[INFO] fetching crate sors 0.0.2...
[INFO] checking sors-0.0.2 against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] extracting crate sors 0.0.2 into /workspace/builds/worker-76/source
[INFO] validating manifest of crates.io crate sors 0.0.2 on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sors 0.0.2
[INFO] finished tweaking crates.io crate sors 0.0.2
[INFO] tweaked toml for crates.io crate sors 0.0.2 written to /workspace/builds/worker-76/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
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[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] 164c31af85fd9bb7c21352e7e1526967ae630b2593f50a62cf8427c42073e4a2
[INFO] running `Command { std: "docker" "start" "-a" "164c31af85fd9bb7c21352e7e1526967ae630b2593f50a62cf8427c42073e4a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "164c31af85fd9bb7c21352e7e1526967ae630b2593f50a62cf8427c42073e4a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "164c31af85fd9bb7c21352e7e1526967ae630b2593f50a62cf8427c42073e4a2", kill_on_drop: false }`
[INFO] [stdout] 164c31af85fd9bb7c21352e7e1526967ae630b2593f50a62cf8427c42073e4a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c8fb47547f52403de8300de0a3e73833e9bd570e813119bcb2e3e682a0db26c5
[INFO] running `Command { std: "docker" "start" "-a" "c8fb47547f52403de8300de0a3e73833e9bd570e813119bcb2e3e682a0db26c5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]    Compiling serde v1.0.128
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling nix v0.13.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking utf8-ranges v0.1.3
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[INFO] [stderr]     Checking utf8parse v0.1.1
[INFO] [stderr]     Checking unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking addr2line v0.16.0
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking dirs v1.0.5
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[INFO] [stderr]     Checking subprocess v0.1.20
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_os v0.1.3
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[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking markdown v0.2.0
[INFO] [stderr]     Checking rustyline v4.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.128
[INFO] [stderr]    Compiling snafu-derive v0.3.1
[INFO] [stderr]     Checking snafu v0.3.1
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking serde_json v1.0.66
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking sors v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:20:31
[INFO] [stdout]    |
[INFO] [stdout] 20 |     CustomError { source: Box<std::error::Error> },
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:20:31
[INFO] [stdout]    |
[INFO] [stdout] 20 |     CustomError { source: Box<std::error::Error> },
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/doc.rs:197:58
[INFO] [stdout]     |
[INFO] [stdout] 197 |             where F: Fn(&mut Rc<Task>) -> Result<(), Box<std::error::Error>> {
[INFO] [stdout]     |                                                          ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/doc.rs:467:100
[INFO] [stdout]     |
[INFO] [stdout] 467 | pub fn rec_print<T>(doc: &mut Doc, task_id: &Uuid, level: usize, max_depth: usize, callbacks: &mut CliCallbacks<T>) -> Result<()> {
[INFO] [stdout]     |                                                                                                    ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn CliCallbacks<T>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/doc.rs:483:81
[INFO] [stdout]     |
[INFO] [stdout] 483 | pub fn dump_html_rec<T>(doc: &Doc, dir: &Path, task_ref: &Uuid, callbacks: &mut CliCallbacks<T>) -> Result<()> {
[INFO] [stdout]     |                                                                                 ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn CliCallbacks<T>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/doc.rs:496:77
[INFO] [stdout]     |
[INFO] [stdout] 496 | pub fn dump_html<T>(doc: &Doc, dir: &Path, task_ref: &Uuid, callbacks: &mut CliCallbacks<T>) -> Result<()> {
[INFO] [stdout]     |                                                                             ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn CliCallbacks<T>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/cli.rs:7:27
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub type Func<T, C> = Box<Fn(&mut T, &str, &mut C) -> Result<()>>;
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut T, &str, &mut C) -> Result<()>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cli.rs:33:24
[INFO] [stdout]    |
[INFO] [stdout] 33 |     callbacks: &'a mut CliCallbacks<T>,
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn CliCallbacks<T>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cli.rs:39:35
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn new(callbacks: &'a mut CliCallbacks<T>, state_callbacks: C2) -> Self {
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn CliCallbacks<T>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:20:31
[INFO] [stdout]    |
[INFO] [stdout] 20 |     CustomError { source: Box<std::error::Error> },
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:20:31
[INFO] [stdout]    |
[INFO] [stdout] 20 |     CustomError { source: Box<std::error::Error> },
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/doc.rs:197:58
[INFO] [stdout]     |
[INFO] [stdout] 197 |             where F: Fn(&mut Rc<Task>) -> Result<(), Box<std::error::Error>> {
[INFO] [stdout]     |                                                          ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/doc.rs:467:100
[INFO] [stdout]     |
[INFO] [stdout] 467 | pub fn rec_print<T>(doc: &mut Doc, task_id: &Uuid, level: usize, max_depth: usize, callbacks: &mut CliCallbacks<T>) -> Result<()> {
[INFO] [stdout]     |                                                                                                    ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn CliCallbacks<T>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/doc.rs:483:81
[INFO] [stdout]     |
[INFO] [stdout] 483 | pub fn dump_html_rec<T>(doc: &Doc, dir: &Path, task_ref: &Uuid, callbacks: &mut CliCallbacks<T>) -> Result<()> {
[INFO] [stdout]     |                                                                                 ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn CliCallbacks<T>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/doc.rs:496:77
[INFO] [stdout]     |
[INFO] [stdout] 496 | pub fn dump_html<T>(doc: &Doc, dir: &Path, task_ref: &Uuid, callbacks: &mut CliCallbacks<T>) -> Result<()> {
[INFO] [stdout]     |                                                                             ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn CliCallbacks<T>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/cli.rs:7:27
