[INFO] fetching crate rusty-forest 0.1.2... [INFO] checking rusty-forest-0.1.2 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu [INFO] extracting crate rusty-forest 0.1.2 into /workspace/builds/worker-0-tc1/source [INFO] validating manifest of crates.io crate rusty-forest 0.1.2 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate rusty-forest 0.1.2 [INFO] finished tweaking crates.io crate rusty-forest 0.1.2 [INFO] tweaked toml for crates.io crate rusty-forest 0.1.2 written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] crate crates.io crate rusty-forest 0.1.2 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded libc v0.2.96 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a867f51b49df0a3ab476761927e38ac684e2405149808275fe15ebcc49c888d0 [INFO] running `Command { std: "docker" "start" "-a" "a867f51b49df0a3ab476761927e38ac684e2405149808275fe15ebcc49c888d0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a867f51b49df0a3ab476761927e38ac684e2405149808275fe15ebcc49c888d0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a867f51b49df0a3ab476761927e38ac684e2405149808275fe15ebcc49c888d0", kill_on_drop: false }` [INFO] [stdout] a867f51b49df0a3ab476761927e38ac684e2405149808275fe15ebcc49c888d0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b6ecfb483dc2be51533d78e20a7026e6578b026441d0bc6671599e58d91c67ff [INFO] running `Command { std: "docker" "start" "-a" "b6ecfb483dc2be51533d78e20a7026e6578b026441d0bc6671599e58d91c67ff", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.96 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling num-integer v0.1.44 [INFO] [stderr] Checking numtoa v0.1.0 [INFO] [stderr] Checking unicode-width v0.1.8 [INFO] [stderr] Checking itertools v0.10.1 [INFO] [stderr] Checking getopts v0.2.21 [INFO] [stderr] Checking getrandom v0.2.3 [INFO] [stderr] Checking time v0.1.43 [INFO] [stderr] Checking termion v1.5.6 [INFO] [stderr] Checking rand_core v0.6.3 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking chrono v0.4.19 [INFO] [stderr] Checking rand v0.8.4 [INFO] [stderr] Checking rusty-forest v0.1.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused return value of `str::::to_lowercase` that must be used [INFO] [stdout] --> src/main.rs:622:13 [INFO] [stdout] | [INFO] [stdout] 622 | t.to_lowercase(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this returns the lowercase string as a new String, without modifying the original [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 622 | let _ = t.to_lowercase(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `str::::to_lowercase` that must be used [INFO] [stdout] --> src/main.rs:622:13 [INFO] [stdout] | [INFO] [stdout] 622 | t.to_lowercase(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this returns the lowercase string as a new String, without modifying the original [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 622 | let _ = t.to_lowercase(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `str::::to_lowercase` that must be used [INFO] [stdout] --> src/main.rs:688:13 [INFO] [stdout] | [INFO] [stdout] 688 | x.to_lowercase(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this returns the lowercase string as a new String, without modifying the original [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 688 | let _ = x.to_lowercase(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `str::::to_lowercase` that must be used [INFO] [stdout] --> src/main.rs:688:13 [INFO] [stdout] | [INFO] [stdout] 688 | x.to_lowercase(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this returns the lowercase string as a new String, without modifying the original [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 688 | let _ = x.to_lowercase(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.30s [INFO] running `Command { std: "docker" "inspect" "b6ecfb483dc2be51533d78e20a7026e6578b026441d0bc6671599e58d91c67ff", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b6ecfb483dc2be51533d78e20a7026e6578b026441d0bc6671599e58d91c67ff", kill_on_drop: false }` [INFO] [stdout] b6ecfb483dc2be51533d78e20a7026e6578b026441d0bc6671599e58d91c67ff [INFO] checking rusty-forest-0.1.2 against try#f9935d29d867449445ee008640ccca1bf1ae0889+rustflags=-Dtail_expr_drop_order for crater-rollup-uwu [INFO] extracting crate rusty-forest 0.1.2 into /workspace/builds/worker-0-tc2/source [INFO] validating manifest of crates.io crate rusty-forest 0.1.2 on toolchain f9935d29d867449445ee008640ccca1bf1ae0889 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate rusty-forest 0.1.2 [INFO] finished tweaking crates.io crate rusty-forest 0.1.2 [INFO] tweaked toml for crates.io crate rusty-forest 0.1.