[INFO] fetching crate redshift 1.0.3...
[INFO] testing redshift-1.0.3 against 1.55.0 for beta-1.56-1
[INFO] extracting crate redshift 1.0.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate redshift 1.0.3 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate redshift 1.0.3
[INFO] finished tweaking crates.io crate redshift 1.0.3
[INFO] tweaked toml for crates.io crate redshift 1.0.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 93eddea0768c8bfab20eb3b8bb73409f0aa3c00fb05a9480ba75bc57c801c123
[INFO] running `Command { std: "docker" "start" "-a" "93eddea0768c8bfab20eb3b8bb73409f0aa3c00fb05a9480ba75bc57c801c123", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93eddea0768c8bfab20eb3b8bb73409f0aa3c00fb05a9480ba75bc57c801c123", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93eddea0768c8bfab20eb3b8bb73409f0aa3c00fb05a9480ba75bc57c801c123", kill_on_drop: false }`
[INFO] [stdout] 93eddea0768c8bfab20eb3b8bb73409f0aa3c00fb05a9480ba75bc57c801c123
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3cf1f93bbf9521e8476abb627e5dc461d641332cd81e8a7d5c16f0b6c31588db
[INFO] running `Command { std: "docker" "start" "-a" "3cf1f93bbf9521e8476abb627e5dc461d641332cd81e8a7d5c16f0b6c31588db", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v0.5.3
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling csv v0.14.7
[INFO] [stderr]    Compiling redshift v1.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reader.rs:80:71
[INFO] [stdout]    |
[INFO] [stdout] 80 |     pub fn get_next_row(&mut self) -> Result<Option<RedshiftRow>, Box<Error>> {
[INFO] [stdout]    |                                                                       ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/reader.rs:83:19
[INFO] [stdout]    |
[INFO] [stdout] 83 |             match try!(self.get_next_item()) {
[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/reader.rs:102:63
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn get_next_item(&mut self) -> Result<NextItemResult, Box<Error>> {
[INFO] [stdout]     |                                                               ^^^^^ help: use `dyn`: `dyn Error`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/reader.rs:116:30
[INFO] [stdout]     |
[INFO] [stdout] 116 |             if let Some(c) = try!(self.get_next_char(true)) {
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/reader.rs:129:45
[INFO] [stdout]     |
[INFO] [stdout] 129 | ...                   let next_next = try!(self.get_next_char(false));
[INFO] [stdout]     |                                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/reader.rs:187:72
[INFO] [stdout]     |
[INFO] [stdout] 187 |     fn get_next_char(&mut self, eat: bool) -> Result<Option<char>, Box<Error>> {
[INFO] [stdout]     |                                                                        ^^^^^ help: use `dyn`: `dyn Error`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/reader.rs:189:27
[INFO] [stdout]     |
[INFO] [stdout] 189 |             self.length = try!(self.reader.read(&mut self.buffer));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/writer.rs:40:29
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub extract_column: Box<(Fn (&T) -> String)>,
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/writer.rs:40:30
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub extract_column: Box<(Fn (&T) -> String)>,
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn (&T) -> String`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/writer.rs:126:140
[INFO] [stdout]     |
[INFO] [stdout] 126 | ...nDefinition<T>>, items: Vec<T>) -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                                      ^^^^^ help: use `dyn`: `dyn Error`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/writer.rs:137:13
[INFO] [stdout]     |
[INFO] [stdout] 137 |             try!(writer.write(b"\n"));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/writer.rs:132:17
[INFO] [stdout]     |
[INFO] [stdout] 132 |                 try!(writer.write(escaped.as_bytes()));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/writer.rs:134:21
[INFO] [stdout]     |
[INFO] [stdout] 134 |                     try!(writer.write(b"|"));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/writer.rs:151:13
[INFO] [stdout]     |
[INFO] [stdout] 151 |             try!(writer.write(b"\n"));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/writer.rs:152:13
[INFO] [stdout]     |
[INFO] [stdout] 152 |             try!(writer.flush());
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/writer.rs:146:17
[INFO] [stdout]     |
[INFO] [stdout] 146 |                 try!(writer.write(escaped.as_bytes()));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/writer.rs:148:21
[INFO] [stdout]     |
[INFO] [stdout] 148 |                     try!(writer.write(b"|"));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/reader.rs:55:45
[INFO] [stdout]    |
[INFO] [stdout] 55 |             Err(e) => panic!(String::from(e.description())),
