[INFO] fetching crate len_constraints 0.1.2...
[INFO] testing len_constraints-0.1.2 against 1.60.0 for beta-1.61-1
[INFO] extracting crate len_constraints 0.1.2 into /workspace/builds/worker-57/source
[INFO] validating manifest of crates.io crate len_constraints 0.1.2 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 crates.io crate len_constraints 0.1.2
[INFO] finished tweaking crates.io crate len_constraints 0.1.2
[INFO] tweaked toml for crates.io crate len_constraints 0.1.2 written to /workspace/builds/worker-57/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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] 5c6fcb2a8a368d3e10073057680658516422cdf4bad165839be218c9855ff72f
[INFO] running `Command { std: "docker" "start" "-a" "5c6fcb2a8a368d3e10073057680658516422cdf4bad165839be218c9855ff72f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5c6fcb2a8a368d3e10073057680658516422cdf4bad165839be218c9855ff72f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c6fcb2a8a368d3e10073057680658516422cdf4bad165839be218c9855ff72f", kill_on_drop: false }`
[INFO] [stdout] 5c6fcb2a8a368d3e10073057680658516422cdf4bad165839be218c9855ff72f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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] 49bdfee7c8d94280617ce7e1faf3aa8973175e2e3cd9bd4b0978248e59292aec
[INFO] running `Command { std: "docker" "start" "-a" "49bdfee7c8d94280617ce7e1faf3aa8973175e2e3cd9bd4b0978248e59292aec", kill_on_drop: false }`
[INFO] [stderr]    Compiling len_constraints v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/type_math.rs:41:51
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>>;
[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 2018) 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] 41 -     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>>;
[INFO] [stdout] 41 +     fn r#do(a: usize, b: usize) -> Result<usize, Box<dyn Error + 'static>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/type_math.rs:48:51
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 48 -     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stdout] 48 +     fn r#do(a: usize, b: usize) -> Result<usize, Box<dyn Error + 'static>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/type_math.rs:57:51
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 57 -     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stdout] 57 +     fn r#do(a: usize, b: usize) -> Result<usize, Box<dyn Error + 'static>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/type_math.rs:66:51
[INFO] [stdout]    |
[INFO] [stdout] 66 |     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 66 -     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stdout] 66 +     fn r#do(a: usize, b: usize) -> Result<usize, Box<dyn Error + 'static>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/type_math.rs:75:51
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 75 -     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stdout] 75 +     fn r#do(a: usize, b: usize) -> Result<usize, Box<dyn Error + 'static>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/slice.rs:57:19
[INFO] [stdout]    |
[INFO] [stdout] 57 |     type Error = Box<Error + 'static>;
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 57 -     type Error = Box<Error + 'static>;
[INFO] [stdout] 57 +     type Error = Box<dyn Error + 'static>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/slice.rs:76:19
[INFO] [stdout]    |
[INFO] [stdout] 76 |     type Error = Box<Error + 'static>;
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 76 -     type Error = Box<Error + 'static>;
[INFO] [stdout] 76 +     type Error = Box<dyn Error + 'static>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/slice.rs:100:73
[INFO] [stdout]     |
[INFO] [stdout] 100 |     pub fn try_from(slice: &'a[T], relative_to: usize) -> Result<Self, Box<Error + 'static>> {
[INFO] [stdout]     |                                                                            ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 100 -     pub fn try_from(slice: &'a[T], relative_to: usize) -> Result<Self, Box<Error + 'static>> {
[INFO] [stdout] 100 +     pub fn try_from(slice: &'a[T], relative_to: usize) -> Result<Self, Box<dyn Error + 'static>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/slice.rs:107:63
[INFO] [stdout]     |
[INFO] [stdout] 107 |     pub fn slice(self, relative_to: usize) -> Result<&'a[T], Box<Error + 'static>> {
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 107 -     pub fn slice(self, relative_to: usize) -> Result<&'a[T], Box<Error + 'static>> {
[INFO] [stdout] 107 +     pub fn slice(self, relative_to: usize) -> Result<&'a[T], Box<dyn Error + 'static>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/slice.rs:113:64
[INFO] [stdout]     |
[INFO] [stdout] 113 |     fn validate(len: usize, relative_to: usize) -> Result<(), Box<Error + 'static>> {
[INFO] [stdout]     |                                                                   ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 113 -     fn validate(len: usize, relative_to: usize) -> Result<(), Box<Error + 'static>> {