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub type Func<T, C> = Box<Fn(&mut T, &str, &mut C) -> Result<()>>;
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut T, &str, &mut C) -> Result<()>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cli.rs:33:24
[INFO] [stdout]    |
[INFO] [stdout] 33 |     callbacks: &'a mut CliCallbacks<T>,
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn CliCallbacks<T>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cli.rs:39:35
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn new(callbacks: &'a mut CliCallbacks<T>, state_callbacks: C2) -> Self {
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn CliCallbacks<T>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:20:31
[INFO] [stdout]    |
[INFO] [stdout] 20 |     CustomError { source: Box<std::error::Error> },
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:20:31
[INFO] [stdout]    |
[INFO] [stdout] 20 |     CustomError { source: Box<std::error::Error> },
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/doc.rs:197:58
[INFO] [stdout]     |
[INFO] [stdout] 197 |             where F: Fn(&mut Rc<Task>) -> Result<(), Box<std::error::Error>> {
[INFO] [stdout]     |                                                          ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/doc.rs:467:100
[INFO] [stdout]     |
[INFO] [stdout] 467 | pub fn rec_print<T>(doc: &mut Doc, task_id: &Uuid, level: usize, max_depth: usize, callbacks: &mut CliCallbacks<T>) -> Result<()> {
[INFO] [stdout]     |                                                                                                    ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn CliCallbacks<T>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/doc.rs:483:81
[INFO] [stdout]     |
[INFO] [stdout] 483 | pub fn dump_html_rec<T>(doc: &Doc, dir: &Path, task_ref: &Uuid, callbacks: &mut CliCallbacks<T>) -> Result<()> {
[INFO] [stdout]     |                                                                                 ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn CliCallbacks<T>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/doc.rs:496:77
[INFO] [stdout]     |
[INFO] [stdout] 496 | pub fn dump_html<T>(doc: &Doc, dir: &Path, task_ref: &Uuid, callbacks: &mut CliCallbacks<T>) -> Result<()> {
[INFO] [stdout]     |                                                                             ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn CliCallbacks<T>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/cli.rs:7:27
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub type Func<T, C> = Box<Fn(&mut T, &str, &mut C) -> Result<()>>;
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut T, &str, &mut C) -> Result<()>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cli.rs:33:24
[INFO] [stdout]    |
[INFO] [stdout] 33 |     callbacks: &'a mut CliCallbacks<T>,
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn CliCallbacks<T>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cli.rs:39:35
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn new(callbacks: &'a mut CliCallbacks<T>, state_callbacks: C2) -> Self {
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn CliCallbacks<T>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/helper.rs:36:75
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn display_clocks<T>(clocks: &[Rc<Clock>], doc: &Doc, callbacks: &mut CliCallbacks<T>) {
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn CliCallbacks<T>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:20:31
[INFO] [stdout]    |
[INFO] [stdout] 20 |     CustomError { source: Box<std::error::Error> },
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:20:31
[INFO] [stdout]    |
[INFO] [stdout] 20 |     CustomError { source: Box<std::error::Error> },
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/doc.rs:197:58
[INFO] [stdout]     |
[INFO] [stdout] 197 |             where F: Fn(&mut Rc<Task>) -> Result<(), Box<std::error::Error>> {
[INFO] [stdout]     |                                                          ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/doc.rs:467:100
[INFO] [stdout]     |
[INFO] [stdout] 467 | pub fn rec_print<T>(doc: &mut Doc, task_id: &Uuid, level: usize, max_depth: usize, callbacks: &mut CliCallbacks<T>) -> Result<()> {
[INFO] [stdout]     |                                                                                                    ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn CliCallbacks<T>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/doc.rs:483:81
[INFO] [stdout]     |
[INFO] [stdout] 483 | pub fn dump_html_rec<T>(doc: &Doc, dir: &Path, task_ref: &Uuid, callbacks: &mut CliCallbacks<T>) -> Result<()> {
[INFO] [stdout]     |                                                                                 ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn CliCallbacks<T>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/doc.rs:496:77
[INFO] [stdout]     |
[INFO] [stdout] 496 | pub fn dump_html<T>(doc: &Doc, dir: &Path, task_ref: &Uuid, callbacks: &mut CliCallbacks<T>) -> Result<()> {
[INFO] [stdout]     |                                                                             ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn CliCallbacks<T>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/cli.rs:7:27
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub type Func<T, C> = Box<Fn(&mut T, &str, &mut C) -> Result<()>>;
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut T, &str, &mut C) -> Result<()>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cli.rs:33:24
[INFO] [stdout]    |
[INFO] [stdout] 33 |     callbacks: &'a mut CliCallbacks<T>,
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn CliCallbacks<T>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/cli.rs:39:35
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn new(callbacks: &'a mut CliCallbacks<T>, state_callbacks: C2) -> Self {
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn CliCallbacks<T>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/helper.rs:36:75
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn display_clocks<T>(clocks: &[Rc<Clock>], doc: &Doc, callbacks: &mut CliCallbacks<T>) {
[INFO] [stdout]    |                                                                           ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn CliCallbacks<T>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.18s
[INFO] running `Command { std: "docker" "inspect" "c8fb47547f52403de8300de0a3e73833e9bd570e813119bcb2e3e682a0db26c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8fb47547f52403de8300de0a3e73833e9bd570e813119bcb2e3e682a0db26c5", kill_on_drop: false }`
[INFO] [stdout] c8fb47547f52403de8300de0a3e73833e9bd570e813119bcb2e3e682a0db26c5