[INFO] fetching crate p4-cmd 0.1.0...
[INFO] testing p4-cmd-0.1.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate p4-cmd 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate p4-cmd 0.1.0 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 p4-cmd 0.1.0
[INFO] finished tweaking crates.io crate p4-cmd 0.1.0
[INFO] tweaked toml for crates.io crate p4-cmd 0.1.0 written to /workspace/builds/worker-8/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 96b1e44f08e340ab79516706cdc921af2c066d76b61b58650f6ac8f99ccbe616
[INFO] running `Command { std: "docker" "start" "-a" "96b1e44f08e340ab79516706cdc921af2c066d76b61b58650f6ac8f99ccbe616", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "96b1e44f08e340ab79516706cdc921af2c066d76b61b58650f6ac8f99ccbe616", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96b1e44f08e340ab79516706cdc921af2c066d76b61b58650f6ac8f99ccbe616", kill_on_drop: false }`
[INFO] [stdout] 96b1e44f08e340ab79516706cdc921af2c066d76b61b58650f6ac8f99ccbe616
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 807bcbd802e4e7e7707c7a3f8f1254e68544036568eced0697da6152ef83fe9f
[INFO] running `Command { std: "docker" "start" "-a" "807bcbd802e4e7e7707c7a3f8f1254e68544036568eced0697da6152ef83fe9f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling p4-cmd v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:92:19
[INFO] [stdout]    |
[INFO] [stdout] 92 | type ErrorCause = Error + Send + Sync + '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 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 92 - type ErrorCause = Error + Send + Sync + 'static;
[INFO] [stdout] 92 + type ErrorCause = dyn Error + Send + Sync + 'static;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:26:32
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]    |                                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 26 -     fn cause(&self) -> Option<&Error> {
[INFO] [stdout] 26 +     fn cause(&self) -> Option<&dyn Error> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/error.rs:161:32
[INFO] [stdout]     |
[INFO] [stdout] 161 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 161 -     fn cause(&self) -> Option<&Error> {
[INFO] [stdout] 161 +     fn cause(&self) -> Option<&dyn Error> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/error.rs:163:21
[INFO] [stdout]     |
[INFO] [stdout] 163 |             let c: &Error = c.as_ref();
[INFO] [stdout]     |                     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 163 -             let c: &Error = c.as_ref();
[INFO] [stdout] 163 +             let c: &dyn Error = c.as_ref();
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.52s
[INFO] running `Command { std: "docker" "inspect" "807bcbd802e4e7e7707c7a3f8f1254e68544036568eced0697da6152ef83fe9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "807bcbd802e4e7e7707c7a3f8f1254e68544036568eced0697da6152ef83fe9f", kill_on_drop: false }`
[INFO] [stdout] 807bcbd802e4e7e7707c7a3f8f1254e68544036568eced0697da6152ef83fe9f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 6a49e843a642b19c5adf16bcc00f7dd28cc5954c19f55fe68d4ff060e520978a
[INFO] running `Command { std: "docker" "start" "-a" "6a49e843a642b19c5adf16bcc00f7dd28cc5954c19f55fe68d4ff060e520978a", kill_on_drop: false }`
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:92:19
[INFO] [stdout]    |
[INFO] [stdout] 92 | type ErrorCause = Error + Send + Sync + '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 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 92 - type ErrorCause = Error + Send + Sync + 'static;
[INFO] [stdout] 92 + type ErrorCause = dyn Error + Send + Sync + 'static;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:26:32
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]    |                                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 26 -     fn cause(&self) -> Option<&Error> {
[INFO] [stdout] 26 +     fn cause(&self) -> Option<&dyn Error> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/error.rs:161:32
[INFO] [stdout]     |
[INFO] [stdout] 161 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 161 -     fn cause(&self) -> Option<&Error> {
[INFO] [stdout] 161 +     fn cause(&self) -> Option<&dyn Error> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/error.rs:163:21
[INFO] [stdout]     |
[INFO] [stdout] 163 |             let c: &Error = c.as_ref();
[INFO] [stdout]     |                     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 163 -             let c: &Error = c.as_ref();
[INFO] [stdout] 163 +             let c: &dyn Error = c.as_ref();
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling p4-cmd v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:92:19
[INFO] [stdout]    |
[INFO] [stdout] 92 | type ErrorCause = Error + Send + Sync + '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 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 92 - type ErrorCause = Error + Send + Sync + 'static;
[INFO] [stdout] 92 + type ErrorCause = dyn Error + Send + Sync + 'static;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:26:32
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]    |                                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 26 -     fn cause(&self) -> Option<&Error> {
[INFO] [stdout] 26 +     fn cause(&self) -> Option<&dyn Error> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/error.rs:161:32
[INFO] [stdout]     |
