[INFO] fetching crate little 0.3.0...
[INFO] testing little-0.3.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate little 0.3.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate little 0.3.0
[INFO] finished tweaking crates.io crate little 0.3.0
[INFO] tweaked toml for crates.io crate little 0.3.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate little 0.3.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 15 packages to latest compatible versions
[INFO] [stderr]       Adding byteorder v0.4.2 (available: v1.5.0)
[INFO] [stderr]       Adding env_logger v0.3.5 (available: v0.11.8)
[INFO] [stderr]       Adding log v0.3.9 (available: v0.4.28)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded byteorder v0.4.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d6acc500f2a1e4402cb9272313eb17a522a701b2a136435ddfb4ccf5c083a2e
[INFO] running `Command { std: "docker" "start" "-a" "6d6acc500f2a1e4402cb9272313eb17a522a701b2a136435ddfb4ccf5c083a2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d6acc500f2a1e4402cb9272313eb17a522a701b2a136435ddfb4ccf5c083a2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d6acc500f2a1e4402cb9272313eb17a522a701b2a136435ddfb4ccf5c083a2e", kill_on_drop: false }`
[INFO] [stdout] 6d6acc500f2a1e4402cb9272313eb17a522a701b2a136435ddfb4ccf5c083a2e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6759f9c8dabefe9f6d86a00f9c3fbbbc4f4a37c048e7840593550570bf69fb87
[INFO] running `Command { std: "docker" "start" "-a" "6759f9c8dabefe9f6d86a00f9c3fbbbc4f4a37c048e7840593550570bf69fb87", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling byteorder v0.4.2
[INFO] [stderr]    Compiling little v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/interpreter.rs:134:25
[INFO] [stdout]     |
[INFO] [stdout] 134 |                         try!(write!(self.buf, "{}", try!(self.values.get_mem_value(location))))
[INFO] [stdout]     |                         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/interpreter.rs:134:53
[INFO] [stdout]     |
[INFO] [stdout] 134 |                         try!(write!(self.buf, "{}", try!(self.values.get_mem_value(location))))
[INFO] [stdout]     |                                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/interpreter.rs:146:37
[INFO] [stdout]     |
[INFO] [stdout] 146 |                         let value = try!(self.values.get_mem_value(location)).into_owned();
[INFO] [stdout]     |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/interpreter.rs:150:37
[INFO] [stdout]     |
[INFO] [stdout] 150 |                         let value = try!(self.values.get_mem_value(location)).into_owned();
[INFO] [stdout]     |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/interpreter.rs:158:37
[INFO] [stdout]     |
[INFO] [stdout] 158 |                         let value = try!(self.values.get_mem_value(location));
[INFO] [stdout]     |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BuildError`
[INFO] [stdout]  --> src/compiler.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     BuildError,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/stream.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!(writer.write_all(&buf[..len]));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/stream.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 59 |     try!(input.seek(SeekFrom::Start(loc)));
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/bytecode.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |         try!(output.write_u32::<LittleEndian>(self.magic));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/bytecode.rs:78:20
[INFO] [stdout]    |
[INFO] [stdout] 78 |             magic: try!(input.read_u32::<LittleEndian>())
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/lib.rs:108:26
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn invoke<'r>(&self, &'r [V]) -> LittleResult<V>;
[INFO] [stdout]     |                          ^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &'r [V]`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]     = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/lib.rs:158:26
[INFO] [stdout]     |
[INFO] [stdout] 158 |     fn execute(&'a self, V) -> Self::Stream;
[INFO] [stdout]     |                          ^ help: try naming the parameter or explicitly ignoring it: `_: V`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[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/error/seek.rs:27:51
[INFO] [stdout]    |
[INFO] [stdout] 27 |             SeekError::Io(ref e) => error::Error::description(e),
[INFO] [stdout]    |                                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error/little.rs:20:19
[INFO] [stdout]    |
[INFO] [stdout] 20 |     CallError(Box<error::Error + Sync + Send>),
[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/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 a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 20 |     CallError(Box<dyn error::Error + Sync + Send>),
[INFO] [stdout]    |                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/interpreter.rs:75:30
[INFO] [stdout]    |
[INFO] [stdout] 75 |     calls: Options<Call, &'a Function<V>>,
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 75 |     calls: Options<Call, &'a dyn Function<V>>,
[INFO] [stdout]    |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error/little.rs:74:42
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub type LittleResult<V> = Result<V, Box<error::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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub type LittleResult<V> = Result<V, Box<dyn error::Error>>;
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:145:42
[INFO] [stdout]     |
[INFO] [stdout] 145 |         calls: &'a HashMap<&'a str, &'a (Function<V> + 'a)>
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 145 |         calls: &'a HashMap<&'a str, &'a (dyn Function<V> + 'a)>
[INFO] [stdout]     |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:149:75
[INFO] [stdout]     |
[INFO] [stdout] 149 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stdout]     |                                                                           ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 149 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (dyn Function<V> + 'a)>)
[INFO] [stdout]     |                                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/interpreter.rs:50:42
[INFO] [stdout]    |
[INFO] [stdout] 50 |         calls: &'a HashMap<&'a str, &'a (Function<V> + 'a)>
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 50 |         calls: &'a HashMap<&'a str, &'a (dyn Function<V> + 'a)>
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/interpreter.rs:64:75
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (dyn Function<V> + 'a)>)
[INFO] [stdout]    |                                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/compiler.rs:30:42
[INFO] [stdout]    |
[INFO] [stdout] 30 |         calls: &'a HashMap<&'a str, &'a (Function<V> + 'a)>
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 30 |         calls: &'a HashMap<&'a str, &'a (dyn Function<V> + 'a)>
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/compiler.rs:36:75
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (dyn Function<V> + 'a)>)
[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/error/little.rs:64:48
[INFO] [stdout]    |
[INFO] [stdout] 64 |             LittleError::CallError(ref e) => 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/error/little.rs:65:49
[INFO] [stdout]    |
[INFO] [stdout] 65 |             LittleError::BuildError(ref e) => e.description(),
[INFO] [stdout]    |                                                 ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]   --> src/lib.rs:14:22
