[INFO] cloning repository https://github.com/rodaine/rlox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rodaine/rlox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frodaine%2Frlox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frodaine%2Frlox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d54bce35da8c110b33fa3249900095756f56d6bc
[INFO] testing rodaine/rlox against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frodaine%2Frlox" "/workspace/builds/worker-21/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-21/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rodaine/rlox on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rodaine/rlox
[INFO] finished tweaking git repo https://github.com/rodaine/rlox
[INFO] tweaked toml for git repo https://github.com/rodaine/rlox written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] crate git repo https://github.com/rodaine/rlox already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a937aab647ca2029c3e7bdf3f5d0329741d1bb4567e8b49f31a46a16dcc08063
[INFO] running `Command { std: "docker" "start" "-a" "a937aab647ca2029c3e7bdf3f5d0329741d1bb4567e8b49f31a46a16dcc08063", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a937aab647ca2029c3e7bdf3f5d0329741d1bb4567e8b49f31a46a16dcc08063", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a937aab647ca2029c3e7bdf3f5d0329741d1bb4567e8b49f31a46a16dcc08063", kill_on_drop: false }`
[INFO] [stdout] a937aab647ca2029c3e7bdf3f5d0329741d1bb4567e8b49f31a46a16dcc08063
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d88edcea3052b78828e74ce267a24155db84c22aab163f1f7728307dcaafede3
[INFO] running `Command { std: "docker" "start" "-a" "d88edcea3052b78828e74ce267a24155db84c22aab163f1f7728307dcaafede3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/result.rs:70:32
[INFO] [stdout]    |
[INFO] [stdout] 70 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ast/expr.rs:76:37
[INFO] [stdout]    |
[INFO] [stdout] 76 |     pub fn accept<T>(&self, v: &mut Visitor<T>) -> T {
[INFO] [stdout]    |                                     ^^^^^^^^^^ help: use `dyn`: `dyn Visitor<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ast/stmt.rs:73:37
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn accept<T>(&self, v: &mut Visitor<T>) -> T {
[INFO] [stdout]    |                                     ^^^^^^^^^^ help: use `dyn`: `dyn Visitor<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/ast/token.rs:196:1
[INFO] [stdout]     |
[INFO] [stdout] 196 | / lazy_static! {
[INFO] [stdout] 197 | |     static ref RESERVED: HashMap<&'static str, Type> = [
[INFO] [stdout] 198 | |         ("and", Type::And),
[INFO] [stdout] 199 | |         ("class", Type::Class),
[INFO] [stdout] ...   |
[INFO] [stdout] 215 | |     ].iter().cloned().collect();
[INFO] [stdout] 216 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/functions.rs:200:1
[INFO] [stdout]     |
[INFO] [stdout] 200 | / lazy_static! {
[INFO] [stdout] 201 | |     pub static ref CLOCK_ID : Token = Token {
[INFO] [stdout] 202 | |         typ: TokenType::Identifier,
[INFO] [stdout] 203 | |         lexeme: "clock".to_owned(),
[INFO] [stdout] 204 | |         ..Token::default()
[INFO] [stdout] 205 | |     };
[INFO] [stdout] 206 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/class.rs:148:1
[INFO] [stdout]     |
[INFO] [stdout] 148 | / lazy_static! {
[INFO] [stdout] 149 | |     pub static ref THIS_ID : Token = Token {
[INFO] [stdout] 150 | |         typ: TokenType::This,
[INFO] [stdout] 151 | |         lexeme: "this".to_owned(),
[INFO] [stdout] ...   |
[INFO] [stdout] 159 | |     };
[INFO] [stdout] 160 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/class.rs:148:1
[INFO] [stdout]     |
