[INFO] fetching crate engiffen 0.8.1... [INFO] checking engiffen-0.8.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] extracting crate engiffen 0.8.1 into /workspace/builds/worker-1-tc1/source [INFO] validating manifest of crates.io crate engiffen 0.8.1 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate engiffen 0.8.1 [INFO] finished tweaking crates.io crate engiffen 0.8.1 [INFO] tweaked toml for crates.io crate engiffen 0.8.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 42 packages [INFO] [stderr] Adding bitflags v0.7.0 (latest: v2.5.0) [INFO] [stderr] Adding color_quant v1.0.1 (latest: v1.1.0) [INFO] [stderr] Adding deflate v0.7.20 (latest: v1.0.0) [INFO] [stderr] Adding gif v0.9.2 (latest: v0.13.1) [INFO] [stderr] Adding glob v0.2.11 (latest: v0.3.1) [INFO] [stderr] Adding image v0.13.0 (latest: v0.25.1) [INFO] [stderr] Adding inflate v0.2.0 (latest: v0.4.5) [INFO] [stderr] Adding jpeg-decoder v0.1.22 (latest: v0.3.1) [INFO] [stderr] Adding lab v0.4.4 (latest: v0.11.0) [INFO] [stderr] Adding num-rational v0.1.42 (latest: v0.4.1) [INFO] [stderr] Adding num-traits v0.1.43 (latest: v0.2.18) [INFO] [stderr] Adding png v0.7.0 (latest: v0.17.13) [INFO] [stderr] Adding rand v0.3.23 (latest: v0.8.5) [INFO] [stderr] Adding rand v0.4.6 (latest: v0.8.5) [INFO] [stderr] Adding rand_core v0.3.1 (latest: v0.6.4) [INFO] [stderr] Adding rand_core v0.4.2 (latest: v0.6.4) [INFO] [stderr] Adding rayon v0.7.1 (latest: v1.10.0) [INFO] [stderr] Adding rdrand v0.4.0 (latest: v0.8.3) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded num-rational v0.1.42 [INFO] [stderr] Downloaded lab v0.4.4 [INFO] [stderr] Downloaded rayon v0.7.1 [INFO] [stderr] Downloaded enum_primitive v0.1.1 [INFO] [stderr] Downloaded gif v0.9.2 [INFO] [stderr] Downloaded inflate v0.2.0 [INFO] [stderr] Downloaded png v0.7.0 [INFO] [stderr] Downloaded image v0.13.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 869fa5407c14ca97222bbfdc0a307893034074de9bd48382009a77fd7d3ccb13 [INFO] running `Command { std: "docker" "start" "-a" "869fa5407c14ca97222bbfdc0a307893034074de9bd48382009a77fd7d3ccb13", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "869fa5407c14ca97222bbfdc0a307893034074de9bd48382009a77fd7d3ccb13", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "869fa5407c14ca97222bbfdc0a307893034074de9bd48382009a77fd7d3ccb13", kill_on_drop: false }` [INFO] [stdout] 869fa5407c14ca97222bbfdc0a307893034074de9bd48382009a77fd7d3ccb13 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 48677dabbf5ac0f44ce9cf4c8d761c225b94a687c442e18ce7a11bd25dd1a0f3 [INFO] running `Command { std: "docker" "start" "-a" "48677dabbf5ac0f44ce9cf4c8d761c225b94a687c442e18ce7a11bd25dd1a0f3", kill_on_drop: false }` [INFO] [stderr] Checking lzw v0.10.0 [INFO] [stderr] Checking inflate v0.2.0 [INFO] [stderr] Checking color_quant v1.0.1 [INFO] [stderr] Checking lab v0.4.4 [INFO] [stderr] Checking deflate v0.7.20 [INFO] [stderr] Checking getopts v0.2.21 [INFO] [stderr] Checking num-traits v0.1.43 [INFO] [stderr] Checking num-rational v0.1.42 [INFO] [stderr] Checking rayon v0.7.1 [INFO] [stderr] Checking jpeg-decoder v0.1.22 [INFO] [stderr] Checking enum_primitive v0.1.1 [INFO] [stderr] Checking gif v0.9.2 [INFO] [stderr] Checking png v0.7.0 [INFO] [stderr] Checking image v0.13.0 [INFO] [stderr] Checking engiffen v0.8.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `std` is imported redundantly [INFO] [stdout] --> src/parse_args.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | use std; [INFO] [stdout] | ^^^ the item `std` is already imported by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `std` is imported redundantly [INFO] [stdout] --> src/parse_args.