[INFO] cloning repository https://github.com/VukoDrakkeinen/katoptron
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/VukoDrakkeinen/katoptron" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVukoDrakkeinen%2Fkatoptron", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVukoDrakkeinen%2Fkatoptron'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 21d77361ed975728bd55f2734667b862b60bc53d
[INFO] checking VukoDrakkeinen/katoptron against master#e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682 for beta-170-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVukoDrakkeinen%2Fkatoptron" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/VukoDrakkeinen/katoptron on toolchain e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/VukoDrakkeinen/katoptron
[INFO] finished tweaking git repo https://github.com/VukoDrakkeinen/katoptron
[INFO] tweaked toml for git repo https://github.com/VukoDrakkeinen/katoptron written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/VukoDrakkeinen/katoptron already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fe922828cfe9fccaf981bbefbb71472f1303234d0b765d63737f4108e08229d5
[INFO] running `Command { std: "docker" "start" "-a" "fe922828cfe9fccaf981bbefbb71472f1303234d0b765d63737f4108e08229d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe922828cfe9fccaf981bbefbb71472f1303234d0b765d63737f4108e08229d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe922828cfe9fccaf981bbefbb71472f1303234d0b765d63737f4108e08229d5", kill_on_drop: false }`
[INFO] [stdout] fe922828cfe9fccaf981bbefbb71472f1303234d0b765d63737f4108e08229d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f9d38fabe43e84812f49301d3ed2d4e02885ca1eb8b37d093b35cbc7a8d1d11
[INFO] running `Command { std: "docker" "start" "-a" "3f9d38fabe43e84812f49301d3ed2d4e02885ca1eb8b37d093b35cbc7a8d1d11", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.29
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling libc v0.2.54
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]    Compiling cc v1.0.15
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling proc-macro2 v0.2.3
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling pkg-config v0.3.11
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling quote v0.4.2
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling serde v1.0.90
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]    Compiling libdbus-sys v0.1.5
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking arrayvec v0.4.7
[INFO] [stderr]    Compiling syn v0.12.15
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking rustc-demangle v0.1.7
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]     Checking smallvec v0.6.3
[INFO] [stderr]     Checking bitflags v1.0.3
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
[INFO] [stderr]    Compiling bincode v1.1.3
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking dbus v0.6.4
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking atty v0.2.10
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking vec_map v0.8.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking crossbeam v0.7.1
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling display_derive v1.0.0 (https://github.com/withoutboats/display_derive#5d6bac2f)
[INFO] [stderr]    Compiling synstructure v0.7.0
[INFO] [stderr]    Compiling failure_derive v1.0.0 (https://github.com/rust-lang-nursery/failure/#fa39406f)
[INFO] [stderr]     Checking failure v1.0.0 (https://github.com/rust-lang-nursery/failure/#fa39406f)
[INFO] [stderr]    Compiling serde_derive v1.0.90
[INFO] [stderr]    Compiling wstr_macro v0.1.0 (/opt/rustwide/workdir/wstr_macro)
[INFO] [stderr]     Checking ron v0.4.2
[INFO] [stderr]     Checking backtrace v0.3.6
[INFO] [stderr]     Checking error-chain v0.12.0
[INFO] [stderr]     Checking notify-rust v3.5.0
[INFO] [stderr]     Checking katoptron v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_syntax)]
[INFO] [stdout]   |            ^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: replaced with `#[rustc_box]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_syntax)]
[INFO] [stdout]   |            ^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: replaced with `#[rustc_box]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/errors.rs:147:55
[INFO] [stdout]     |
[INFO] [stdout] 147 |         self.map_err(|e| ErrWithContext{ inner: e, context: box f() })
[INFO] [stdout]     |                                                             ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 147 |         self.map_err(|e| ErrWithContext{ inner: e, context: Box::new(f()) })
[INFO] [stdout]     |                                                             ~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/errors.rs:147:55
[INFO] [stdout]     |
