[INFO] cloning repository https://github.com/ficoos/roll
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ficoos/roll" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fficoos%2Froll", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fficoos%2Froll'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d7d320663191b72a99cc1aaa8b920c4bdf0869a8
[INFO] testing ficoos/roll against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fficoos%2Froll" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ficoos/roll on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ficoos/roll
[INFO] finished tweaking git repo https://github.com/ficoos/roll
[INFO] tweaked toml for git repo https://github.com/ficoos/roll written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/ficoos/roll already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 37da2f623df666722283716b8f97e18fe762d8ddc33acc5e01301e03e3287a00
[INFO] running `Command { std: "docker" "start" "-a" "37da2f623df666722283716b8f97e18fe762d8ddc33acc5e01301e03e3287a00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "37da2f623df666722283716b8f97e18fe762d8ddc33acc5e01301e03e3287a00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37da2f623df666722283716b8f97e18fe762d8ddc33acc5e01301e03e3287a00", kill_on_drop: false }`
[INFO] [stdout] 37da2f623df666722283716b8f97e18fe762d8ddc33acc5e01301e03e3287a00
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8cb62ef886cba5b1613e2c291413a897f14ed9e71298309cb49c15f68e7a1dd1
[INFO] running `Command { std: "docker" "start" "-a" "8cb62ef886cba5b1613e2c291413a897f14ed9e71298309cb49c15f68e7a1dd1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.20
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling roll v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/main.rs:92:14
[INFO] [stdout]    |
[INFO] [stdout] 92 |         Some(&'0'...'9') => true,
[INFO] [stdout]    |              ^^^^^^^^^^ help: use `..=` for an inclusive range: `&('0'..='9')`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` 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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/main.rs:106:14
[INFO] [stdout]     |
[INFO] [stdout] 106 |         Some(&'0'...'9') | Some(&'d') => {},
[INFO] [stdout]     |              ^^^^^^^^^^ help: use `..=` for an inclusive range: `&('0'..='9')`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/main.rs:9:23
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Add { lhs: Box<Expression>, rhs: Box<Expression> }
[INFO] [stdout]   |                       ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 9 - struct Add { lhs: Box<Expression>, rhs: Box<Expression> }
[INFO] [stdout] 9 + struct Add { lhs: Box<dyn Expression>, rhs: Box<Expression> }
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/main.rs:9:45
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Add { lhs: Box<Expression>, rhs: Box<Expression> }
[INFO] [stdout]   |                                             ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 9 - struct Add { lhs: Box<Expression>, rhs: Box<Expression> }
[INFO] [stdout] 9 + struct Add { lhs: Box<Expression>, rhs: Box<dyn Expression> }
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:10:28
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Subtract { lhs: Box<Expression>, rhs: Box<Expression> }
[INFO] [stdout]    |                            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 10 - struct Subtract { lhs: Box<Expression>, rhs: Box<Expression> }
[INFO] [stdout] 10 + struct Subtract { lhs: Box<dyn Expression>, rhs: Box<Expression> }
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:10:50
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Subtract { lhs: Box<Expression>, rhs: Box<Expression> }
[INFO] [stdout]    |                                                  ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 10 - struct Subtract { lhs: Box<Expression>, rhs: Box<Expression> }
[INFO] [stdout] 10 + struct Subtract { lhs: Box<Expression>, rhs: Box<dyn Expression> }
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:103:59
[INFO] [stdout]     |
[INFO] [stdout] 103 | fn read_operand<T>(chars: &mut Peekable<T>) -> Option<Box<Expression>>
[INFO] [stdout]     |                                                           ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 103 - fn read_operand<T>(chars: &mut Peekable<T>) -> Option<Box<Expression>>
[INFO] [stdout] 103 + fn read_operand<T>(chars: &mut Peekable<T>) -> Option<Box<dyn Expression>>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:137:43
[INFO] [stdout]     |
[INFO] [stdout] 137 | pub fn roll(roll_def: &str) -> Result<Box<Expression>, ParseError>
[INFO] [stdout]     |                                           ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 137 - pub fn roll(roll_def: &str) -> Result<Box<Expression>, ParseError>