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::io::{ self, Write };
[INFO] [stdout]    |                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/interpreter.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{ Read, Write };
[INFO] [stdout]   |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]   --> src/interpreter.rs:64:27
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stdout]    |                           ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]   --> src/interpreter.rs:64:37
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stdout]    |                                     ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `calls`
[INFO] [stdout]   --> src/interpreter.rs:64:55
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stdout]    |                                                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_calls`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/interpreter.rs:136:45
[INFO] [stdout]     |
[INFO] [stdout] 136 |                     Instruction::Property { mut name } => {
[INFO] [stdout]     |                                             ^^^^^^^^ help: try ignoring the field: `name: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/interpreter.rs:136:45
[INFO] [stdout]     |
[INFO] [stdout] 136 |                     Instruction::Property { mut name } => {
[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: unused variable: `name`
[INFO] [stdout]    --> src/interpreter.rs:267:30
[INFO] [stdout]     |
[INFO] [stdout] 267 |             Mem::Parameter { name } => {
[INFO] [stdout]     |                              ^^^^ help: try ignoring the field: `name: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]   --> src/compiler.rs:36:27
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stdout]    |                           ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]   --> src/compiler.rs:36:37
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stdout]    |                                     ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `calls`
[INFO] [stdout]   --> src/compiler.rs:36:55
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stdout]    |                                                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_calls`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/compiler.rs:68:24
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
[INFO] [stdout]    |                        ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]   --> src/compiler.rs:80:29
[INFO] [stdout]    |
[INFO] [stdout] 80 |         pub fn output<I, O>(input: &mut I, output: &mut O)
[INFO] [stdout]    |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output`
[INFO] [stdout]   --> src/compiler.rs:80:44
[INFO] [stdout]    |
[INFO] [stdout] 80 |         pub fn output<I, O>(input: &mut I, output: &mut O)
[INFO] [stdout]    |                                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `template_ooo` is never constructed
[INFO] [stdout]   --> src/compiler.rs:77:16
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub struct template_ooo;
[INFO] [stdout]    |                ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `output` is never used
[INFO] [stdout]   --> src/compiler.rs:80:16
[INFO] [stdout]    |
[INFO] [stdout] 79 |     impl template_ooo {
[INFO] [stdout]    |     ----------------- associated function in this implementation
[INFO] [stdout] 80 |         pub fn output<I, O>(input: &mut I, output: &mut O)
[INFO] [stdout]    |                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/interpreter.rs:47:10
[INFO] [stdout]    |
[INFO] [stdout] 47 |         &'a mut self,
[INFO] [stdout]    |          ^^ the lifetime is named here
[INFO] [stdout] ...
[INFO] [stdout] 50 |         calls: &'a HashMap<&'a str, &'a (Function<V> + 'a)>
[INFO] [stdout]    |                 ^^          ^^       ^^ the lifetime is named here
[INFO] [stdout]    |                 |           |
[INFO] [stdout]    |                 |           the lifetime is named here
[INFO] [stdout]    |                 the lifetime is named here
[INFO] [stdout] 51 |     ) -> LittleResult<Executable<V>> {
[INFO] [stdout]    |                       ------------- the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 51 |     ) -> LittleResult<Executable<'a, V>> {
[INFO] [stdout]    |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/interpreter.rs:264:22
[INFO] [stdout]     |
[INFO] [stdout] 264 |     fn get_mem_value(&self, mem: &Mem) -> Result<Cow<V>, LittleError> {
[INFO] [stdout]     |                      ^^^^^                       ------ the same lifetime is hidden here
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 264 |     fn get_mem_value(&self, mem: &Mem) -> Result<Cow<'_, V>, LittleError> {
[INFO] [stdout]     |                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "6759f9c8dabefe9f6d86a00f9c3fbbbc4f4a37c048e7840593550570bf69fb87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6759f9c8dabefe9f6d86a00f9c3fbbbc4f4a37c048e7840593550570bf69fb87", kill_on_drop: false }`
[INFO] [stdout] 6759f9c8dabefe9f6d86a00f9c3fbbbc4f4a37c048e7840593550570bf69fb87
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 21ae2036fb90f34adfb9c3c42c71a3a744a5bf3f43f30cc6b7b13353a1dacd91
[INFO] running `Command { std: "docker" "start" "-a" "21ae2036fb90f34adfb9c3c42c71a3a744a5bf3f43f30cc6b7b13353a1dacd91", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling regex-syntax v0.3.9
[INFO] [stderr]    Compiling utf8-ranges v0.1.3
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/interpreter.rs:134:25
[INFO] [stdout]     |
[INFO] [stdout] 134 |                         try!(write!(self.buf, "{}", try!(self.values.get_mem_value(location))))
[INFO] [stdout]     |                         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/interpreter.rs:134:53
[INFO] [stdout]     |
[INFO] [stdout] 134 |                         try!(write!(self.buf, "{}", try!(self.values.get_mem_value(location))))
[INFO] [stdout]     |                                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/interpreter.rs:146:37
[INFO] [stdout]     |
[INFO] [stdout] 146 |                         let value = try!(self.values.get_mem_value(location)).into_owned();
[INFO] [stdout]     |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/interpreter.rs:150:37
[INFO] [stdout]     |
[INFO] [stdout] 150 |                         let value = try!(self.values.get_mem_value(location)).into_owned();
[INFO] [stdout]     |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/interpreter.rs:158:37
[INFO] [stdout]     |
[INFO] [stdout] 158 |                         let value = try!(self.values.get_mem_value(location));
[INFO] [stdout]     |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BuildError`
[INFO] [stdout]  --> src/compiler.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     BuildError,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/stream.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!(writer.write_all(&buf[..len]));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/stream.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 59 |     try!(input.seek(SeekFrom::Start(loc)));
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/bytecode.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |         try!(output.write_u32::<LittleEndian>(self.magic));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/bytecode.rs:78:20
[INFO] [stdout]    |
[INFO] [stdout] 78 |             magic: try!(input.read_u32::<LittleEndian>())
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/lib.rs:108:26
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn invoke<'r>(&self, &'r [V]) -> LittleResult<V>;