[INFO] [stdout] 147 |         self.map_err(|e| ErrWithContext{ inner: e, context: box f() })
[INFO] [stdout]     |                                                             ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 147 |         self.map_err(|e| ErrWithContext{ inner: e, context: Box::new(f()) })
[INFO] [stdout]     |                                                             ~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/errors.rs:180:20
[INFO] [stdout]     |
[INFO] [stdout] 180 |         TxError::Generic(box e, TxErrorKind::Recv)
[INFO] [stdout]     |                          ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 180 |         TxError::Generic(Box::new(e), TxErrorKind::Recv)
[INFO] [stdout]     |                          ~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/errors.rs:180:20
[INFO] [stdout]     |
[INFO] [stdout] 180 |         TxError::Generic(box e, TxErrorKind::Recv)
[INFO] [stdout]     |                          ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 180 |         TxError::Generic(Box::new(e), TxErrorKind::Recv)
[INFO] [stdout]     |                          ~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/errors.rs:186:20
[INFO] [stdout]     |
[INFO] [stdout] 186 |         TxError::Generic(box e, TxErrorKind::Send)
[INFO] [stdout]     |                          ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 186 |         TxError::Generic(Box::new(e), TxErrorKind::Send)
[INFO] [stdout]     |                          ~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/errors.rs:186:20
[INFO] [stdout]     |
[INFO] [stdout] 186 |         TxError::Generic(box e, TxErrorKind::Send)
[INFO] [stdout]     |                          ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 186 |         TxError::Generic(Box::new(e), TxErrorKind::Send)
[INFO] [stdout]     |                          ~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/errors.rs:198:20
[INFO] [stdout]     |
[INFO] [stdout] 198 |         TxError::Generic(box e, TxErrorKind::Io)
[INFO] [stdout]     |                          ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 198 |         TxError::Generic(Box::new(e), TxErrorKind::Io)
[INFO] [stdout]     |                          ~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/errors.rs:205:22
[INFO] [stdout]     |
[INFO] [stdout] 205 |         RecvError::Generic(box e, RecvErrorKind::PayloadDeserializationFailure)
[INFO] [stdout]     |                            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 205 |         RecvError::Generic(Box::new(e), RecvErrorKind::PayloadDeserializationFailure)
[INFO] [stdout]     |                            ~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/errors.rs:198:20
[INFO] [stdout]     |
[INFO] [stdout] 198 |         TxError::Generic(box e, TxErrorKind::Io)
[INFO] [stdout]     |                          ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 198 |         TxError::Generic(Box::new(e), TxErrorKind::Io)
[INFO] [stdout]     |                          ~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/errors.rs:217:22
[INFO] [stdout]     |
[INFO] [stdout] 217 |         RecvError::Generic(box e, RecvErrorKind::Io)
[INFO] [stdout]     |                            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 217 |         RecvError::Generic(Box::new(e), RecvErrorKind::Io)
[INFO] [stdout]     |                            ~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/errors.rs:205:22
[INFO] [stdout]     |
[INFO] [stdout] 205 |         RecvError::Generic(box e, RecvErrorKind::PayloadDeserializationFailure)
[INFO] [stdout]     |                            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 205 |         RecvError::Generic(Box::new(e), RecvErrorKind::PayloadDeserializationFailure)
[INFO] [stdout]     |                            ~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/errors.rs:224:22
[INFO] [stdout]     |
[INFO] [stdout] 224 |         SendError::Generic(box e, SendErrorKind::PayloadSerializationFailure)
[INFO] [stdout]     |                            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 224 |         SendError::Generic(Box::new(e), SendErrorKind::PayloadSerializationFailure)
[INFO] [stdout]     |                            ~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/errors.rs:217:22
[INFO] [stdout]     |
[INFO] [stdout] 217 |         RecvError::Generic(box e, RecvErrorKind::Io)
[INFO] [stdout]     |                            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 217 |         RecvError::Generic(Box::new(e), RecvErrorKind::Io)
[INFO] [stdout]     |                            ~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/errors.rs:229:22