[INFO] [stdout] 113 +     fn validate(len: usize, relative_to: usize) -> Result<(), Box<dyn Error + 'static>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/slice_mut.rs:81:19
[INFO] [stdout]    |
[INFO] [stdout] 81 |     type Error = Box<Error + 'static>;
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 81 -     type Error = Box<Error + 'static>;
[INFO] [stdout] 81 +     type Error = Box<dyn Error + 'static>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/slice_mut.rs:100:19
[INFO] [stdout]     |
[INFO] [stdout] 100 |     type Error = Box<Error + 'static>;
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 100 -     type Error = Box<Error + 'static>;
[INFO] [stdout] 100 +     type Error = Box<dyn Error + 'static>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/slice_mut.rs:124:77
[INFO] [stdout]     |
[INFO] [stdout] 124 |     pub fn try_from(slice: &'a mut[T], relative_to: usize) -> Result<Self, Box<Error + 'static>> {
[INFO] [stdout]     |                                                                                ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 124 -     pub fn try_from(slice: &'a mut[T], relative_to: usize) -> Result<Self, Box<Error + 'static>> {
[INFO] [stdout] 124 +     pub fn try_from(slice: &'a mut[T], relative_to: usize) -> Result<Self, Box<dyn Error + 'static>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/slice_mut.rs:131:63
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub fn slice(self, relative_to: usize) -> Result<&'a[T], Box<Error + 'static>> {
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 131 -     pub fn slice(self, relative_to: usize) -> Result<&'a[T], Box<Error + 'static>> {
[INFO] [stdout] 131 +     pub fn slice(self, relative_to: usize) -> Result<&'a[T], Box<dyn Error + 'static>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/slice_mut.rs:137:71
[INFO] [stdout]     |
[INFO] [stdout] 137 |     pub fn slice_mut(self, relative_to: usize) -> Result<&'a mut[T], Box<Error + 'static>> {
[INFO] [stdout]     |                                                                          ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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 slice_mut(self, relative_to: usize) -> Result<&'a mut[T], Box<Error + 'static>> {
[INFO] [stdout] 137 +     pub fn slice_mut(self, relative_to: usize) -> Result<&'a mut[T], Box<dyn Error + 'static>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/slice_mut.rs:143:64
[INFO] [stdout]     |
[INFO] [stdout] 143 |     fn validate(len: usize, relative_to: usize) -> Result<(), Box<Error + 'static>> {
[INFO] [stdout]     |                                                                   ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 143 -     fn validate(len: usize, relative_to: usize) -> Result<(), Box<Error + 'static>> {
[INFO] [stdout] 143 +     fn validate(len: usize, relative_to: usize) -> Result<(), Box<dyn Error + 'static>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "49bdfee7c8d94280617ce7e1faf3aa8973175e2e3cd9bd4b0978248e59292aec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49bdfee7c8d94280617ce7e1faf3aa8973175e2e3cd9bd4b0978248e59292aec", kill_on_drop: false }`
[INFO] [stdout] 49bdfee7c8d94280617ce7e1faf3aa8973175e2e3cd9bd4b0978248e59292aec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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] 43b0c18e28b1e2f3c82f84a32d18ec9556c89259da76923543aeb68bd91b0e6b
[INFO] running `Command { std: "docker" "start" "-a" "43b0c18e28b1e2f3c82f84a32d18ec9556c89259da76923543aeb68bd91b0e6b", kill_on_drop: false }`
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/type_math.rs:41:51
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>>;
[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 2018) 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] 41 -     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>>;
[INFO] [stdout] 41 +     fn r#do(a: usize, b: usize) -> Result<usize, Box<dyn Error + 'static>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/type_math.rs:48:51
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 48 -     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stdout] 48 +     fn r#do(a: usize, b: usize) -> Result<usize, Box<dyn Error + 'static>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/type_math.rs:57:51
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 57 -     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stdout] 57 +     fn r#do(a: usize, b: usize) -> Result<usize, Box<dyn Error + 'static>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/type_math.rs:66:51
[INFO] [stdout]    |
[INFO] [stdout] 66 |     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 66 -     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stdout] 66 +     fn r#do(a: usize, b: usize) -> Result<usize, Box<dyn Error + 'static>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/type_math.rs:75:51