[INFO] [stdout]    |                                             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/reader.rs:55:30
[INFO] [stdout]    |
[INFO] [stdout] 55 |             Err(e) => panic!(String::from(e.description())),
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[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] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 55 |             Err(e) => panic!("{}", String::from(e.description())),
[INFO] [stdout]    |                              ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 55 |             Err(e) => std::panic::panic_any(String::from(e.description())),
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/reader.rs:131:33
[INFO] [stdout]     |
[INFO] [stdout] 131 | ...                   self.get_next_char(true);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.42s
[INFO] running `Command { std: "docker" "inspect" "3cf1f93bbf9521e8476abb627e5dc461d641332cd81e8a7d5c16f0b6c31588db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cf1f93bbf9521e8476abb627e5dc461d641332cd81e8a7d5c16f0b6c31588db", kill_on_drop: false }`
[INFO] [stdout] 3cf1f93bbf9521e8476abb627e5dc461d641332cd81e8a7d5c16f0b6c31588db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8e03c5302c2ed92fb12c657026662fdaab67d8c5049ef79e8436cd5103561680
[INFO] running `Command { std: "docker" "start" "-a" "8e03c5302c2ed92fb12c657026662fdaab67d8c5049ef79e8436cd5103561680", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reader.rs:80:71
[INFO] [stdout]    |
[INFO] [stdout] 80 |     pub fn get_next_row(&mut self) -> Result<Option<RedshiftRow>, Box<Error>> {
[INFO] [stdout]    |                                                                       ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/reader.rs:83:19
[INFO] [stdout]    |
[INFO] [stdout] 83 |             match try!(self.get_next_item()) {
[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/reader.rs:102:63
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn get_next_item(&mut self) -> Result<NextItemResult, Box<Error>> {
[INFO] [stdout]     |                                                               ^^^^^ help: use `dyn`: `dyn Error`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/reader.rs:116:30
[INFO] [stdout]     |
[INFO] [stdout] 116 |             if let Some(c) = try!(self.get_next_char(true)) {
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/reader.rs:129:45
[INFO] [stdout]     |
[INFO] [stdout] 129 | ...                   let next_next = try!(self.get_next_char(false));
[INFO] [stdout]     |                                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/reader.rs:187:72
[INFO] [stdout]     |
[INFO] [stdout] 187 |     fn get_next_char(&mut self, eat: bool) -> Result<Option<char>, Box<Error>> {
[INFO] [stdout]     |                                                                        ^^^^^ help: use `dyn`: `dyn Error`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/reader.rs:189:27
[INFO] [stdout]     |
[INFO] [stdout] 189 |             self.length = try!(self.reader.read(&mut self.buffer));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/writer.rs:40:29
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub extract_column: Box<(Fn (&T) -> String)>,
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/writer.rs:40:30
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub extract_column: Box<(Fn (&T) -> String)>,
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn (&T) -> String`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/writer.rs:126:140
[INFO] [stdout]     |
[INFO] [stdout] 126 | ...nDefinition<T>>, items: Vec<T>) -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                                      ^^^^^ help: use `dyn`: `dyn Error`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/writer.rs:137:13
[INFO] [stdout]     |
[INFO] [stdout] 137 |             try!(writer.write(b"\n"));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/writer.rs:132:17
[INFO] [stdout]     |
[INFO] [stdout] 132 |                 try!(writer.write(escaped.as_bytes()));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/writer.rs:134:21
[INFO] [stdout]     |
[INFO] [stdout] 134 |                     try!(writer.write(b"|"));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/writer.rs:151:13
[INFO] [stdout]     |
[INFO] [stdout] 151 |             try!(writer.write(b"\n"));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/writer.rs:152:13
[INFO] [stdout]     |
[INFO] [stdout] 152 |             try!(writer.flush());
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/writer.rs:146:17
[INFO] [stdout]     |
[INFO] [stdout] 146 |                 try!(writer.write(escaped.as_bytes()));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/writer.rs:148:21
[INFO] [stdout]     |
[INFO] [stdout] 148 |                     try!(writer.write(b"|"));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/reader.rs:55:45
[INFO] [stdout]    |
[INFO] [stdout] 55 |             Err(e) => panic!(String::from(e.description())),