[INFO] [stdout]     |                          ^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &'r [V]`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]     = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/lib.rs:158:26
[INFO] [stdout]     |
[INFO] [stdout] 158 |     fn execute(&'a self, V) -> Self::Stream;
[INFO] [stdout]     |                          ^ help: try naming the parameter or explicitly ignoring it: `_: V`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[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/error/seek.rs:27:51
[INFO] [stdout]    |
[INFO] [stdout] 27 |             SeekError::Io(ref e) => error::Error::description(e),
[INFO] [stdout]    |                                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error/little.rs:20:19
[INFO] [stdout]    |
[INFO] [stdout] 20 |     CallError(Box<error::Error + Sync + Send>),
[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/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 a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 20 |     CallError(Box<dyn error::Error + Sync + Send>),
[INFO] [stdout]    |                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/interpreter.rs:75:30
[INFO] [stdout]    |
[INFO] [stdout] 75 |     calls: Options<Call, &'a Function<V>>,
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 75 |     calls: Options<Call, &'a dyn Function<V>>,
[INFO] [stdout]    |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error/little.rs:74:42
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub type LittleResult<V> = Result<V, Box<error::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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub type LittleResult<V> = Result<V, Box<dyn error::Error>>;
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:145:42
[INFO] [stdout]     |
[INFO] [stdout] 145 |         calls: &'a HashMap<&'a str, &'a (Function<V> + 'a)>
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 145 |         calls: &'a HashMap<&'a str, &'a (dyn Function<V> + 'a)>
[INFO] [stdout]     |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:149:75
[INFO] [stdout]     |
[INFO] [stdout] 149 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stdout]     |                                                                           ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 149 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (dyn Function<V> + 'a)>)
[INFO] [stdout]     |                                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/interpreter.rs:50:42
[INFO] [stdout]    |
[INFO] [stdout] 50 |         calls: &'a HashMap<&'a str, &'a (Function<V> + 'a)>
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 50 |         calls: &'a HashMap<&'a str, &'a (dyn Function<V> + 'a)>
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/interpreter.rs:64:75
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (dyn Function<V> + 'a)>)
[INFO] [stdout]    |                                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/compiler.rs:30:42
[INFO] [stdout]    |
[INFO] [stdout] 30 |         calls: &'a HashMap<&'a str, &'a (Function<V> + 'a)>
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 30 |         calls: &'a HashMap<&'a str, &'a (dyn Function<V> + 'a)>
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/compiler.rs:36:75
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (dyn Function<V> + 'a)>)
[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/error/little.rs:64:48
[INFO] [stdout]    |
[INFO] [stdout] 64 |             LittleError::CallError(ref e) => 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/error/little.rs:65:49
[INFO] [stdout]    |
[INFO] [stdout] 65 |             LittleError::BuildError(ref e) => e.description(),
[INFO] [stdout]    |                                                 ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]   --> src/lib.rs:14:22
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::io::{ self, Write };
[INFO] [stdout]    |                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/interpreter.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{ Read, Write };
[INFO] [stdout]   |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]   --> src/interpreter.rs:64:27
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stdout]    |                           ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]   --> src/interpreter.rs:64:37
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stdout]    |                                     ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `calls`
[INFO] [stdout]   --> src/interpreter.rs:64:55
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stdout]    |                                                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_calls`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/interpreter.rs:136:45
[INFO] [stdout]     |
[INFO] [stdout] 136 |                     Instruction::Property { mut name } => {
[INFO] [stdout]     |                                             ^^^^^^^^ help: try ignoring the field: `name: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/interpreter.rs:136:45
[INFO] [stdout]     |
[INFO] [stdout] 136 |                     Instruction::Property { mut name } => {
[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: unused variable: `name`
[INFO] [stdout]    --> src/interpreter.rs:267:30
[INFO] [stdout]     |
[INFO] [stdout] 267 |             Mem::Parameter { name } => {
[INFO] [stdout]     |                              ^^^^ help: try ignoring the field: `name: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]   --> src/compiler.rs:36:27
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stdout]    |                           ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]   --> src/compiler.rs:36:37
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stdout]    |                                     ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `calls`
[INFO] [stdout]   --> src/compiler.rs:36:55
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stdout]    |                                                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_calls`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/compiler.rs:68:24
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
[INFO] [stdout]    |                        ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]   --> src/compiler.rs:80:29
[INFO] [stdout]    |
[INFO] [stdout] 80 |         pub fn output<I, O>(input: &mut I, output: &mut O)
[INFO] [stdout]    |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output`
[INFO] [stdout]   --> src/compiler.rs:80:44
[INFO] [stdout]    |
[INFO] [stdout] 80 |         pub fn output<I, O>(input: &mut I, output: &mut O)
[INFO] [stdout]    |                                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `template_ooo` is never constructed
[INFO] [stdout]   --> src/compiler.rs:77:16
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub struct template_ooo;
[INFO] [stdout]    |                ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `output` is never used
[INFO] [stdout]   --> src/compiler.rs:80:16
[INFO] [stdout]    |
[INFO] [stdout] 79 |     impl template_ooo {
[INFO] [stdout]    |     ----------------- associated function in this implementation
[INFO] [stdout] 80 |         pub fn output<I, O>(input: &mut I, output: &mut O)
[INFO] [stdout]    |                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/interpreter.rs:47:10
[INFO] [stdout]    |
[INFO] [stdout] 47 |         &'a mut self,
[INFO] [stdout]    |          ^^ the lifetime is named here
[INFO] [stdout] ...