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 75 -     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stdout] 75 +     fn r#do(a: usize, b: usize) -> Result<usize, Box<dyn Error + 'static>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling len_constraints v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/slice.rs:57:19
[INFO] [stdout]    |
[INFO] [stdout] 57 |     type Error = Box<Error + 'static>;
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 57 -     type Error = Box<Error + 'static>;
[INFO] [stdout] 57 +     type Error = Box<dyn Error + 'static>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/slice.rs:76:19
[INFO] [stdout]    |
[INFO] [stdout] 76 |     type Error = Box<Error + 'static>;
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 76 -     type Error = Box<Error + 'static>;
[INFO] [stdout] 76 +     type Error = Box<dyn Error + 'static>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/slice.rs:100:73
[INFO] [stdout]     |
[INFO] [stdout] 100 |     pub fn try_from(slice: &'a[T], relative_to: usize) -> Result<Self, Box<Error + 'static>> {
[INFO] [stdout]     |                                                                            ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 100 -     pub fn try_from(slice: &'a[T], relative_to: usize) -> Result<Self, Box<Error + 'static>> {
[INFO] [stdout] 100 +     pub fn try_from(slice: &'a[T], relative_to: usize) -> Result<Self, Box<dyn Error + 'static>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/slice.rs:107:63
[INFO] [stdout]     |
[INFO] [stdout] 107 |     pub fn slice(self, relative_to: usize) -> Result<&'a[T], Box<Error + 'static>> {
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 107 -     pub fn slice(self, relative_to: usize) -> Result<&'a[T], Box<Error + 'static>> {
[INFO] [stdout] 107 +     pub fn slice(self, relative_to: usize) -> Result<&'a[T], Box<dyn Error + 'static>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/slice.rs:113:64
[INFO] [stdout]     |
[INFO] [stdout] 113 |     fn validate(len: usize, relative_to: usize) -> Result<(), Box<Error + 'static>> {
[INFO] [stdout]     |                                                                   ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 113 -     fn validate(len: usize, relative_to: usize) -> Result<(), Box<Error + 'static>> {
[INFO] [stdout] 113 +     fn validate(len: usize, relative_to: usize) -> Result<(), Box<dyn Error + 'static>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/slice_mut.rs:81:19
[INFO] [stdout]    |
[INFO] [stdout] 81 |     type Error = Box<Error + 'static>;
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 81 -     type Error = Box<Error + 'static>;
[INFO] [stdout] 81 +     type Error = Box<dyn Error + 'static>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/slice_mut.rs:100:19
[INFO] [stdout]     |
[INFO] [stdout] 100 |     type Error = Box<Error + 'static>;
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 100 -     type Error = Box<Error + 'static>;
[INFO] [stdout] 100 +     type Error = Box<dyn Error + 'static>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/slice_mut.rs:124:77
[INFO] [stdout]     |
[INFO] [stdout] 124 |     pub fn try_from(slice: &'a mut[T], relative_to: usize) -> Result<Self, Box<Error + 'static>> {
[INFO] [stdout]     |                                                                                ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 124 -     pub fn try_from(slice: &'a mut[T], relative_to: usize) -> Result<Self, Box<Error + 'static>> {
[INFO] [stdout] 124 +     pub fn try_from(slice: &'a mut[T], relative_to: usize) -> Result<Self, Box<dyn Error + 'static>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/slice_mut.rs:131:63
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub fn slice(self, relative_to: usize) -> Result<&'a[T], Box<Error + 'static>> {
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 131 -     pub fn slice(self, relative_to: usize) -> Result<&'a[T], Box<Error + 'static>> {
[INFO] [stdout] 131 +     pub fn slice(self, relative_to: usize) -> Result<&'a[T], Box<dyn Error + 'static>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/slice_mut.rs:137:71
[INFO] [stdout]     |
[INFO] [stdout] 137 |     pub fn slice_mut(self, relative_to: usize) -> Result<&'a mut[T], Box<Error + 'static>> {
[INFO] [stdout]     |                                                                          ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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 slice_mut(self, relative_to: usize) -> Result<&'a mut[T], Box<Error + 'static>> {
[INFO] [stdout] 137 +     pub fn slice_mut(self, relative_to: usize) -> Result<&'a mut[T], Box<dyn Error + 'static>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/slice_mut.rs:143:64
[INFO] [stdout]     |
[INFO] [stdout] 143 |     fn validate(len: usize, relative_to: usize) -> Result<(), Box<Error + 'static>> {