[INFO] [stdout] 161 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]     |                                ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 161 -     fn cause(&self) -> Option<&Error> {
[INFO] [stdout] 161 +     fn cause(&self) -> Option<&dyn Error> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/error.rs:163:21
[INFO] [stdout]     |
[INFO] [stdout] 163 |             let c: &Error = c.as_ref();
[INFO] [stdout]     |                     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 163 -             let c: &Error = c.as_ref();
[INFO] [stdout] 163 +             let c: &dyn Error = c.as_ref();
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.32s
[INFO] running `Command { std: "docker" "inspect" "6a49e843a642b19c5adf16bcc00f7dd28cc5954c19f55fe68d4ff060e520978a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a49e843a642b19c5adf16bcc00f7dd28cc5954c19f55fe68d4ff060e520978a", kill_on_drop: false }`
[INFO] [stdout] 6a49e843a642b19c5adf16bcc00f7dd28cc5954c19f55fe68d4ff060e520978a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 6b57da2ba52286f26179e8326a196d65923cda5f25aff80d84e8bfd83a61068a
[INFO] running `Command { std: "docker" "start" "-a" "6b57da2ba52286f26179e8326a196d65923cda5f25aff80d84e8bfd83a61068a", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:92:19
[INFO] [stderr]    |
[INFO] [stderr] 92 | type ErrorCause = Error + Send + Sync + '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 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 92 - type ErrorCause = Error + Send + Sync + 'static;
[INFO] [stderr] 92 + type ErrorCause = dyn Error + Send + Sync + 'static;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:26:32
[INFO] [stderr]    |
[INFO] [stderr] 26 |     fn cause(&self) -> Option<&Error> {
[INFO] [stderr]    |                                ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 26 -     fn cause(&self) -> Option<&Error> {
[INFO] [stderr] 26 +     fn cause(&self) -> Option<&dyn Error> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/error.rs:161:32
[INFO] [stderr]     |
[INFO] [stderr] 161 |     fn cause(&self) -> Option<&Error> {
[INFO] [stderr]     |                                ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 161 -     fn cause(&self) -> Option<&Error> {
[INFO] [stderr] 161 +     fn cause(&self) -> Option<&dyn Error> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/error.rs:163:21
[INFO] [stderr]     |
[INFO] [stderr] 163 |             let c: &Error = c.as_ref();
[INFO] [stderr]     |                     ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 163 -             let c: &Error = c.as_ref();
[INFO] [stderr] 163 +             let c: &dyn Error = c.as_ref();
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: `p4-cmd` (lib) generated 4 warnings
[INFO] [stderr] warning: `p4-cmd` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/p4_cmd-6e011b8c3532ce57)
[INFO] [stdout] 
[INFO] [stdout] running 18 tests
[INFO] [stdout] test parser::test::parse_action ... ok
[INFO] [stdout] test parser::test::parse_change ... ok
[INFO] [stdout] test parser::test::parse_client_file ... ok
[INFO] [stdout] test parser::test::parse_depot_file ... ok
[INFO] [stdout] test parser::test::parse_dir ... ok
[INFO] [stdout] test parser::test::parse_error ... ok
[INFO] [stdout] test parser::test::parse_exit_success ... ok
[INFO] [stdout] test parser::test::parse_exit_positive ... ok
[INFO] [stdout] test parser::test::parse_file_size ... ok
[INFO] [stdout] test parser::test::parse_file_type ... ok
[INFO] [stdout] test parser::test::parse_path ... ok
[INFO] [stdout] test parser::test::parse_rev ... ok
[INFO] [stdout] test print::test::file_binary ... ok
[INFO] [stdout] test print::test::print_binary_single ... ok
[INFO] [stdout] test print::test::print_text_multi ... ok
[INFO] [stdout] test print::test::print_text_single ... ok
[INFO] [stdout] test sync::test::sync_multi ... ok
[INFO] [stdout] test sync::test::sync_single ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests p4-cmd
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test src/p4.rs - p4::P4::where_ (line 217) - compile ... ok
[INFO] [stdout] test src/p4.rs - p4::P4::files (line 163) - compile ... ok
[INFO] [stdout] test src/files.rs - files::FilesCommand (line 22) - compile ... ok
[INFO] [stdout] test src/print.rs - print::PrintCommand (line 22) - compile ... ok
[INFO] [stdout] test src/p4.rs - p4::P4::dirs (line 191) - compile ... ok
[INFO] [stdout] test src/sync.rs - sync::SyncCommand (line 39) - compile ... ok
[INFO] [stdout] test src/dirs.rs - dirs::DirsCommand (line 23) - compile ... ok
[INFO] [stdout] test src/p4.rs - p4::P4::print (line 93) - compile ... ok
[INFO] [stdout] test src/where_.rs - where_::WhereCommand (line 22) - compile ... ok
[INFO] [stdout] test src/p4.rs - p4::P4::sync (line 136) - compile ... ok
[INFO] [stdout] test src/p4.rs - p4::BaseFileType (line 345) ... ok
[INFO] [stdout] test src/p4.rs - p4::FileType (line 563) ... ok
[INFO] [stdout] test src/p4.rs - p4::Action (line 277) ... ok
[INFO] [stdout] test src/p4.rs - p4::FileTypeModifiers (line 453) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.39s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6b57da2ba52286f26179e8326a196d65923cda5f25aff80d84e8bfd83a61068a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b57da2ba52286f26179e8326a196d65923cda5f25aff80d84e8bfd83a61068a", kill_on_drop: false }`
[INFO] [stdout] 6b57da2ba52286f26179e8326a196d65923cda5f25aff80d84e8bfd83a61068a