[INFO] [stdout]    |                                             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/reader.rs:55:30
[INFO] [stdout]    |
[INFO] [stdout] 55 |             Err(e) => panic!(String::from(e.description())),
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[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] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 55 |             Err(e) => panic!("{}", String::from(e.description())),
[INFO] [stdout]    |                              ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 55 |             Err(e) => std::panic::panic_any(String::from(e.description())),
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling redshift v1.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/reader.rs:131:33
[INFO] [stdout]     |
[INFO] [stdout] 131 | ...                   self.get_next_char(true);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reader.rs:80:71
[INFO] [stdout]    |
[INFO] [stdout] 80 |     pub fn get_next_row(&mut self) -> Result<Option<RedshiftRow>, Box<Error>> {
[INFO] [stdout]    |                                                                       ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/reader.rs:83:19
[INFO] [stdout]    |
[INFO] [stdout] 83 |             match try!(self.get_next_item()) {
[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/reader.rs:102:63
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn get_next_item(&mut self) -> Result<NextItemResult, Box<Error>> {
[INFO] [stdout]     |                                                               ^^^^^ help: use `dyn`: `dyn Error`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/reader.rs:116:30
[INFO] [stdout]     |
[INFO] [stdout] 116 |             if let Some(c) = try!(self.get_next_char(true)) {
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/reader.rs:129:45
[INFO] [stdout]     |
[INFO] [stdout] 129 | ...                   let next_next = try!(self.get_next_char(false));
[INFO] [stdout]     |                                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/reader.rs:187:72
[INFO] [stdout]     |
[INFO] [stdout] 187 |     fn get_next_char(&mut self, eat: bool) -> Result<Option<char>, Box<Error>> {
[INFO] [stdout]     |                                                                        ^^^^^ help: use `dyn`: `dyn Error`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/reader.rs:189:27
[INFO] [stdout]     |
[INFO] [stdout] 189 |             self.length = try!(self.reader.read(&mut self.buffer));
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/writer.rs:40:29
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub extract_column: Box<(Fn (&T) -> String)>,
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/writer.rs:40:30
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub extract_column: Box<(Fn (&T) -> String)>,
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn (&T) -> String`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/writer.rs:126:140
[INFO] [stdout]     |
[INFO] [stdout] 126 | ...nDefinition<T>>, items: Vec<T>) -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                                      ^^^^^ help: use `dyn`: `dyn Error`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/writer.rs:137:13
[INFO] [stdout]     |
[INFO] [stdout] 137 |             try!(writer.write(b"\n"));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/writer.rs:132:17
[INFO] [stdout]     |
[INFO] [stdout] 132 |                 try!(writer.write(escaped.as_bytes()));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/writer.rs:134:21
[INFO] [stdout]     |
[INFO] [stdout] 134 |                     try!(writer.write(b"|"));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/writer.rs:151:13
[INFO] [stdout]     |
[INFO] [stdout] 151 |             try!(writer.write(b"\n"));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/writer.rs:152:13
[INFO] [stdout]     |
[INFO] [stdout] 152 |             try!(writer.flush());
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/writer.rs:146:17
[INFO] [stdout]     |
[INFO] [stdout] 146 |                 try!(writer.write(escaped.as_bytes()));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/writer.rs:148:21
[INFO] [stdout]     |
[INFO] [stdout] 148 |                     try!(writer.write(b"|"));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/reader.rs:55:45
[INFO] [stdout]    |
[INFO] [stdout] 55 |             Err(e) => panic!(String::from(e.description())),
[INFO] [stdout]    |                                             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/writer_tests.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |         let mut writer = redshift::writer::Writer::new();
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `A` should have a snake case name
[INFO] [stdout]  --> tests/writer_tests.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |         pub A: &'a str,
[INFO] [stdout]   |             ^ help: convert the identifier to snake case: `a`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `B` should have a snake case name