[INFO] [stdout]     |                                                                   ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 143 -     fn validate(len: usize, relative_to: usize) -> Result<(), Box<Error + 'static>> {
[INFO] [stdout] 143 +     fn validate(len: usize, relative_to: usize) -> Result<(), Box<dyn Error + 'static>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> tests/constraint_macro.rs:10:29
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn test() -> Result<(), Box<Error + 'static>> {
[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 2018) 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 - fn test() -> Result<(), Box<Error + 'static>> {
[INFO] [stdout] 10 + fn test() -> Result<(), Box<dyn Error + 'static>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/type_math.rs:41:51
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>>;
[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 2018) 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] 41 -     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>>;
[INFO] [stdout] 41 +     fn r#do(a: usize, b: usize) -> Result<usize, Box<dyn Error + 'static>>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/type_math.rs:48:51
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 48 -     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stdout] 48 +     fn r#do(a: usize, b: usize) -> Result<usize, Box<dyn Error + 'static>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/type_math.rs:57:51
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 57 -     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stdout] 57 +     fn r#do(a: usize, b: usize) -> Result<usize, Box<dyn Error + 'static>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/type_math.rs:66:51
[INFO] [stdout]    |
[INFO] [stdout] 66 |     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 66 -     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stdout] 66 +     fn r#do(a: usize, b: usize) -> Result<usize, Box<dyn Error + 'static>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/type_math.rs:75:51
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 75 -     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stdout] 75 +     fn r#do(a: usize, b: usize) -> Result<usize, Box<dyn Error + 'static>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/slice.rs:57:19
[INFO] [stdout]    |
[INFO] [stdout] 57 |     type Error = Box<Error + 'static>;
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 57 -     type Error = Box<Error + 'static>;
[INFO] [stdout] 57 +     type Error = Box<dyn Error + 'static>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/slice.rs:76:19
[INFO] [stdout]    |
[INFO] [stdout] 76 |     type Error = Box<Error + 'static>;
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 76 -     type Error = Box<Error + 'static>;
[INFO] [stdout] 76 +     type Error = Box<dyn Error + 'static>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/slice.rs:100:73
[INFO] [stdout]     |
[INFO] [stdout] 100 |     pub fn try_from(slice: &'a[T], relative_to: usize) -> Result<Self, Box<Error + 'static>> {
[INFO] [stdout]     |                                                                            ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 100 -     pub fn try_from(slice: &'a[T], relative_to: usize) -> Result<Self, Box<Error + 'static>> {
[INFO] [stdout] 100 +     pub fn try_from(slice: &'a[T], relative_to: usize) -> Result<Self, Box<dyn Error + 'static>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/slice.rs:107:63
[INFO] [stdout]     |
[INFO] [stdout] 107 |     pub fn slice(self, relative_to: usize) -> Result<&'a[T], Box<Error + 'static>> {
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 107 -     pub fn slice(self, relative_to: usize) -> Result<&'a[T], Box<Error + 'static>> {
[INFO] [stdout] 107 +     pub fn slice(self, relative_to: usize) -> Result<&'a[T], Box<dyn Error + 'static>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/slice.rs:113:64
[INFO] [stdout]     |
[INFO] [stdout] 113 |     fn validate(len: usize, relative_to: usize) -> Result<(), Box<Error + 'static>> {
[INFO] [stdout]     |                                                                   ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 113 -     fn validate(len: usize, relative_to: usize) -> Result<(), Box<Error + 'static>> {
[INFO] [stdout] 113 +     fn validate(len: usize, relative_to: usize) -> Result<(), Box<dyn Error + 'static>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/slice_mut.rs:81:19
[INFO] [stdout]    |
[INFO] [stdout] 81 |     type Error = Box<Error + 'static>;
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 81 -     type Error = Box<Error + 'static>;
[INFO] [stdout] 81 +     type Error = Box<dyn Error + 'static>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/slice_mut.rs:100:19
[INFO] [stdout]     |
[INFO] [stdout] 100 |     type Error = Box<Error + 'static>;
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 100 -     type Error = Box<Error + 'static>;