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | use std; [INFO] [stdout] | ^^^ the item `std` is already imported by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/main.rs:45:40 [INFO] [stdout] | [INFO] [stdout] 45 | fn run_engiffen(args: &Args) -> Result<((Option, Duration)), RuntimeError> { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 45 - fn run_engiffen(args: &Args) -> Result<((Option, Duration)), RuntimeError> { [INFO] [stdout] 45 + fn run_engiffen(args: &Args) -> Result<(Option, Duration), RuntimeError> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/main.rs:45:40 [INFO] [stdout] | [INFO] [stdout] 45 | fn run_engiffen(args: &Args) -> Result<((Option, Duration)), RuntimeError> { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 45 - fn run_engiffen(args: &Args) -> Result<((Option, Duration)), RuntimeError> { [INFO] [stdout] 45 + fn run_engiffen(args: &Args) -> Result<(Option, Duration), RuntimeError> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/parse_args.rs:87:32 [INFO] [stdout] | [INFO] [stdout] 87 | fn cause(&self) -> Option<&error::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 [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 87 | fn cause(&self) -> Option<&dyn error::Error> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/parse_args.rs:79:46 [INFO] [stdout] | [INFO] [stdout] 79 | ArgsError::Parse(ref err) => err.description(), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/parse_args.rs:80:49 [INFO] [stdout] | [INFO] [stdout] 80 | ArgsError::ParseInt(ref err) => err.description(), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/parse_args.rs:87:32 [INFO] [stdout] | [INFO] [stdout] 87 | fn cause(&self) -> Option<&error::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 [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 87 | fn cause(&self) -> Option<&dyn error::Error> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/parse_args.rs:79:46 [INFO] [stdout] | [INFO] [stdout] 79 | ArgsError::Parse(ref err) => err.description(), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/parse_args.rs:80:49 [INFO] [stdout] | [INFO] [stdout] 80 | ArgsError::ParseInt(ref err) => err.description(), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.06s [INFO] running `Command { std: "docker" "inspect" "48677dabbf5ac0f44ce9cf4c8d761c225b94a687c442e18ce7a11bd25dd1a0f3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "48677dabbf5ac0f44ce9cf4c8d761c225b94a687c442e18ce7a11bd25dd1a0f3", kill_on_drop: false }` [INFO] [stdout] 48677dabbf5ac0f44ce9cf4c8d761c225b94a687c442e18ce7a11bd25dd1a0f3 [INFO] checking engiffen-0.8.1 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] extracting crate engiffen 0.8.1 into /workspace/builds/worker-1-tc2/source [INFO] validating manifest of crates.io crate engiffen 0.8.1 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate engiffen 0.8.1 [INFO] finished tweaking crates.io crate engiffen 0.8.1 [INFO] tweaked toml for crates.io crate engiffen 0.8.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 31cc0c0642c91cd4a857e3139ce80688b5180afe6984ff6d0483cfd38f34dd7f [INFO] running `Command { std: "docker" "start" "-a" "31cc0c0642c91cd4a857e3139ce80688b5180afe6984ff6d0483cfd38f34dd7f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "31cc0c0642c91cd4a857e3139ce80688b5180afe6984ff6d0483cfd38f34dd7f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "31cc0c0642c91cd4a857e3139ce80688b5180afe6984ff6d0483cfd38f34dd7f", kill_on_drop: false }` [INFO] [stdout] 31cc0c0642c91cd4a857e3139ce80688b5180afe6984ff6d0483cfd38f34dd7f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e6681785070433fae5c9e52da56b254fd3608a6ee28dc3b9ee32a288faaf79f1 [INFO] running `Command { std: "docker" "start" "-a" "e6681785070433fae5c9e52da56b254fd3608a6ee28dc3b9ee32a288faaf79f1", kill_on_drop: false }` [INFO] [stderr] Checking deflate v0.7.20 [INFO] [stderr] Checking lzw v0.10.0 [INFO] [stderr] Checking inflate v0.2.0 [INFO] [stderr] Checking color_quant v1.0.1 [INFO] [stderr] Checking lab v0.4.4 [INFO] [stderr] Checking getopts v0.2.21 [INFO] [stderr] Checking num-traits v0.1.43 [INFO] [stderr] Checking num-rational v0.1.42 [INFO] [stderr] Checking rayon v0.7.1 [INFO] [stderr] Checking jpeg-decoder v0.1.22 [INFO] [stderr] Checking enum_primitive v0.1.1 [INFO] [stderr] Checking gif v0.9.2 [INFO] [stderr] Checking png v0.7.0 [INFO] [stderr] Checking image v0.13.0 [INFO] [stderr] Checking engiffen v0.8.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `std` is imported redundantly [INFO] [stdout] --> src/parse_args.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | use std; [INFO] [stdout] | ^^^ the item `std` is already imported by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `std` is imported redundantly [INFO] [stdout] --> src/parse_args.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | use std; [INFO] [stdout] | ^^^ the item `std` is already imported by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/main.rs:45:40 [INFO] [stdout] | [INFO] [stdout] 45 | fn run_engiffen(args: &Args) -> Result<((Option, Duration)), RuntimeError> { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 45 - fn run_engiffen(args: &Args) -> Result<((Option, Duration)), RuntimeError> { [INFO] [stdout] 45 + fn run_engiffen(args: &Args) -> Result<(Option, Duration), RuntimeError> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/main.rs:45:40 [INFO] [stdout] | [INFO] [stdout] 45 | fn run_engiffen(args: &Args) -> Result<((Option, Duration)), RuntimeError> { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 45 - fn run_engiffen(args: &Args) -> Result<((Option, Duration)), RuntimeError> { [INFO] [stdout] 45 + fn run_engiffen(args: &Args) -> Result<(Option, Duration), RuntimeError> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/parse_args.rs:87:32 [INFO] [stdout] | [INFO] [stdout] 87 | fn cause(&self) -> Option<&error::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 [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 87 | fn cause(&self) -> Option<&dyn error::Error> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/parse_args.rs:87:32 [INFO] [stdout] | [INFO] [stdout] 87 | fn cause(&self) -> Option<&error::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 [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 87 | fn cause(&self) -> Option<&dyn error::Error> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/parse_args.rs:79:46 [INFO] [stdout] | [INFO] [stdout] 79 | ArgsError::Parse(ref err) => err.description(), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/parse_args.rs:80:49 [INFO] [stdout] | [INFO] [stdout] 80 | ArgsError::ParseInt(ref err) => err.description(), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/parse_args.rs:79:46 [INFO] [stdout] | [INFO] [stdout] 79 | ArgsError::Parse(ref err) => err.description(), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/parse_args.rs:80:49 [INFO] [stdout] | [INFO] [stdout] 80 | ArgsError::ParseInt(ref err) => err.description(), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.71s [INFO] running `Command { std: "docker" "inspect" "e6681785070433fae5c9e52da56b254fd3608a6ee28dc3b9ee32a288faaf79f1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e6681785070433fae5c9e52da56b254fd3608a6ee28dc3b9ee32a288faaf79f1", kill_on_drop: false }` [INFO] [stdout] e6681785070433fae5c9e52da56b254fd3608a6ee28dc3b9ee32a288faaf79f1