[INFO] [stdout] 50 |         calls: &'a HashMap<&'a str, &'a (Function<V> + 'a)>
[INFO] [stdout]    |                 ^^          ^^       ^^ the lifetime is named here
[INFO] [stdout]    |                 |           |
[INFO] [stdout]    |                 |           the lifetime is named here
[INFO] [stdout]    |                 the lifetime is named here
[INFO] [stdout] 51 |     ) -> LittleResult<Executable<V>> {
[INFO] [stdout]    |                       ------------- the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 51 |     ) -> LittleResult<Executable<'a, V>> {
[INFO] [stdout]    |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/interpreter.rs:264:22
[INFO] [stdout]     |
[INFO] [stdout] 264 |     fn get_mem_value(&self, mem: &Mem) -> Result<Cow<V>, LittleError> {
[INFO] [stdout]     |                      ^^^^^                       ------ the same lifetime is hidden here
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 264 |     fn get_mem_value(&self, mem: &Mem) -> Result<Cow<'_, V>, LittleError> {
[INFO] [stdout]     |                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling env_logger v0.3.5
[INFO] [stderr]    Compiling little v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> tests/compiler.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[macro_use] extern crate log;
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> tests/interpreter.rs:34:43
[INFO] [stdout]    |
[INFO] [stdout] 34 |     assert_eq!("constant is missing", res.description());
[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]   --> examples/hello_world.rs:61:45
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let mut funs = HashMap::<&'static str, &Function<Value>>::new();
[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/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 a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let mut funs = HashMap::<&'static str, &dyn Function<Value>>::new();
[INFO] [stdout]    |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> examples/hello_world.rs:4:22
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{ Read, Write };
[INFO] [stdout]   |                      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> tests/interpreter.rs:60:25
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 match 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]   --> tests/interpreter.rs:93:43
[INFO] [stdout]    |
[INFO] [stdout] 93 |     assert_eq!("constant is missing", res.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]    --> tests/interpreter.rs:116:39
[INFO] [stdout]     |
[INFO] [stdout] 116 |     assert_eq!("stack underflow", res.description());
[INFO] [stdout]     |                                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> tests/interpreter.rs:244:33
[INFO] [stdout]     |
[INFO] [stdout] 244 |     funs.insert("add", &add as &Function<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/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 a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 244 |     funs.insert("add", &add as &dyn Function<Value>);
[INFO] [stdout]     |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `output_param` is never used
[INFO] [stdout]   --> tests/compiler.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn output_param() {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/interpreter.rs:476:21
[INFO] [stdout]     |
[INFO] [stdout] 476 |         v => panic!(format!("test_cond_jump produced unexpected output {:?}", v)),
[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/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 476 -         v => panic!(format!("test_cond_jump produced unexpected output {:?}", v)),
[INFO] [stdout] 476 +         v => panic!("test_cond_jump produced unexpected output {:?}", v),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/interpreter.rs:134:25
[INFO] [stdout]     |
[INFO] [stdout] 134 |                         try!(write!(self.buf, "{}", try!(self.values.get_mem_value(location))))
[INFO] [stdout]     |                         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/interpreter.rs:134:53
[INFO] [stdout]     |
[INFO] [stdout] 134 |                         try!(write!(self.buf, "{}", try!(self.values.get_mem_value(location))))
[INFO] [stdout]     |                                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/interpreter.rs:146:37
[INFO] [stdout]     |
[INFO] [stdout] 146 |                         let value = try!(self.values.get_mem_value(location)).into_owned();
[INFO] [stdout]     |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/interpreter.rs:150:37
[INFO] [stdout]     |
[INFO] [stdout] 150 |                         let value = try!(self.values.get_mem_value(location)).into_owned();
[INFO] [stdout]     |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/interpreter.rs:158:37
[INFO] [stdout]     |
[INFO] [stdout] 158 |                         let value = try!(self.values.get_mem_value(location));
[INFO] [stdout]     |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BuildError`
[INFO] [stdout]  --> src/compiler.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     BuildError,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/stream.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |         try!(writer.write_all(&buf[..len]));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/stream.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 59 |     try!(input.seek(SeekFrom::Start(loc)));
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/bytecode.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |         try!(output.write_u32::<LittleEndian>(self.magic));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/bytecode.rs:78:20
[INFO] [stdout]    |
[INFO] [stdout] 78 |             magic: try!(input.read_u32::<LittleEndian>())
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/lib.rs:108:26
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn invoke<'r>(&self, &'r [V]) -> LittleResult<V>;
[INFO] [stdout]     |                          ^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &'r [V]`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]     = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/lib.rs:158:26
[INFO] [stdout]     |
[INFO] [stdout] 158 |     fn execute(&'a self, V) -> Self::Stream;
[INFO] [stdout]     |                          ^ help: try naming the parameter or explicitly ignoring it: `_: V`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[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/error/seek.rs:27:51
[INFO] [stdout]    |
[INFO] [stdout] 27 |             SeekError::Io(ref e) => error::Error::description(e),
[INFO] [stdout]    |                                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error/little.rs:20:19
[INFO] [stdout]    |