[INFO] [stdout]   --> tests/writer_tests.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |         pub B: &'a str,
[INFO] [stdout]    |             ^ help: convert the identifier to snake case: `b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `C` should have a snake case name
[INFO] [stdout]   --> tests/writer_tests.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |         pub C: &'a str,
[INFO] [stdout]    |             ^ help: convert the identifier to snake case (notice the capitalization): `c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/reader.rs:55:30
[INFO] [stdout]    |
[INFO] [stdout] 55 |             Err(e) => panic!(String::from(e.description())),
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[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] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 55 |             Err(e) => panic!("{}", String::from(e.description())),
[INFO] [stdout]    |                              ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 55 |             Err(e) => std::panic::panic_any(String::from(e.description())),
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/reader.rs:131:33
[INFO] [stdout]     |
[INFO] [stdout] 131 | ...                   self.get_next_char(true);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `Command { std: "docker" "inspect" "8e03c5302c2ed92fb12c657026662fdaab67d8c5049ef79e8436cd5103561680", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e03c5302c2ed92fb12c657026662fdaab67d8c5049ef79e8436cd5103561680", kill_on_drop: false }`
[INFO] [stdout] 8e03c5302c2ed92fb12c657026662fdaab67d8c5049ef79e8436cd5103561680
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8f6fcc4b7b79c2273daceeca8af18edaa624837d6037bbe96679c4776f332816
[INFO] running `Command { std: "docker" "start" "-a" "8f6fcc4b7b79c2273daceeca8af18edaa624837d6037bbe96679c4776f332816", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/reader.rs:80:71
[INFO] [stderr]    |
[INFO] [stderr] 80 |     pub fn get_next_row(&mut self) -> Result<Option<RedshiftRow>, Box<Error>> {
[INFO] [stderr]    |                                                                       ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/reader.rs:83:19
[INFO] [stderr]    |
[INFO] [stderr] 83 |             match try!(self.get_next_item()) {
[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/reader.rs:102:63
[INFO] [stderr]     |
[INFO] [stderr] 102 |     fn get_next_item(&mut self) -> Result<NextItemResult, Box<Error>> {
[INFO] [stderr]     |                                                               ^^^^^ help: use `dyn`: `dyn Error`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/reader.rs:116:30
[INFO] [stderr]     |
[INFO] [stderr] 116 |             if let Some(c) = try!(self.get_next_char(true)) {
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/reader.rs:129:45
[INFO] [stderr]     |
[INFO] [stderr] 129 | ...                   let next_next = try!(self.get_next_char(false));
[INFO] [stderr]     |                                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/reader.rs:187:72
[INFO] [stderr]     |
[INFO] [stderr] 187 |     fn get_next_char(&mut self, eat: bool) -> Result<Option<char>, Box<Error>> {
[INFO] [stderr]     |                                                                        ^^^^^ help: use `dyn`: `dyn Error`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/reader.rs:189:27
[INFO] [stderr]     |
[INFO] [stderr] 189 |             self.length = try!(self.reader.read(&mut self.buffer));
[INFO] [stderr]     |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/writer.rs:40:29
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub extract_column: Box<(Fn (&T) -> String)>,
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/writer.rs:40:30
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub extract_column: Box<(Fn (&T) -> String)>,
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn (&T) -> String`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/writer.rs:126:140
[INFO] [stderr]     |
[INFO] [stderr] 126 | ...nDefinition<T>>, items: Vec<T>) -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                                      ^^^^^ help: use `dyn`: `dyn Error`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/writer.rs:137:13
[INFO] [stderr]     |
[INFO] [stderr] 137 |             try!(writer.write(b"\n"));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/writer.rs:132:17
[INFO] [stderr]     |
[INFO] [stderr] 132 |                 try!(writer.write(escaped.as_bytes()));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/writer.rs:134:21
[INFO] [stderr]     |
[INFO] [stderr] 134 |                     try!(writer.write(b"|"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/writer.rs:151:13
[INFO] [stderr]     |
[INFO] [stderr] 151 |             try!(writer.write(b"\n"));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/writer.rs:152:13
[INFO] [stderr]     |
