.description()))
[INFO] [stderr]     |                                                                                    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/types.rs:205:84
[INFO] [stderr]     |
[INFO] [stderr] 205 |                     Err(e) => error(format!("can't open '{}' for writing: {}",s, e.description()))
[INFO] [stderr]     |                                                                                    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/lib.rs:111:25
[INFO] [stderr]     |
[INFO] [stderr] 111 |             self.quit(e.description());
[INFO] [stderr]     |                         ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/lib.rs:160:25
[INFO] [stderr]     |
[INFO] [stderr] 160 |             self.quit(e.description());
[INFO] [stderr]     |                         ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/lib.rs:168:60
[INFO] [stderr]     |
[INFO] [stderr] 168 |                 return error(format!("{}\nat line: '{}'",e.description(),line));
[INFO] [stderr]     |                                                            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/lib.rs:449:35
[INFO] [stderr]     |
[INFO] [stderr] 449 |             Err(e) => self.quit(e.description())
[INFO] [stderr]     |                                   ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/lib.rs:483:52
[INFO] [stderr]     |
[INFO] [stderr] 483 |                     Err(e) => self.bad_flag(name,e.description())
[INFO] [stderr]     |                                                    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/lib.rs:101:20
[INFO] [stderr]     |
[INFO] [stderr] 101 |             panic!(text);
[INFO] [stderr]     |                    ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stderr] help: add a "{}" format string to `Display` the message
[INFO] [stderr]     |
[INFO] [stderr] 101 |             panic!("{}", text);
[INFO] [stderr]     |                    +++++
[INFO] [stderr] 
[INFO] [stderr] warning: `lapp` (lib) generated 20 warnings (run `cargo fix --lib -p lapp` to apply 8 suggestions)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> examples/basic.rs:6:27
[INFO] [stderr]   |
[INFO] [stderr] 6 | fn run() -> Result<(),Box<Error>> {
[INFO] [stderr]   |                           ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2015) 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]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] help: if this is an object-safe trait, use `dyn`
[INFO] [stderr]   |
[INFO] [stderr] 6 | fn run() -> Result<(),Box<dyn Error>> {
[INFO] [stderr]   |                           +++
[INFO] [stderr] 
[INFO] [stderr] warning: `lapp` (example "basic") generated 1 warning (run `cargo fix --example "basic"` to apply 1 suggestion)
[INFO] [stderr] warning: fields `verbose`, `file`, and `help` are never read
[INFO] [stderr]   --> examples/test.lapp.inc:11:2
[INFO] [stderr]    |
[INFO] [stderr] 9  | struct Args {
[INFO] [stderr]    |        ---- fields in this struct
[INFO] [stderr] 10 |     lines: i32,
[INFO] [stderr] 11 |     verbose: bool,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 12 |     file: String,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 13 |     help: bool,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Args` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/lib.rs:799:26
[INFO] [stderr]     |
[INFO] [stderr] 799 |         r.err().unwrap().description().to_string()
[INFO] [stderr]     |                          ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `lapp` (example "lines") generated 1 warning
[INFO] [stderr] warning: `lapp` (lib test) generated 21 warnings (20 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/lapp-cc456541c403fb93)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test tests::test_custom ... ok
[INFO] [stdout] test tests::test_errors_result ... ok
[INFO] [stdout] test tests::test_simple_array_flag ... ok
[INFO] [stdout] test tests::test_simple_bool_flags ... ok
[INFO] [stdout] test tests::test_simple_just_out ... ok
[INFO] [stdout] test tests::test_simple_multiple_flags ... ok
[INFO] [stdout] test tests::test_simple_multiple_positional_args ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/lapp-gen.rs (/opt/rustwide/target/debug/deps/lapp_gen-337f35e984ee482a)
[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] [stderr]    Doc-tests lapp
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/lib.rs:336:10
[INFO] [stderr]     |
[INFO] [stderr] 336 |         };
[INFO] [stderr]     |          ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 5) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.10s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "28e78fe983e21fea5bbb26ca4ad24d7807bfcec683b37b0f7b713b4a34b2921c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28e78fe983e21fea5bbb26ca4ad24d7807bfcec683b37b0f7b713b4a34b2921c", kill_on_drop: false }`
[INFO] [stdout] 28e78fe983e21fea5bbb26ca4ad24d7807bfcec683b37b0f7b713b4a34b2921c