[INFO] [stdout] 20 |     CallError(Box<error::Error + Sync + Send>),
[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/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 a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 20 |     CallError(Box<dyn error::Error + Sync + Send>),
[INFO] [stdout]    |                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/interpreter.rs:75:30
[INFO] [stdout]    |
[INFO] [stdout] 75 |     calls: Options<Call, &'a Function<V>>,
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 75 |     calls: Options<Call, &'a dyn Function<V>>,
[INFO] [stdout]    |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error/little.rs:74:42
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub type LittleResult<V> = Result<V, Box<error::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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub type LittleResult<V> = Result<V, Box<dyn error::Error>>;
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:145:42
[INFO] [stdout]     |
[INFO] [stdout] 145 |         calls: &'a HashMap<&'a str, &'a (Function<V> + 'a)>
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 145 |         calls: &'a HashMap<&'a str, &'a (dyn Function<V> + 'a)>
[INFO] [stdout]     |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:149:75
[INFO] [stdout]     |
[INFO] [stdout] 149 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stdout]     |                                                                           ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 149 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (dyn Function<V> + 'a)>)
[INFO] [stdout]     |                                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/interpreter.rs:50:42
[INFO] [stdout]    |
[INFO] [stdout] 50 |         calls: &'a HashMap<&'a str, &'a (Function<V> + 'a)>
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 50 |         calls: &'a HashMap<&'a str, &'a (dyn Function<V> + 'a)>
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/interpreter.rs:64:75
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (dyn Function<V> + 'a)>)
[INFO] [stdout]    |                                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/compiler.rs:30:42
[INFO] [stdout]    |
[INFO] [stdout] 30 |         calls: &'a HashMap<&'a str, &'a (Function<V> + 'a)>
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 30 |         calls: &'a HashMap<&'a str, &'a (dyn Function<V> + 'a)>
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/compiler.rs:36:75
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (dyn Function<V> + 'a)>)
[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/error/little.rs:64:48
[INFO] [stdout]    |
[INFO] [stdout] 64 |             LittleError::CallError(ref e) => 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/error/little.rs:65:49
[INFO] [stdout]    |
[INFO] [stdout] 65 |             LittleError::BuildError(ref e) => e.description(),
[INFO] [stdout]    |                                                 ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]   --> src/lib.rs:14:22
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::io::{ self, Write };
[INFO] [stdout]    |                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/interpreter.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{ Read, Write };
[INFO] [stdout]   |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]   --> src/interpreter.rs:64:27
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stdout]    |                           ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]   --> src/interpreter.rs:64:37
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stdout]    |                                     ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `calls`
[INFO] [stdout]   --> src/interpreter.rs:64:55
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stdout]    |                                                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_calls`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/interpreter.rs:136:45
[INFO] [stdout]     |
[INFO] [stdout] 136 |                     Instruction::Property { mut name } => {
[INFO] [stdout]     |                                             ^^^^^^^^ help: try ignoring the field: `name: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/interpreter.rs:136:45
[INFO] [stdout]     |
[INFO] [stdout] 136 |                     Instruction::Property { mut name } => {
[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: unused variable: `name`
[INFO] [stdout]    --> src/interpreter.rs:267:30
[INFO] [stdout]     |
[INFO] [stdout] 267 |             Mem::Parameter { name } => {
[INFO] [stdout]     |                              ^^^^ help: try ignoring the field: `name: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]   --> src/compiler.rs:36:27
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stdout]    |                           ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]   --> src/compiler.rs:36:37
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stdout]    |                                     ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `calls`
[INFO] [stdout]   --> src/compiler.rs:36:55
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stdout]    |                                                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_calls`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/compiler.rs:68:24
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
[INFO] [stdout]    |                        ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]   --> src/compiler.rs:80:29
[INFO] [stdout]    |
[INFO] [stdout] 80 |         pub fn output<I, O>(input: &mut I, output: &mut O)
[INFO] [stdout]    |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output`
[INFO] [stdout]   --> src/compiler.rs:80:44
[INFO] [stdout]    |
[INFO] [stdout] 80 |         pub fn output<I, O>(input: &mut I, output: &mut O)
[INFO] [stdout]    |                                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `template_ooo` is never constructed
[INFO] [stdout]   --> src/compiler.rs:77:16
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub struct template_ooo;
[INFO] [stdout]    |                ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `output` is never used
[INFO] [stdout]   --> src/compiler.rs:80:16
[INFO] [stdout]    |
[INFO] [stdout] 79 |     impl template_ooo {
[INFO] [stdout]    |     ----------------- associated function in this implementation
[INFO] [stdout] 80 |         pub fn output<I, O>(input: &mut I, output: &mut O)
[INFO] [stdout]    |                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/interpreter.rs:47:10
[INFO] [stdout]    |
[INFO] [stdout] 47 |         &'a mut self,
[INFO] [stdout]    |          ^^ the lifetime is named here
[INFO] [stdout] ...