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] crate crates.io crate rusty-forest 0.1.2 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" "+f9935d29d867449445ee008640ccca1bf1ae0889" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 82db9c725b7c6c32580157065c59e88f46db77628edf4967b076e5671779c611 [INFO] running `Command { std: "docker" "start" "-a" "82db9c725b7c6c32580157065c59e88f46db77628edf4967b076e5671779c611", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "82db9c725b7c6c32580157065c59e88f46db77628edf4967b076e5671779c611", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "82db9c725b7c6c32580157065c59e88f46db77628edf4967b076e5671779c611", kill_on_drop: false }` [INFO] [stdout] 82db9c725b7c6c32580157065c59e88f46db77628edf4967b076e5671779c611 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Dtail_expr_drop_order" "-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a4f14153dd29cd689051351bd61398232979083abaa946afc0ead35dee9d6f1f [INFO] running `Command { std: "docker" "start" "-a" "a4f14153dd29cd689051351bd61398232979083abaa946afc0ead35dee9d6f1f", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.96 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling num-integer v0.1.44 [INFO] [stderr] Checking numtoa v0.1.0 [INFO] [stderr] Checking unicode-width v0.1.8 [INFO] [stderr] Checking itertools v0.10.1 [INFO] [stderr] Checking getopts v0.2.21 [INFO] [stderr] Checking getrandom v0.2.3 [INFO] [stderr] Checking time v0.1.43 [INFO] [stderr] Checking termion v1.5.6 [INFO] [stderr] Checking rand_core v0.6.3 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking chrono v0.4.19 [INFO] [stderr] Checking rand v0.8.4 [INFO] [stderr] Checking rusty-forest v0.1.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused return value of `str::::to_lowercase` that must be used [INFO] [stdout] --> src/main.rs:622:13 [INFO] [stdout] | [INFO] [stdout] 622 | t.to_lowercase(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this returns the lowercase string as a new String, without modifying the original [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 622 | let _ = t.to_lowercase(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `str::::to_lowercase` that must be used [INFO] [stdout] --> src/main.rs:622:13 [INFO] [stdout] | [INFO] [stdout] 622 | t.to_lowercase(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this returns the lowercase string as a new String, without modifying the original [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 622 | let _ = t.to_lowercase(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `str::::to_lowercase` that must be used [INFO] [stdout] --> src/main.rs:688:13 [INFO] [stdout] | [INFO] [stdout] 688 | x.to_lowercase(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this returns the lowercase string as a new String, without modifying the original [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 688 | let _ = x.to_lowercase(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `str::::to_lowercase` that must be used [INFO] [stdout] --> src/main.rs:688:13 [INFO] [stdout] | [INFO] [stdout] 688 | x.to_lowercase(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this returns the lowercase string as a new String, without modifying the original [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 688 | let _ = x.to_lowercase(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/display.rs:49:26 [INFO] [stdout] | [INFO] [stdout] 35 | let mut screen = AlternateScreen::from(stdout().into_raw_mode().unwrap()); [INFO] [stdout] | ------ these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 49 | hide_cursor: cursor::HideCursor::from(stdout()), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] = note: requested on the command line with `-D tail-expr-drop-order` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/display.rs:49:26 [INFO] [stdout] | [INFO] [stdout] 35 | let mut screen = AlternateScreen::from(stdout().into_raw_mode().unwrap()); [INFO] [stdout] | ------ these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 49 | hide_cursor: cursor::HideCursor::from(stdout()), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] = note: requested on the command line with `-D tail-expr-drop-order` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error; 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error; 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rusty-forest` (bin "rusty-forest") due to 2 previous errors; 2 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `rusty-forest` (bin "rusty-forest" test) due to 2 previous errors; 2 warnings emitted [INFO] running `Command { std: "docker" "inspect" "a4f14153dd29cd689051351bd61398232979083abaa946afc0ead35dee9d6f1f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a4f14153dd29cd689051351bd61398232979083abaa946afc0ead35dee9d6f1f", kill_on_drop: false }` [INFO] [stdout] a4f14153dd29cd689051351bd61398232979083abaa946afc0ead35dee9d6f1f