[INFO] [stdout] 148 | / lazy_static! {
[INFO] [stdout] 149 | |     pub static ref THIS_ID : Token = Token {
[INFO] [stdout] 150 | |         typ: TokenType::This,
[INFO] [stdout] 151 | |         lexeme: "this".to_owned(),
[INFO] [stdout] ...   |
[INFO] [stdout] 159 | |     };
[INFO] [stdout] 160 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/result.rs:61:35
[INFO] [stdout]    |
[INFO] [stdout] 61 |             Error::IO(ref e) => e.description(),
[INFO] [stdout]    |                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/result.rs:72:35
[INFO] [stdout]    |
[INFO] [stdout] 72 |             Error::IO(ref e) => e.cause(),
[INFO] [stdout]    |                                   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.91s
[INFO] running `Command { std: "docker" "inspect" "d88edcea3052b78828e74ce267a24155db84c22aab163f1f7728307dcaafede3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d88edcea3052b78828e74ce267a24155db84c22aab163f1f7728307dcaafede3", kill_on_drop: false }`
[INFO] [stdout] d88edcea3052b78828e74ce267a24155db84c22aab163f1f7728307dcaafede3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 35644e7724792771ae432887c0bf8369b3bbc93f34117671c16c5047e9263a0d
[INFO] running `Command { std: "docker" "start" "-a" "35644e7724792771ae432887c0bf8369b3bbc93f34117671c16c5047e9263a0d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/result.rs:70:32
[INFO] [stdout]    |
[INFO] [stdout] 70 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ast/expr.rs:76:37
[INFO] [stdout]    |
[INFO] [stdout] 76 |     pub fn accept<T>(&self, v: &mut Visitor<T>) -> T {
[INFO] [stdout]    |                                     ^^^^^^^^^^ help: use `dyn`: `dyn Visitor<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ast/stmt.rs:73:37
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn accept<T>(&self, v: &mut Visitor<T>) -> T {
[INFO] [stdout]    |                                     ^^^^^^^^^^ help: use `dyn`: `dyn Visitor<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/ast/token.rs:196:1
[INFO] [stdout]     |
[INFO] [stdout] 196 | / lazy_static! {
[INFO] [stdout] 197 | |     static ref RESERVED: HashMap<&'static str, Type> = [
[INFO] [stdout] 198 | |         ("and", Type::And),
[INFO] [stdout] 199 | |         ("class", Type::Class),
[INFO] [stdout] ...   |
[INFO] [stdout] 215 | |     ].iter().cloned().collect();
[INFO] [stdout] 216 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/functions.rs:200:1
[INFO] [stdout]     |
[INFO] [stdout] 200 | / lazy_static! {
[INFO] [stdout] 201 | |     pub static ref CLOCK_ID : Token = Token {
[INFO] [stdout] 202 | |         typ: TokenType::Identifier,
[INFO] [stdout] 203 | |         lexeme: "clock".to_owned(),
[INFO] [stdout] 204 | |         ..Token::default()
[INFO] [stdout] 205 | |     };
[INFO] [stdout] 206 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/class.rs:148:1
[INFO] [stdout]     |
[INFO] [stdout] 148 | / lazy_static! {
[INFO] [stdout] 149 | |     pub static ref THIS_ID : Token = Token {
[INFO] [stdout] 150 | |         typ: TokenType::This,
[INFO] [stdout] 151 | |         lexeme: "this".to_owned(),
[INFO] [stdout] ...   |
[INFO] [stdout] 159 | |     };
[INFO] [stdout] 160 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/class.rs:148:1
[INFO] [stdout]     |
[INFO] [stdout] 148 | / lazy_static! {
[INFO] [stdout] 149 | |     pub static ref THIS_ID : Token = Token {
[INFO] [stdout] 150 | |         typ: TokenType::This,
[INFO] [stdout] 151 | |         lexeme: "this".to_owned(),
[INFO] [stdout] ...   |
[INFO] [stdout] 159 | |     };
[INFO] [stdout] 160 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/result.rs:61:35
[INFO] [stdout]    |
[INFO] [stdout] 61 |             Error::IO(ref e) => e.description(),