[INFO] [stdout] 50 |         calls: &'a HashMap<&'a str, &'a (Function<V> + 'a)>
[INFO] [stdout]    |                 ^^          ^^       ^^ the lifetime is named here
[INFO] [stdout]    |                 |           |
[INFO] [stdout]    |                 |           the lifetime is named here
[INFO] [stdout]    |                 the lifetime is named here
[INFO] [stdout] 51 |     ) -> LittleResult<Executable<V>> {
[INFO] [stdout]    |                       ------------- the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 51 |     ) -> LittleResult<Executable<'a, V>> {
[INFO] [stdout]    |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/interpreter.rs:264:22
[INFO] [stdout]     |
[INFO] [stdout] 264 |     fn get_mem_value(&self, mem: &Mem) -> Result<Cow<V>, LittleError> {
[INFO] [stdout]     |                      ^^^^^                       ------ the same lifetime is hidden here
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 264 |     fn get_mem_value(&self, mem: &Mem) -> Result<Cow<'_, V>, LittleError> {
[INFO] [stdout]     |                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 4.49s
[INFO] running `Command { std: "docker" "inspect" "21ae2036fb90f34adfb9c3c42c71a3a744a5bf3f43f30cc6b7b13353a1dacd91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21ae2036fb90f34adfb9c3c42c71a3a744a5bf3f43f30cc6b7b13353a1dacd91", kill_on_drop: false }`
[INFO] [stdout] 21ae2036fb90f34adfb9c3c42c71a3a744a5bf3f43f30cc6b7b13353a1dacd91
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2812d4b88b187c6e85254b4ed79fa8cc69c7f2cb932785883ec48dcff9274bbd
[INFO] running `Command { std: "docker" "start" "-a" "2812d4b88b187c6e85254b4ed79fa8cc69c7f2cb932785883ec48dcff9274bbd", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/interpreter.rs:134:25
[INFO] [stderr]     |
[INFO] [stderr] 134 |                         try!(write!(self.buf, "{}", try!(self.values.get_mem_value(location))))
[INFO] [stderr]     |                         ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/interpreter.rs:134:53
[INFO] [stderr]     |
[INFO] [stderr] 134 |                         try!(write!(self.buf, "{}", try!(self.values.get_mem_value(location))))
[INFO] [stderr]     |                                                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/interpreter.rs:146:37
[INFO] [stderr]     |
[INFO] [stderr] 146 |                         let value = try!(self.values.get_mem_value(location)).into_owned();
[INFO] [stderr]     |                                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/interpreter.rs:150:37
[INFO] [stderr]     |
[INFO] [stderr] 150 |                         let value = try!(self.values.get_mem_value(location)).into_owned();
[INFO] [stderr]     |                                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/interpreter.rs:158:37
[INFO] [stderr]     |
[INFO] [stderr] 158 |                         let value = try!(self.values.get_mem_value(location));
[INFO] [stderr]     |                                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BuildError`
[INFO] [stderr]  --> src/compiler.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     BuildError,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/stream.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         try!(writer.write_all(&buf[..len]));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/stream.rs:59:5
[INFO] [stderr]    |
[INFO] [stderr] 59 |     try!(input.seek(SeekFrom::Start(loc)));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/bytecode.rs:72:9
[INFO] [stderr]    |
[INFO] [stderr] 72 |         try!(output.write_u32::<LittleEndian>(self.magic));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/bytecode.rs:78:20
[INFO] [stderr]    |
[INFO] [stderr] 78 |             magic: try!(input.read_u32::<LittleEndian>())
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stderr]    --> src/lib.rs:108:26
[INFO] [stderr]     |
[INFO] [stderr] 108 |     fn invoke<'r>(&self, &'r [V]) -> LittleResult<V>;
[INFO] [stderr]     |                          ^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &'r [V]`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stderr]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stderr]     = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stderr]    --> src/lib.rs:158:26
[INFO] [stderr]     |
[INFO] [stderr] 158 |     fn execute(&'a self, V) -> Self::Stream;
[INFO] [stderr]     |                          ^ help: try naming the parameter or explicitly ignoring it: `_: V`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stderr]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/error/seek.rs:27:51
[INFO] [stderr]    |
[INFO] [stderr] 27 |             SeekError::Io(ref e) => error::Error::description(e),
[INFO] [stderr]    |                                                   ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error/little.rs:20:19
[INFO] [stderr]    |
[INFO] [stderr] 20 |     CallError(Box<error::Error + Sync + Send>),
[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/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 a dyn-compatible trait, use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 20 |     CallError(Box<dyn error::Error + Sync + Send>),
[INFO] [stderr]    |                   +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/interpreter.rs:75:30
[INFO] [stderr]    |
[INFO] [stderr] 75 |     calls: Options<Call, &'a Function<V>>,
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 75 |     calls: Options<Call, &'a dyn Function<V>>,
[INFO] [stderr]    |                              +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error/little.rs:74:42
[INFO] [stderr]    |
[INFO] [stderr] 74 | pub type LittleResult<V> = Result<V, Box<error::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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 74 | pub type LittleResult<V> = Result<V, Box<dyn error::Error>>;
[INFO] [stderr]    |                                          +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:145:42
[INFO] [stderr]     |
[INFO] [stderr] 145 |         calls: &'a HashMap<&'a str, &'a (Function<V> + 'a)>