[INFO] [stdout] 137 + pub fn roll(roll_def: &str) -> Result<Box<dyn Expression>, ParseError>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.14s
[INFO] running `Command { std: "docker" "inspect" "8cb62ef886cba5b1613e2c291413a897f14ed9e71298309cb49c15f68e7a1dd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cb62ef886cba5b1613e2c291413a897f14ed9e71298309cb49c15f68e7a1dd1", kill_on_drop: false }`
[INFO] [stdout] 8cb62ef886cba5b1613e2c291413a897f14ed9e71298309cb49c15f68e7a1dd1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 91df3094ac3c0b616d7998fdd74a6edda4a84e44f19d9b5c66825f0eb0a532df
[INFO] running `Command { std: "docker" "start" "-a" "91df3094ac3c0b616d7998fdd74a6edda4a84e44f19d9b5c66825f0eb0a532df", kill_on_drop: false }`
[INFO] [stderr]    Compiling roll v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/main.rs:92:14
[INFO] [stdout]    |
[INFO] [stdout] 92 |         Some(&'0'...'9') => true,
[INFO] [stdout]    |              ^^^^^^^^^^ help: use `..=` for an inclusive range: `&('0'..='9')`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` 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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/main.rs:106:14
[INFO] [stdout]     |
[INFO] [stdout] 106 |         Some(&'0'...'9') | Some(&'d') => {},
[INFO] [stdout]     |              ^^^^^^^^^^ help: use `..=` for an inclusive range: `&('0'..='9')`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/main.rs:9:23
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Add { lhs: Box<Expression>, rhs: Box<Expression> }
[INFO] [stdout]   |                       ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 9 - struct Add { lhs: Box<Expression>, rhs: Box<Expression> }
[INFO] [stdout] 9 + struct Add { lhs: Box<dyn Expression>, rhs: Box<Expression> }
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/main.rs:9:45
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Add { lhs: Box<Expression>, rhs: Box<Expression> }
[INFO] [stdout]   |                                             ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 9 - struct Add { lhs: Box<Expression>, rhs: Box<Expression> }
[INFO] [stdout] 9 + struct Add { lhs: Box<Expression>, rhs: Box<dyn Expression> }
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:10:28
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Subtract { lhs: Box<Expression>, rhs: Box<Expression> }
[INFO] [stdout]    |                            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 10 - struct Subtract { lhs: Box<Expression>, rhs: Box<Expression> }
[INFO] [stdout] 10 + struct Subtract { lhs: Box<dyn Expression>, rhs: Box<Expression> }
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:10:50
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Subtract { lhs: Box<Expression>, rhs: Box<Expression> }
[INFO] [stdout]    |                                                  ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 10 - struct Subtract { lhs: Box<Expression>, rhs: Box<Expression> }
[INFO] [stdout] 10 + struct Subtract { lhs: Box<Expression>, rhs: Box<dyn Expression> }
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:103:59
[INFO] [stdout]     |
[INFO] [stdout] 103 | fn read_operand<T>(chars: &mut Peekable<T>) -> Option<Box<Expression>>
[INFO] [stdout]     |                                                           ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 103 - fn read_operand<T>(chars: &mut Peekable<T>) -> Option<Box<Expression>>
[INFO] [stdout] 103 + fn read_operand<T>(chars: &mut Peekable<T>) -> Option<Box<dyn Expression>>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:137:43
[INFO] [stdout]     |
[INFO] [stdout] 137 | pub fn roll(roll_def: &str) -> Result<Box<Expression>, ParseError>
[INFO] [stdout]     |                                           ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 137 - pub fn roll(roll_def: &str) -> Result<Box<Expression>, ParseError>
[INFO] [stdout] 137 + pub fn roll(roll_def: &str) -> Result<Box<dyn Expression>, ParseError>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]    --> src/main.rs:205:11
[INFO] [stdout]     |
[INFO] [stdout] 205 |         ].into_iter() {
[INFO] [stdout]     |           ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 205 |         ].iter() {
[INFO] [stdout]     |           ~~~~
[INFO] [stdout] help: or remove `.into_iter()` to iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 205 -         ].into_iter() {
[INFO] [stdout] 205 +         ] {
[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 0.38s
[INFO] running `Command { std: "docker" "inspect" "91df3094ac3c0b616d7998fdd74a6edda4a84e44f19d9b5c66825f0eb0a532df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91df3094ac3c0b616d7998fdd74a6edda4a84e44f19d9b5c66825f0eb0a532df", kill_on_drop: false }`
