[INFO] fetching crate source-map-mappings 0.5.0... [INFO] checking source-map-mappings-0.5.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] extracting crate source-map-mappings 0.5.0 into /workspace/builds/worker-4-tc1/source [INFO] validating manifest of crates.io crate source-map-mappings 0.5.0 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 source-map-mappings 0.5.0 [INFO] finished tweaking crates.io crate source-map-mappings 0.5.0 [INFO] tweaked toml for crates.io crate source-map-mappings 0.5.0 written to /workspace/builds/worker-4-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 24 packages [INFO] [stderr] Adding aho-corasick v0.6.10 (latest: v1.1.3) [INFO] [stderr] Adding env_logger v0.4.3 (latest: v0.11.3) [INFO] [stderr] Adding log v0.3.9 (latest: v0.4.21) [INFO] [stderr] Adding quickcheck v0.5.0 (latest: v1.0.3) [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 rdrand v0.4.0 (latest: v0.8.3) [INFO] [stderr] Adding regex v0.2.11 (latest: v1.10.4) [INFO] [stderr] Adding regex-syntax v0.5.6 (latest: v0.8.3) [INFO] [stderr] Adding thread_local v0.3.6 (latest: v1.1.8) [INFO] [stderr] Adding ucd-util v0.1.10 (latest: v0.2.1) [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] Downloading crates ... [INFO] [stderr] Downloaded vlq v0.5.1 [INFO] [stderr] Downloaded quickcheck v0.5.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] d3a2f88d8a115213fcdecdef396b21b100ec5432eced473b39e6684d59b8cfb3 [INFO] running `Command { std: "docker" "start" "-a" "d3a2f88d8a115213fcdecdef396b21b100ec5432eced473b39e6684d59b8cfb3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d3a2f88d8a115213fcdecdef396b21b100ec5432eced473b39e6684d59b8cfb3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d3a2f88d8a115213fcdecdef396b21b100ec5432eced473b39e6684d59b8cfb3", kill_on_drop: false }` [INFO] [stdout] d3a2f88d8a115213fcdecdef396b21b100ec5432eced473b39e6684d59b8cfb3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] dfb642735b77c76863c9c199b58f6ef5380ceee9f85c23a6a56c52fc896e2b7e [INFO] running `Command { std: "docker" "start" "-a" "dfb642735b77c76863c9c199b58f6ef5380ceee9f85c23a6a56c52fc896e2b7e", kill_on_drop: false }` [INFO] [stderr] Checking ucd-util v0.1.10 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling regex v0.2.11 [INFO] [stderr] Checking utf8-ranges v1.0.5 [INFO] [stderr] Checking log v0.4.21 [INFO] [stderr] Checking vlq v0.5.1 [INFO] [stderr] Checking aho-corasick v0.6.10 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking regex-syntax v0.5.6 [INFO] [stderr] Checking log v0.3.9 [INFO] [stderr] Checking rand v0.3.23 [INFO] [stderr] Checking source-map-mappings v0.5.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition [INFO] [stdout] --> src/comparators.rs:10:16 [INFO] [stdout] | [INFO] [stdout] 10 | fn compare(&T, &T) -> Ordering; [INFO] [stdout] | ^^ help: try naming the parameter or explicitly ignoring it: `_: &T` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018! [INFO] [stdout] = note: for more information, see issue #41686 [INFO] [stdout] = note: `#[warn(anonymous_parameters)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition [INFO] [stdout] --> src/comparators.rs:10:20 [INFO] [stdout] | [INFO] [stdout] 10 | fn compare(&T, &T) -> Ordering; [INFO] [stdout] | ^^ help: try naming the parameter or explicitly ignoring it: `_: &T` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018! [INFO] [stdout] = note: for more information, see issue #41686 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `observer` is never read [INFO] [stdout] --> src/lib.rs:218:5 [INFO] [stdout] | [INFO] [stdout] 212 | pub struct Mappings [INFO] [stdout] | -------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 218 | observer: O, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Mappings` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/lib.rs:179:9 [INFO] [stdout] | [INFO] [stdout] 179 | mem::replace(self, LazilySorted::Sorted(items, PhantomData, PhantomData)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 179 | let _ = mem::replace(self, LazilySorted::Sorted(items, PhantomData, PhantomData)); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking env_logger v0.4.3 [INFO] [stderr] Checking quickcheck v0.5.0 [INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition [INFO] [stdout] --> src/comparators.rs:10:16 [INFO] [stdout] | [INFO] [stdout] 10 | fn compare(&T, &T) -> Ordering; [INFO] [stdout] | ^^ help: try naming the parameter or explicitly ignoring it: `_: &T` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018! [INFO] [stdout] = note: for more information, see issue #41686 [INFO] [stdout] = note: `#[warn(anonymous_parameters)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition [INFO] [stdout] --> src/comparators.rs:10:20 [INFO] [stdout] | [INFO] [stdout] 10 | fn compare(&T, &T) -> Ordering; [INFO] [stdout] | ^^ help: try naming the parameter or explicitly ignoring it: `_: &T` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018! [INFO] [stdout] = note: for more information, see issue #41686 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> tests/quickcheck.rs:30:29 [INFO] [stdout] | [INFO] [stdout] 30 | fn shrink(&self) -> Box> { [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] 30 | fn shrink(&self) -> Box> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> tests/quickcheck.rs:89:29 [INFO] [stdout] | [INFO] [stdout] 89 | fn shrink(&self) -> Box> { [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] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 89 | fn shrink(&self) -> Box> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> tests/quickcheck.rs:210:29 [INFO] [stdout] | [INFO] [stdout] 210 | fn shrink(&self) -> Box> { [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] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 210 | fn shrink(&self) -> Box> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> tests/quickcheck.rs:240:29 [INFO] [stdout] | [INFO] [stdout] 240 | fn shrink(&self) -> Box> { [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] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 240 | fn shrink(&self) -> Box> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `observer` is never read [INFO] [stdout] --> src/lib.rs:218:5 [INFO] [stdout] | [INFO] [stdout] 212 | pub struct Mappings [INFO] [stdout] | -------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 218 | observer: O, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Mappings` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/lib.rs:179:9 [INFO] [stdout] | [INFO] [stdout] 179 | mem::replace(self, LazilySorted::Sorted(items, PhantomData, PhantomData)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 179 | let _ = mem::replace(self, LazilySorted::Sorted(items, PhantomData, PhantomData)); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.04s [INFO] running `Command { std: "docker" "inspect" "dfb642735b77c76863c9c199b58f6ef5380ceee9f85c23a6a56c52fc896e2b7e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dfb642735b77c76863c9c199b58f6ef5380ceee9f85c23a6a56c52fc896e2b7e", kill_on_drop: false }` [INFO] [stdout] dfb642735b77c76863c9c199b58f6ef5380ceee9f85c23a6a56c52fc896e2b7e [INFO] checking source-map-mappings-0.5.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] extracting crate source-map-mappings 0.5.0 into /workspace/builds/worker-4-tc2/source [INFO] validating manifest of crates.io crate source-map-mappings 0.5.0 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 source-map-mappings 0.5.0 [INFO] finished tweaking crates.io crate source-map-mappings 0.5.0 [INFO] tweaked toml for crates.io crate source-map-mappings 0.5.0 written to /workspace/builds/worker-4-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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 8b99118bf3f93a3084f5b3fb0e7964dd6e679fe9107dc7b092102f054665639a [INFO] running `Command { std: "docker" "start" "-a" "8b99118bf3f93a3084f5b3fb0e7964dd6e679fe9107dc7b092102f054665639a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8b99118bf3f93a3084f5b3fb0e7964dd6e679fe9107dc7b092102f054665639a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8b99118bf3f93a3084f5b3fb0e7964dd6e679fe9107dc7b092102f054665639a", kill_on_drop: false }` [INFO] [stdout] 8b99118bf3f93a3084f5b3fb0e7964dd6e679fe9107dc7b092102f054665639a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] e0965fa0c5da9c1c050a0954b27d3d34e4441d994f42d3472313670c701405c4 [INFO] running `Command { std: "docker" "start" "-a" "e0965fa0c5da9c1c050a0954b27d3d34e4441d994f42d3472313670c701405c4", kill_on_drop: false }` [INFO] [stderr] Checking ucd-util v0.1.10 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling regex v0.2.11 [INFO] [stderr] Checking log v0.4.21 [INFO] [stderr] Checking utf8-ranges v1.0.5 [INFO] [stderr] Checking vlq v0.5.1 [INFO] [stderr] Checking aho-corasick v0.6.10 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking regex-syntax v0.5.6 [INFO] [stderr] Checking log v0.3.9 [INFO] [stderr] Checking rand v0.3.23 [INFO] [stderr] Checking source-map-mappings v0.5.