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 145 |         calls: &'a HashMap<&'a str, &'a (dyn Function<V> + 'a)>
[INFO] [stderr]     |                                          +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:149:75
[INFO] [stderr]     |
[INFO] [stderr] 149 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 149 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (dyn Function<V> + 'a)>)
[INFO] [stderr]     |                                                                           +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/interpreter.rs:50:42
[INFO] [stderr]    |
[INFO] [stderr] 50 |         calls: &'a HashMap<&'a str, &'a (Function<V> + 'a)>
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 50 |         calls: &'a HashMap<&'a str, &'a (dyn Function<V> + 'a)>
[INFO] [stderr]    |                                          +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/interpreter.rs:64:75
[INFO] [stderr]    |
[INFO] [stderr] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (dyn Function<V> + 'a)>)
[INFO] [stderr]    |                                                                           +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/compiler.rs:30:42
[INFO] [stderr]    |
[INFO] [stderr] 30 |         calls: &'a HashMap<&'a str, &'a (Function<V> + 'a)>
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 30 |         calls: &'a HashMap<&'a str, &'a (dyn Function<V> + 'a)>
[INFO] [stderr]    |                                          +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/compiler.rs:36:75
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (dyn Function<V> + 'a)>)
[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/error/little.rs:64:48
[INFO] [stderr]    |
[INFO] [stderr] 64 |             LittleError::CallError(ref e) => 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/error/little.rs:65:49
[INFO] [stderr]    |
[INFO] [stderr] 65 |             LittleError::BuildError(ref e) => e.description(),
[INFO] [stderr]    |                                                 ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]   --> src/lib.rs:14:22
[INFO] [stderr]    |
[INFO] [stderr] 14 | use std::io::{ self, Write };
[INFO] [stderr]    |                      ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Read`
[INFO] [stderr]  --> src/interpreter.rs:4:16
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io::{ Read, Write };
[INFO] [stderr]   |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `id`
[INFO] [stderr]   --> src/interpreter.rs:64:27
[INFO] [stderr]    |
[INFO] [stderr] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stderr]    |                           ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `env`
[INFO] [stderr]   --> src/interpreter.rs:64:37
[INFO] [stderr]    |
[INFO] [stderr] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stderr]    |                                     ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `calls`
[INFO] [stderr]   --> src/interpreter.rs:64:55
[INFO] [stderr]    |
[INFO] [stderr] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stderr]    |                                                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_calls`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/interpreter.rs:136:45
[INFO] [stderr]     |
[INFO] [stderr] 136 |                     Instruction::Property { mut name } => {
[INFO] [stderr]     |                                             ^^^^^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/interpreter.rs:136:45
[INFO] [stderr]     |
[INFO] [stderr] 136 |                     Instruction::Property { mut name } => {
[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: unused variable: `name`
[INFO] [stderr]    --> src/interpreter.rs:267:30
[INFO] [stderr]     |
[INFO] [stderr] 267 |             Mem::Parameter { name } => {
[INFO] [stderr]     |                              ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `id`
[INFO] [stderr]   --> src/compiler.rs:36:27
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stderr]    |                           ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `env`
[INFO] [stderr]   --> src/compiler.rs:36:37
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stderr]    |                                     ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `calls`
[INFO] [stderr]   --> src/compiler.rs:36:55
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
[INFO] [stderr]    |                                                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_calls`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]   --> src/compiler.rs:68:24
[INFO] [stderr]    |
[INFO] [stderr] 68 |     fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
[INFO] [stderr]    |                        ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `input`
[INFO] [stderr]   --> src/compiler.rs:80:29
[INFO] [stderr]    |
[INFO] [stderr] 80 |         pub fn output<I, O>(input: &mut I, output: &mut O)
[INFO] [stderr]    |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `output`
[INFO] [stderr]   --> src/compiler.rs:80:44
[INFO] [stderr]    |
[INFO] [stderr] 80 |         pub fn output<I, O>(input: &mut I, output: &mut O)
[INFO] [stderr]    |                                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stderr] 
[INFO] [stderr] warning: struct `template_ooo` is never constructed
[INFO] [stderr]   --> src/compiler.rs:77:16
[INFO] [stderr]    |
[INFO] [stderr] 77 |     pub struct template_ooo;
[INFO] [stderr]    |                ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `output` is never used
[INFO] [stderr]   --> src/compiler.rs:80:16
[INFO] [stderr]    |
[INFO] [stderr] 79 |     impl template_ooo {
[INFO] [stderr]    |     ----------------- associated function in this implementation
[INFO] [stderr] 80 |         pub fn output<I, O>(input: &mut I, output: &mut O)
[INFO] [stderr]    |                ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stderr]   --> src/interpreter.rs:47:10
[INFO] [stderr]    |
[INFO] [stderr] 47 |         &'a mut self,
[INFO] [stderr]    |          ^^ the lifetime is named here
[INFO] [stderr] ...