[INFO] [stdout] 100 +     type Error = Box<dyn Error + 'static>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/slice_mut.rs:124:77
[INFO] [stdout]     |
[INFO] [stdout] 124 |     pub fn try_from(slice: &'a mut[T], relative_to: usize) -> Result<Self, Box<Error + 'static>> {
[INFO] [stdout]     |                                                                                ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 124 -     pub fn try_from(slice: &'a mut[T], relative_to: usize) -> Result<Self, Box<Error + 'static>> {
[INFO] [stdout] 124 +     pub fn try_from(slice: &'a mut[T], relative_to: usize) -> Result<Self, Box<dyn Error + 'static>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/slice_mut.rs:131:63
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub fn slice(self, relative_to: usize) -> Result<&'a[T], Box<Error + 'static>> {
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 131 -     pub fn slice(self, relative_to: usize) -> Result<&'a[T], Box<Error + 'static>> {
[INFO] [stdout] 131 +     pub fn slice(self, relative_to: usize) -> Result<&'a[T], Box<dyn Error + 'static>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/slice_mut.rs:137:71
[INFO] [stdout]     |
[INFO] [stdout] 137 |     pub fn slice_mut(self, relative_to: usize) -> Result<&'a mut[T], Box<Error + 'static>> {
[INFO] [stdout]     |                                                                          ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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 slice_mut(self, relative_to: usize) -> Result<&'a mut[T], Box<Error + 'static>> {
[INFO] [stdout] 137 +     pub fn slice_mut(self, relative_to: usize) -> Result<&'a mut[T], Box<dyn Error + 'static>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/slice_mut.rs:143:64
[INFO] [stdout]     |
[INFO] [stdout] 143 |     fn validate(len: usize, relative_to: usize) -> Result<(), Box<Error + 'static>> {
[INFO] [stdout]     |                                                                   ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) 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] 143 -     fn validate(len: usize, relative_to: usize) -> Result<(), Box<Error + 'static>> {
[INFO] [stdout] 143 +     fn validate(len: usize, relative_to: usize) -> Result<(), Box<dyn Error + 'static>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.79s
[INFO] running `Command { std: "docker" "inspect" "43b0c18e28b1e2f3c82f84a32d18ec9556c89259da76923543aeb68bd91b0e6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43b0c18e28b1e2f3c82f84a32d18ec9556c89259da76923543aeb68bd91b0e6b", kill_on_drop: false }`
[INFO] [stdout] 43b0c18e28b1e2f3c82f84a32d18ec9556c89259da76923543aeb68bd91b0e6b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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] e59f2dc7c0d66ca56fc139535439b14a86129e39a47496a49c8827833a3c7d76
[INFO] running `Command { std: "docker" "start" "-a" "e59f2dc7c0d66ca56fc139535439b14a86129e39a47496a49c8827833a3c7d76", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/type_math.rs:41:51
[INFO] [stderr]    |
[INFO] [stderr] 41 |     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>>;
[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 2018) 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] 41 -     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>>;
[INFO] [stderr] 41 +     fn r#do(a: usize, b: usize) -> Result<usize, Box<dyn Error + 'static>>;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/type_math.rs:48:51
[INFO] [stderr]    |
[INFO] [stderr] 48 |     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stderr]    |                                                      ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) 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] 48 -     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stderr] 48 +     fn r#do(a: usize, b: usize) -> Result<usize, Box<dyn Error + 'static>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/type_math.rs:57:51
[INFO] [stderr]    |
[INFO] [stderr] 57 |     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stderr]    |                                                      ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) 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] 57 -     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stderr] 57 +     fn r#do(a: usize, b: usize) -> Result<usize, Box<dyn Error + 'static>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/type_math.rs:66:51
[INFO] [stderr]    |
[INFO] [stderr] 66 |     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stderr]    |                                                      ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) 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] 66 -     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stderr] 66 +     fn r#do(a: usize, b: usize) -> Result<usize, Box<dyn Error + 'static>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/type_math.rs:75:51
[INFO] [stderr]    |