[INFO] [stdout] 91df3094ac3c0b616d7998fdd74a6edda4a84e44f19d9b5c66825f0eb0a532df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2396f4236452aef92c76f350c8266b35f5c03bfb2c275341e3cedcb5dbe8701a
[INFO] running `Command { std: "docker" "start" "-a" "2396f4236452aef92c76f350c8266b35f5c03bfb2c275341e3cedcb5dbe8701a", kill_on_drop: false }`
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/main.rs:92:14
[INFO] [stderr]    |
[INFO] [stderr] 92 |         Some(&'0'...'9') => true,
[INFO] [stderr]    |              ^^^^^^^^^^ help: use `..=` for an inclusive range: `&('0'..='9')`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` 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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/main.rs:106:14
[INFO] [stderr]     |
[INFO] [stderr] 106 |         Some(&'0'...'9') | Some(&'d') => {},
[INFO] [stderr]     |              ^^^^^^^^^^ help: use `..=` for an inclusive range: `&('0'..='9')`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/main.rs:9:23
[INFO] [stderr]   |
[INFO] [stderr] 9 | struct Add { lhs: Box<Expression>, rhs: Box<Expression> }
[INFO] [stderr]   |                       ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]   |
[INFO] [stderr] 9 - struct Add { lhs: Box<Expression>, rhs: Box<Expression> }
[INFO] [stderr] 9 + struct Add { lhs: Box<dyn Expression>, rhs: Box<Expression> }
[INFO] [stderr]   | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/main.rs:9:45
[INFO] [stderr]   |
[INFO] [stderr] 9 | struct Add { lhs: Box<Expression>, rhs: Box<Expression> }
[INFO] [stderr]   |                                             ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]   |
[INFO] [stderr] 9 - struct Add { lhs: Box<Expression>, rhs: Box<Expression> }
[INFO] [stderr] 9 + struct Add { lhs: Box<Expression>, rhs: Box<dyn Expression> }
[INFO] [stderr]   | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:10:28
[INFO] [stderr]    |
[INFO] [stderr] 10 | struct Subtract { lhs: Box<Expression>, rhs: Box<Expression> }
[INFO] [stderr]    |                            ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 10 - struct Subtract { lhs: Box<Expression>, rhs: Box<Expression> }
[INFO] [stderr] 10 + struct Subtract { lhs: Box<dyn Expression>, rhs: Box<Expression> }
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:10:50
[INFO] [stderr]    |
[INFO] [stderr] 10 | struct Subtract { lhs: Box<Expression>, rhs: Box<Expression> }
[INFO] [stderr]    |                                                  ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 10 - struct Subtract { lhs: Box<Expression>, rhs: Box<Expression> }
[INFO] [stderr] 10 + struct Subtract { lhs: Box<Expression>, rhs: Box<dyn Expression> }
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:103:59
[INFO] [stderr]     |
[INFO] [stderr] 103 | fn read_operand<T>(chars: &mut Peekable<T>) -> Option<Box<Expression>>
[INFO] [stderr]     |                                                           ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 103 - fn read_operand<T>(chars: &mut Peekable<T>) -> Option<Box<Expression>>
[INFO] [stderr] 103 + fn read_operand<T>(chars: &mut Peekable<T>) -> Option<Box<dyn Expression>>
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:137:43
[INFO] [stderr]     |
[INFO] [stderr] 137 | pub fn roll(roll_def: &str) -> Result<Box<Expression>, ParseError>
[INFO] [stderr]     |                                           ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 137 - pub fn roll(roll_def: &str) -> Result<Box<Expression>, ParseError>
[INFO] [stderr] 137 + pub fn roll(roll_def: &str) -> Result<Box<dyn Expression>, ParseError>
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stderr]    --> src/main.rs:205:11
[INFO] [stderr]     |
[INFO] [stderr] 205 |         ].into_iter() {
[INFO] [stderr]     |           ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr]     = warning: this changes meaning in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stderr]     |
[INFO] [stderr] 205 |         ].iter() {
[INFO] [stderr]     |           ~~~~
[INFO] [stderr] help: or remove `.into_iter()` to iterate by value
[INFO] [stderr]     |
[INFO] [stderr] 205 -         ].into_iter() {
[INFO] [stderr] 205 +         ] {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: `roll` (bin "roll" test) generated 9 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/roll-0b2f6bd152d1681b)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2396f4236452aef92c76f350c8266b35f5c03bfb2c275341e3cedcb5dbe8701a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2396f4236452aef92c76f350c8266b35f5c03bfb2c275341e3cedcb5dbe8701a", kill_on_drop: false }`
[INFO] [stdout] 2396f4236452aef92c76f350c8266b35f5c03bfb2c275341e3cedcb5dbe8701a