[INFO] [stderr] 50 |         calls: &'a HashMap<&'a str, &'a (Function<V> + 'a)>
[INFO] [stderr]    |                 ^^          ^^       ^^ the lifetime is named here
[INFO] [stderr]    |                 |           |
[INFO] [stderr]    |                 |           the lifetime is named here
[INFO] [stderr]    |                 the lifetime is named here
[INFO] [stderr] 51 |     ) -> LittleResult<Executable<V>> {
[INFO] [stderr]    |                       ------------- the same lifetime is hidden here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: consistently use `'a`
[INFO] [stderr]    |
[INFO] [stderr] 51 |     ) -> LittleResult<Executable<'a, V>> {
[INFO] [stderr]    |                                  +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/interpreter.rs:264:22
[INFO] [stderr]     |
[INFO] [stderr] 264 |     fn get_mem_value(&self, mem: &Mem) -> Result<Cow<V>, LittleError> {
[INFO] [stderr]     |                      ^^^^^                       ------ the same lifetime is hidden here
[INFO] [stderr]     |                      |
[INFO] [stderr]     |                      the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 264 |     fn get_mem_value(&self, mem: &Mem) -> Result<Cow<'_, V>, LittleError> {
[INFO] [stderr]     |                                                      +++
[INFO] [stderr] 
[INFO] [stderr] warning: `little` (lib) generated 42 warnings (run `cargo fix --lib -p little` to apply 13 suggestions)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> tests/compiler.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #[macro_use] extern crate log;
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `output_param` is never used
[INFO] [stderr]   --> tests/compiler.rs:16:4
[INFO] [stderr]    |
[INFO] [stderr] 16 | fn output_param() {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr]    |
[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]   --> tests/interpreter.rs:34:43
[INFO] [stderr]    |
[INFO] [stderr] 34 |     assert_eq!("constant is missing", res.description());
[INFO] [stderr]    |                                           ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` 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]   --> tests/interpreter.rs:60:25
[INFO] [stderr]    |
[INFO] [stderr] 60 |                 match 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]   --> tests/interpreter.rs:93:43
[INFO] [stderr]    |
[INFO] [stderr] 93 |     assert_eq!("constant is missing", res.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]    --> tests/interpreter.rs:116:39
[INFO] [stderr]     |
[INFO] [stderr] 116 |     assert_eq!("stack underflow", res.description());
[INFO] [stderr]     |                                       ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> tests/interpreter.rs:244:33
[INFO] [stderr]     |
[INFO] [stderr] 244 |     funs.insert("add", &add as &Function<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/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 a dyn-compatible trait, use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 244 |     funs.insert("add", &add as &dyn Function<Value>);
[INFO] [stderr]     |                                 +++
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> tests/interpreter.rs:476:21
[INFO] [stderr]     |
[INFO] [stderr] 476 |         v => panic!(format!("test_cond_jump produced unexpected output {:?}", v)),
[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/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr]     = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stderr]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stderr] help: remove the `format!(..)` macro call
[INFO] [stderr]     |
[INFO] [stderr] 476 -         v => panic!(format!("test_cond_jump produced unexpected output {:?}", v)),
[INFO] [stderr] 476 +         v => panic!("test_cond_jump produced unexpected output {:?}", v),
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> examples/hello_world.rs:61:45
[INFO] [stderr]    |
[INFO] [stderr] 61 |     let mut funs = HashMap::<&'static str, &Function<Value>>::new();
[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/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 a dyn-compatible trait, use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 61 |     let mut funs = HashMap::<&'static str, &dyn Function<Value>>::new();
[INFO] [stderr]    |                                             +++
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> examples/hello_world.rs:4:22
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io::{ Read, Write };
[INFO] [stderr]   |                      ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `little` (lib test) generated 42 warnings (42 duplicates)
[INFO] [stderr] warning: `little` (test "compiler") generated 2 warnings
[INFO] [stderr] warning: `little` (test "interpreter") generated 6 warnings (run `cargo fix --test "interpreter"` to apply 2 suggestions)
[INFO] [stderr] warning: `little` (example "hello_world") generated 2 warnings (run `cargo fix --example "hello_world"` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/little-7438c5c22c702e6b)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test bytecode::test::header ... ok
[INFO] [stdout] test stream::test::test_stream ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/compiler.rs (/opt/rustwide/target/debug/deps/compiler-77fb501094666cdd)
[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 tests/interpreter.rs (/opt/rustwide/target/debug/deps/interpreter-a1e61ef8943131f9)
[INFO] [stdout] 
[INFO] [stdout] running 29 tests
[INFO] [stdout] test error_if_missing_constant ... ok
[INFO] [stdout] test exit ... ok
[INFO] [stdout] test load_binding_from_binding_stack1_stack2_output3 ... ok
[INFO] [stdout] test error_if_missing_const ... ok
[INFO] [stdout] test can_handle_interupt ... ok
[INFO] [stdout] test error_if_pop_empty_stack ... ok
[INFO] [stdout] test output_const ... ok
[INFO] [stdout] test output_params ... ok
[INFO] [stdout] test push_const_output_stack_top1 ... ok
[INFO] [stdout] test load_binding_from_param_output_binding ... ok
[INFO] [stdout] test output_different_constants ... ok
[INFO] [stdout] test load_binding_from_const_output_binding ... ok
[INFO] [stdout] test push_from_stack_to_stack ... ok
[INFO] [stdout] test push_constants_output_stack_top2 ... ok
[INFO] [stdout] test should_jump ... ok
[INFO] [stdout] test should_jump_if_eq ... ok
[INFO] [stdout] test should_jump_if_gte ... ok
[INFO] [stdout] test should_jump_if_lte ... ok
[INFO] [stdout] test should_jump_if_lt ... ok
[INFO] [stdout] test should_not_jump_if_not_eq ... ok
[INFO] [stdout] test should_not_jump_if_not_gte ... ok
[INFO] [stdout] test should_not_jump_if_not_gt ... ok
[INFO] [stdout] test should_not_jump_if_not_lt ... ok
[INFO] [stdout] test should_jump_if_ne ... ok
[INFO] [stdout] test should_jump_if_gt ... ok
[INFO] [stdout] test should_not_jump_if_not_lte ... ok
[INFO] [stdout] test should_not_jump_if_not_ne ... ok
[INFO] [stdout] test run_function ... ok
[INFO] [stderr]    Doc-tests little
[INFO] [stdout] test output_constant_twice ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 29 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.16s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/stream.rs - stream::seek_and_buf_copy (line 42) ... ok
[INFO] [stdout] test src/stream.rs - stream::buf_copy (line 9) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.47s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2812d4b88b187c6e85254b4ed79fa8cc69c7f2cb932785883ec48dcff9274bbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2812d4b88b187c6e85254b4ed79fa8cc69c7f2cb932785883ec48dcff9274bbd", kill_on_drop: false }`
[INFO] [stdout] 2812d4b88b187c6e85254b4ed79fa8cc69c7f2cb932785883ec48dcff9274bbd