[INFO] [stderr] 75 |     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stderr]    |                                                      ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) 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] 75 -     fn r#do(a: usize, b: usize) -> Result<usize, Box<Error + 'static>> {
[INFO] [stderr] 75 +     fn r#do(a: usize, b: usize) -> Result<usize, Box<dyn Error + 'static>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/slice.rs:57:19
[INFO] [stderr]    |
[INFO] [stderr] 57 |     type Error = Box<Error + 'static>;
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) 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] 57 -     type Error = Box<Error + 'static>;
[INFO] [stderr] 57 +     type Error = Box<dyn Error + 'static>;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/slice.rs:76:19
[INFO] [stderr]    |
[INFO] [stderr] 76 |     type Error = Box<Error + 'static>;
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) 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] 76 -     type Error = Box<Error + 'static>;
[INFO] [stderr] 76 +     type Error = Box<dyn Error + 'static>;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/slice.rs:100:73
[INFO] [stderr]     |
[INFO] [stderr] 100 |     pub fn try_from(slice: &'a[T], relative_to: usize) -> Result<Self, Box<Error + 'static>> {
[INFO] [stderr]     |                                                                            ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) 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] 100 -     pub fn try_from(slice: &'a[T], relative_to: usize) -> Result<Self, Box<Error + 'static>> {
[INFO] [stderr] 100 +     pub fn try_from(slice: &'a[T], relative_to: usize) -> Result<Self, Box<dyn Error + 'static>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/slice.rs:107:63
[INFO] [stderr]     |
[INFO] [stderr] 107 |     pub fn slice(self, relative_to: usize) -> Result<&'a[T], Box<Error + 'static>> {
[INFO] [stderr]     |                                                                  ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) 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] 107 -     pub fn slice(self, relative_to: usize) -> Result<&'a[T], Box<Error + 'static>> {
[INFO] [stderr] 107 +     pub fn slice(self, relative_to: usize) -> Result<&'a[T], Box<dyn Error + 'static>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/slice.rs:113:64
[INFO] [stderr]     |
[INFO] [stderr] 113 |     fn validate(len: usize, relative_to: usize) -> Result<(), Box<Error + 'static>> {
[INFO] [stderr]     |                                                                   ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) 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] 113 -     fn validate(len: usize, relative_to: usize) -> Result<(), Box<Error + 'static>> {
[INFO] [stderr] 113 +     fn validate(len: usize, relative_to: usize) -> Result<(), Box<dyn Error + 'static>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/slice_mut.rs:81:19
[INFO] [stderr]    |
[INFO] [stderr] 81 |     type Error = Box<Error + 'static>;
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) 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] 81 -     type Error = Box<Error + 'static>;
[INFO] [stderr] 81 +     type Error = Box<dyn Error + 'static>;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/slice_mut.rs:100:19
[INFO] [stderr]     |
[INFO] [stderr] 100 |     type Error = Box<Error + 'static>;
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) 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] 100 -     type Error = Box<Error + 'static>;
[INFO] [stderr] 100 +     type Error = Box<dyn Error + 'static>;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/slice_mut.rs:124:77
[INFO] [stderr]     |
[INFO] [stderr] 124 |     pub fn try_from(slice: &'a mut[T], relative_to: usize) -> Result<Self, Box<Error + 'static>> {
[INFO] [stderr]     |                                                                                ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) 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] 124 -     pub fn try_from(slice: &'a mut[T], relative_to: usize) -> Result<Self, Box<Error + 'static>> {
[INFO] [stderr] 124 +     pub fn try_from(slice: &'a mut[T], relative_to: usize) -> Result<Self, Box<dyn Error + 'static>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/slice_mut.rs:131:63
[INFO] [stderr]     |
[INFO] [stderr] 131 |     pub fn slice(self, relative_to: usize) -> Result<&'a[T], Box<Error + 'static>> {
[INFO] [stderr]     |                                                                  ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) 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] 131 -     pub fn slice(self, relative_to: usize) -> Result<&'a[T], Box<Error + 'static>> {
[INFO] [stderr] 131 +     pub fn slice(self, relative_to: usize) -> Result<&'a[T], Box<dyn Error + 'static>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/slice_mut.rs:137:71