[INFO] [stdout]    |                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/result.rs:72:35
[INFO] [stdout]    |
[INFO] [stdout] 72 |             Error::IO(ref e) => e.cause(),
[INFO] [stdout]    |                                   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/result.rs:70:32
[INFO] [stdout]    |
[INFO] [stdout] 70 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ast/expr.rs:76:37
[INFO] [stdout]    |
[INFO] [stdout] 76 |     pub fn accept<T>(&self, v: &mut Visitor<T>) -> T {
[INFO] [stdout]    |                                     ^^^^^^^^^^ help: use `dyn`: `dyn Visitor<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ast/stmt.rs:73:37
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn accept<T>(&self, v: &mut Visitor<T>) -> T {
[INFO] [stdout]    |                                     ^^^^^^^^^^ help: use `dyn`: `dyn Visitor<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/ast/token.rs:196:1
[INFO] [stdout]     |
[INFO] [stdout] 196 | / lazy_static! {
[INFO] [stdout] 197 | |     static ref RESERVED: HashMap<&'static str, Type> = [
[INFO] [stdout] 198 | |         ("and", Type::And),
[INFO] [stdout] 199 | |         ("class", Type::Class),
[INFO] [stdout] ...   |
[INFO] [stdout] 215 | |     ].iter().cloned().collect();
[INFO] [stdout] 216 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/functions.rs:200:1
[INFO] [stdout]     |
[INFO] [stdout] 200 | / lazy_static! {
[INFO] [stdout] 201 | |     pub static ref CLOCK_ID : Token = Token {
[INFO] [stdout] 202 | |         typ: TokenType::Identifier,
[INFO] [stdout] 203 | |         lexeme: "clock".to_owned(),
[INFO] [stdout] 204 | |         ..Token::default()
[INFO] [stdout] 205 | |     };
[INFO] [stdout] 206 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/class.rs:148:1
[INFO] [stdout]     |
[INFO] [stdout] 148 | / lazy_static! {
[INFO] [stdout] 149 | |     pub static ref THIS_ID : Token = Token {
[INFO] [stdout] 150 | |         typ: TokenType::This,
[INFO] [stdout] 151 | |         lexeme: "this".to_owned(),
[INFO] [stdout] ...   |
[INFO] [stdout] 159 | |     };
[INFO] [stdout] 160 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/class.rs:148:1
[INFO] [stdout]     |
[INFO] [stdout] 148 | / lazy_static! {
[INFO] [stdout] 149 | |     pub static ref THIS_ID : Token = Token {
[INFO] [stdout] 150 | |         typ: TokenType::This,
[INFO] [stdout] 151 | |         lexeme: "this".to_owned(),
[INFO] [stdout] ...   |
[INFO] [stdout] 159 | |     };
[INFO] [stdout] 160 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/result.rs:61:35
[INFO] [stdout]    |
[INFO] [stdout] 61 |             Error::IO(ref e) => e.description(),
[INFO] [stdout]    |                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/result.rs:72:35
[INFO] [stdout]    |
[INFO] [stdout] 72 |             Error::IO(ref e) => e.cause(),
[INFO] [stdout]    |                                   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.76s
[INFO] running `Command { std: "docker" "inspect" "35644e7724792771ae432887c0bf8369b3bbc93f34117671c16c5047e9263a0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35644e7724792771ae432887c0bf8369b3bbc93f34117671c16c5047e9263a0d", kill_on_drop: false }`
[INFO] [stdout] 35644e7724792771ae432887c0bf8369b3bbc93f34117671c16c5047e9263a0d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b2754fd3fc637a12454841e3678c583bc7d6bac9be7fec4b1c1eef330d4554cb
[INFO] running `Command { std: "docker" "start" "-a" "b2754fd3fc637a12454841e3678c583bc7d6bac9be7fec4b1c1eef330d4554cb", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/result.rs:70:32
[INFO] [stderr]    |
[INFO] [stderr] 70 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ast/expr.rs:76:37