[INFO] [stderr] 152 |             try!(writer.flush());
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/writer.rs:146:17
[INFO] [stderr]     |
[INFO] [stderr] 146 |                 try!(writer.write(escaped.as_bytes()));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/writer.rs:148:21
[INFO] [stderr]     |
[INFO] [stderr] 148 |                     try!(writer.write(b"|"));
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/reader.rs:55:45
[INFO] [stderr]    |
[INFO] [stderr] 55 |             Err(e) => panic!(String::from(e.description())),
[INFO] [stderr]    |                                             ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]   --> src/reader.rs:55:30
[INFO] [stderr]    |
[INFO] [stderr] 55 |             Err(e) => panic!(String::from(e.description())),
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_fmt_panics)]` on by default
[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] help: add a "{}" format string to Display the message
[INFO] [stderr]    |
[INFO] [stderr] 55 |             Err(e) => panic!("{}", String::from(e.description())),
[INFO] [stderr]    |                              ^^^^^
[INFO] [stderr] help: or use std::panic::panic_any instead
[INFO] [stderr]    |
[INFO] [stderr] 55 |             Err(e) => std::panic::panic_any(String::from(e.description())),
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/reader.rs:131:33
[INFO] [stderr]     |
[INFO] [stderr] 131 | ...                   self.get_next_char(true);
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `redshift` (lib) generated 20 warnings
[INFO] [stderr] warning: `redshift` (lib test) generated 20 warnings (20 duplicates)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/writer_tests.rs:41:13
[INFO] [stderr]    |
[INFO] [stderr] 41 |         let mut writer = redshift::writer::Writer::new();
[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: structure field `A` should have a snake case name
[INFO] [stderr]  --> tests/writer_tests.rs:9:13
[INFO] [stderr]   |
[INFO] [stderr] 9 |         pub A: &'a str,
[INFO] [stderr]   |             ^ help: convert the identifier to snake case: `a`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `B` should have a snake case name
[INFO] [stderr]   --> tests/writer_tests.rs:10:13
[INFO] [stderr]    |
[INFO] [stderr] 10 |         pub B: &'a str,
[INFO] [stderr]    |             ^ help: convert the identifier to snake case: `b`
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `C` should have a snake case name
[INFO] [stderr]   --> tests/writer_tests.rs:11:13
[INFO] [stderr]    |
[INFO] [stderr] 11 |         pub C: &'a str,
[INFO] [stderr]    |             ^ help: convert the identifier to snake case (notice the capitalization): `c`
[INFO] [stderr] 
[INFO] [stderr] warning: `redshift` (test "writer_tests") generated 4 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/redshift-c8a3a180b1ca7cb8)
[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] [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]      Running unittests (/opt/rustwide/target/debug/deps/redshift2csv-f47717c4ab6496f4)
[INFO] [stderr]      Running tests/reader_tests.rs (/opt/rustwide/target/debug/deps/reader_tests-4447beaf368d6721)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test test::basic_escape_sequences_test ... ok
[INFO] [stderr]      Running tests/writer_tests.rs (/opt/rustwide/target/debug/deps/writer_tests-66d82ed19a15e0dc)
[INFO] [stdout] test test::basic_reader_test_with_no_trailing_newline ... ok
[INFO] [stdout] test test::basic_reader_test ... ok
[INFO] [stdout] test test::can_parse_empty_values ... ok
[INFO] [stdout] test test::can_parse_empty_values_with_double_quotes ... ok
[INFO] [stdout] test test::can_parse_empty_values_with_no_trailing_newline ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test::basic_writer_test ... ok
[INFO] [stdout] test test::basic_writer_with_header ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests redshift
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> /opt/rustwide/workdir/src/writer.rs:40:29
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub extract_column: Box<(Fn (&T) -> String)>,
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/writer.rs - writer::Writer::new (line 96) ... ok
[INFO] [stdout] test src/writer.rs - writer::Writer::with_header (line 113) ... ok
[INFO] [stdout] test src/writer.rs - writer::ColumnDefinition (line 7) ... ok
[INFO] [stdout] test src/reader.rs - reader::Reader<R>::new (line 65) ... ok
[INFO] [stdout] test src/writer.rs - writer::Writer (line 46) ... ok
[INFO] [stdout] test src/reader.rs - reader::Reader (line 22) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.63s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8f6fcc4b7b79c2273daceeca8af18edaa624837d6037bbe96679c4776f332816", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f6fcc4b7b79c2273daceeca8af18edaa624837d6037bbe96679c4776f332816", kill_on_drop: false }`
[INFO] [stdout] 8f6fcc4b7b79c2273daceeca8af18edaa624837d6037bbe96679c4776f332816