[INFO] [stdout]     |
[INFO] [stdout] 229 |         SendError::Generic(box e, SendErrorKind::Io)
[INFO] [stdout]     |                            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 229 |         SendError::Generic(Box::new(e), SendErrorKind::Io)
[INFO] [stdout]     |                            ~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/errors.rs:224:22
[INFO] [stdout]     |
[INFO] [stdout] 224 |         SendError::Generic(box e, SendErrorKind::PayloadSerializationFailure)
[INFO] [stdout]     |                            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 224 |         SendError::Generic(Box::new(e), SendErrorKind::PayloadSerializationFailure)
[INFO] [stdout]     |                            ~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/errors.rs:229:22
[INFO] [stdout]     |
[INFO] [stdout] 229 |         SendError::Generic(box e, SendErrorKind::Io)
[INFO] [stdout]     |                            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 229 |         SendError::Generic(Box::new(e), SendErrorKind::Io)
[INFO] [stdout]     |                            ~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/errors.rs:25:29
[INFO] [stdout]    |
[INFO] [stdout] 25 |     Generic(#[fail(cause)] Box<Fail>, TxErrorKind),
[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]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 25 |     Generic(#[fail(cause)] Box<dyn Fail>, TxErrorKind),
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/errors.rs:60:29
[INFO] [stdout]    |
[INFO] [stdout] 60 |     Generic(#[fail(cause)] Box<Fail>, RecvErrorKind),
[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] 60 |     Generic(#[fail(cause)] Box<dyn Fail>, RecvErrorKind),
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/errors.rs:92:29
[INFO] [stdout]    |
[INFO] [stdout] 92 |     Generic(#[fail(cause)] Box<Fail>, SendErrorKind),
[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] 92 |     Generic(#[fail(cause)] Box<dyn Fail>, SendErrorKind),
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/errors.rs:114:15
[INFO] [stdout]     |
[INFO] [stdout] 114 |     context: Box<Display + Send + Sync + '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] 114 |     context: Box<dyn Display + Send + Sync + 'static>,
[INFO] [stdout]     |                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/errors.rs:25:29
[INFO] [stdout]    |
[INFO] [stdout] 25 |     Generic(#[fail(cause)] Box<Fail>, TxErrorKind),
[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]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 25 |     Generic(#[fail(cause)] Box<dyn Fail>, TxErrorKind),
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/errors.rs:60:29
[INFO] [stdout]    |
[INFO] [stdout] 60 |     Generic(#[fail(cause)] Box<Fail>, RecvErrorKind),
[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] 60 |     Generic(#[fail(cause)] Box<dyn Fail>, RecvErrorKind),
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/errors.rs:92:29
[INFO] [stdout]    |
[INFO] [stdout] 92 |     Generic(#[fail(cause)] Box<Fail>, SendErrorKind),
[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] 92 |     Generic(#[fail(cause)] Box<dyn Fail>, SendErrorKind),
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/errors.rs:114:15
[INFO] [stdout]     |
[INFO] [stdout] 114 |     context: Box<Display + Send + Sync + '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] 114 |     context: Box<dyn Display + Send + Sync + 'static>,
[INFO] [stdout]     |                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/errors.rs:161:30
[INFO] [stdout]     |
[INFO] [stdout] 161 |         let mut current = self as &Fail;
[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] 161 |         let mut current = self as &dyn Fail;
[INFO] [stdout]     |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/errors.rs:161:30
[INFO] [stdout]     |
[INFO] [stdout] 161 |         let mut current = self as &Fail;
[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] 161 |         let mut current = self as &dyn Fail;
[INFO] [stdout]     |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 9 previous errors; 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 9 previous errors; 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `katoptron` (lib) due to 10 previous errors; 5 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `katoptron` (lib test) due to 10 previous errors; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "3f9d38fabe43e84812f49301d3ed2d4e02885ca1eb8b37d093b35cbc7a8d1d11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f9d38fabe43e84812f49301d3ed2d4e02885ca1eb8b37d093b35cbc7a8d1d11", kill_on_drop: false }`
[INFO] [stdout] 3f9d38fabe43e84812f49301d3ed2d4e02885ca1eb8b37d093b35cbc7a8d1d11