[INFO] [stderr]     |
[INFO] [stderr] 137 |     pub fn slice_mut(self, relative_to: usize) -> Result<&'a mut[T], Box<Error + 'static>> {
[INFO] [stderr]     |                                                                          ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) 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 slice_mut(self, relative_to: usize) -> Result<&'a mut[T], Box<Error + 'static>> {
[INFO] [stderr] 137 +     pub fn slice_mut(self, relative_to: usize) -> Result<&'a mut[T], Box<dyn Error + 'static>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/slice_mut.rs:143:64
[INFO] [stderr]     |
[INFO] [stderr] 143 |     fn validate(len: usize, relative_to: usize) -> Result<(), Box<Error + 'static>> {
[INFO] [stderr]     |                                                                   ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) 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] 143 -     fn validate(len: usize, relative_to: usize) -> Result<(), Box<Error + 'static>> {
[INFO] [stderr] 143 +     fn validate(len: usize, relative_to: usize) -> Result<(), Box<dyn Error + 'static>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: `len_constraints` (lib) generated 16 warnings
[INFO] [stderr] warning: `len_constraints` (lib test) generated 16 warnings (16 duplicates)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> tests/constraint_macro.rs:10:29
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn test() -> Result<(), Box<Error + 'static>> {
[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 2018) 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 - fn test() -> Result<(), Box<Error + 'static>> {
[INFO] [stderr] 10 + fn test() -> Result<(), Box<dyn Error + 'static>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: `len_constraints` (test "constraint_macro") generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.60s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/len_constraints-cd9759049d2c022a)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/constraint_macro.rs (/opt/rustwide/target/debug/deps/constraint_macro-03dc74e01924ba38)
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running tests/lib.rs (/opt/rustwide/target/debug/deps/lib-26d3ad64ff8ae6f5)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test 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] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test test_constraint_violation_fixed ... ok
[INFO] [stdout] test test_constraint_violation_range ... ok
[INFO] [stdout] test test_constraint_violation_relative ... ok
[INFO] [stdout] test test_constraint_violation_range_panic_0 - should panic ... ok
[INFO] [stdout] test test_constraint_violation_fixed_panic - should panic ... ok
[INFO] [stdout] test test_constraint_violation_range_panic_1 - should panic ... ok
[INFO] [stdout] test test_constraint_violation_relative_panic_1 - should panic ... ok
[INFO] [stdout] test test_constraint_violation_relative_panic_0 - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/slice.rs (/opt/rustwide/target/debug/deps/slice-42365863a5eef9e0)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test test_fixed ... ok
[INFO] [stdout] test test_fixed_err ... ok
[INFO] [stdout] test test_ranged ... ok
[INFO] [stdout] test test_ranged_err ... ok
[INFO] [stdout] test test_relative_err ... ok
[INFO] [stdout] test test_relative ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/slice_mut.rs (/opt/rustwide/target/debug/deps/slice_mut-5f0a5a23d86bebb0)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/type_math.rs (/opt/rustwide/target/debug/deps/type_math-c1896ffedde3492e)
[INFO] [stdout] running 6 tests
[INFO] [stderr]    Doc-tests len_constraints
[INFO] [stdout] test test_fixed_mut ... ok
[INFO] [stdout] test test_fixed_mut_err ... ok
[INFO] [stdout] test test_ranged_mut ... ok
[INFO] [stdout] test test_ranged_mut_err ... ok
[INFO] [stdout] test test_relative_mut ... ok
[INFO] [stdout] test test_relative_mut_err ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test test_add_err ... ok
[INFO] [stdout] test test_div ... ok
[INFO] [stdout] test test_div_err ... ok
[INFO] [stdout] test test_mul ... ok
[INFO] [stdout] test test_add ... ok
[INFO] [stdout] test test_mul_err ... ok
[INFO] [stdout] test test_sub ... ok
[INFO] [stdout] test test_sub_err ... ok
[INFO] [stdout] test test_type_num ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - (line 27) ... ignored
[INFO] [stdout] test src/lib.rs - (line 8) ... ignored
[INFO] [stdout] test src/lib.rs - (line 46) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 2 ignored; 0 measured; 0 filtered out; finished in 0.39s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e59f2dc7c0d66ca56fc139535439b14a86129e39a47496a49c8827833a3c7d76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e59f2dc7c0d66ca56fc139535439b14a86129e39a47496a49c8827833a3c7d76", kill_on_drop: false }`
[INFO] [stdout] e59f2dc7c0d66ca56fc139535439b14a86129e39a47496a49c8827833a3c7d76