[INFO] [stderr]    |
[INFO] [stderr] 76 |     pub fn accept<T>(&self, v: &mut Visitor<T>) -> T {
[INFO] [stderr]    |                                     ^^^^^^^^^^ help: use `dyn`: `dyn Visitor<T>`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ast/stmt.rs:73:37
[INFO] [stderr]    |
[INFO] [stderr] 73 |     pub fn accept<T>(&self, v: &mut Visitor<T>) -> T {
[INFO] [stderr]    |                                     ^^^^^^^^^^ help: use `dyn`: `dyn Visitor<T>`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stderr]    --> src/ast/token.rs:196:1
[INFO] [stderr]     |
[INFO] [stderr] 196 | / lazy_static! {
[INFO] [stderr] 197 | |     static ref RESERVED: HashMap<&'static str, Type> = [
[INFO] [stderr] 198 | |         ("and", Type::And),
[INFO] [stderr] 199 | |         ("class", Type::Class),
[INFO] [stderr] ...   |
[INFO] [stderr] 215 | |     ].iter().cloned().collect();
[INFO] [stderr] 216 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]     = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stderr]    --> src/functions.rs:200:1
[INFO] [stderr]     |
[INFO] [stderr] 200 | / lazy_static! {
[INFO] [stderr] 201 | |     pub static ref CLOCK_ID : Token = Token {
[INFO] [stderr] 202 | |         typ: TokenType::Identifier,
[INFO] [stderr] 203 | |         lexeme: "clock".to_owned(),
[INFO] [stderr] 204 | |         ..Token::default()
[INFO] [stderr] 205 | |     };
[INFO] [stderr] 206 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stderr]    --> src/class.rs:148:1
[INFO] [stderr]     |
[INFO] [stderr] 148 | / lazy_static! {
[INFO] [stderr] 149 | |     pub static ref THIS_ID : Token = Token {
[INFO] [stderr] 150 | |         typ: TokenType::This,
[INFO] [stderr] 151 | |         lexeme: "this".to_owned(),
[INFO] [stderr] ...   |
[INFO] [stderr] 159 | |     };
[INFO] [stderr] 160 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/result.rs:61:35
[INFO] [stderr]    |
[INFO] [stderr] 61 |             Error::IO(ref e) => e.description(),
[INFO] [stderr]    |                                   ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/result.rs:72:35
[INFO] [stderr]    |
[INFO] [stderr] 72 |             Error::IO(ref e) => e.cause(),
[INFO] [stderr]    |                                   ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rlox` (lib) generated 9 warnings (1 duplicate)
[INFO] [stderr] warning: `rlox` (lib test) generated 9 warnings (9 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rlox-46eca18a935f9360)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rlox-5ec154b34dea4960)
[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/golden_master.rs (/opt/rustwide/target/debug/deps/golden_master-670844025890f558)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test scopes ... ok
[INFO] [stdout] test stmts ... ok
[INFO] [stdout] test brk ... ok
[INFO] [stdout] test counter ... ok
[INFO] [stdout] test lambda ... ok
[INFO] [stdout] test expr ... ok
[INFO] [stdout] test class ... ok
[INFO] [stdout] test loops ... ok
[INFO] [stdout] test function ... ok
[INFO] [stdout] test inheritance ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rlox
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/ast/token.rs - ast::token::Type::reserved (line 181) ... ok
[INFO] [stdout] test src/scanner.rs - scanner::Scanner (line 15) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.43s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b2754fd3fc637a12454841e3678c583bc7d6bac9be7fec4b1c1eef330d4554cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2754fd3fc637a12454841e3678c583bc7d6bac9be7fec4b1c1eef330d4554cb", kill_on_drop: false }`
[INFO] [stdout] b2754fd3fc637a12454841e3678c583bc7d6bac9be7fec4b1c1eef330d4554cb