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition [INFO] [stdout] --> src/comparators.rs:10:16 [INFO] [stdout] | [INFO] [stdout] 10 | fn compare(&T, &T) -> Ordering; [INFO] [stdout] | ^^ help: try naming the parameter or explicitly ignoring it: `_: &T` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018! [INFO] [stdout] = note: for more information, see issue #41686 [INFO] [stdout] = note: `#[warn(anonymous_parameters)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition [INFO] [stdout] --> src/comparators.rs:10:20 [INFO] [stdout] | [INFO] [stdout] 10 | fn compare(&T, &T) -> Ordering; [INFO] [stdout] | ^^ help: try naming the parameter or explicitly ignoring it: `_: &T` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018! [INFO] [stdout] = note: for more information, see issue #41686 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `observer` is never read [INFO] [stdout] --> src/lib.rs:218:5 [INFO] [stdout] | [INFO] [stdout] 212 | pub struct Mappings [INFO] [stdout] | -------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 218 | observer: O, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Mappings` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/lib.rs:179:9 [INFO] [stdout] | [INFO] [stdout] 179 | mem::replace(self, LazilySorted::Sorted(items, PhantomData, PhantomData)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 179 | let _ = mem::replace(self, LazilySorted::Sorted(items, PhantomData, PhantomData)); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking env_logger v0.4.3 [INFO] [stderr] Checking quickcheck v0.5.0 [INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition [INFO] [stdout] --> src/comparators.rs:10:16 [INFO] [stdout] | [INFO] [stdout] 10 | fn compare(&T, &T) -> Ordering; [INFO] [stdout] | ^^ help: try naming the parameter or explicitly ignoring it: `_: &T` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018! [INFO] [stdout] = note: for more information, see issue #41686 [INFO] [stdout] = note: `#[warn(anonymous_parameters)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition [INFO] [stdout] --> src/comparators.rs:10:20 [INFO] [stdout] | [INFO] [stdout] 10 | fn compare(&T, &T) -> Ordering; [INFO] [stdout] | ^^ help: try naming the parameter or explicitly ignoring it: `_: &T` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018! [INFO] [stdout] = note: for more information, see issue #41686 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> tests/quickcheck.rs:30:29 [INFO] [stdout] | [INFO] [stdout] 30 | fn shrink(&self) -> Box> { [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] 30 | fn shrink(&self) -> Box> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> tests/quickcheck.rs:89:29 [INFO] [stdout] | [INFO] [stdout] 89 | fn shrink(&self) -> Box> { [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] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 89 | fn shrink(&self) -> Box> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> tests/quickcheck.rs:210:29 [INFO] [stdout] | [INFO] [stdout] 210 | fn shrink(&self) -> Box> { [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] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 210 | fn shrink(&self) -> Box> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> tests/quickcheck.rs:240:29 [INFO] [stdout] | [INFO] [stdout] 240 | fn shrink(&self) -> Box> { [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] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 240 | fn shrink(&self) -> Box> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `observer` is never read [INFO] [stdout] --> src/lib.rs:218:5 [INFO] [stdout] | [INFO] [stdout] 212 | pub struct Mappings [INFO] [stdout] | -------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 218 | observer: O, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Mappings` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/lib.rs:179:9 [INFO] [stdout] | [INFO] [stdout] 179 | mem::replace(self, LazilySorted::Sorted(items, PhantomData, PhantomData)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 179 | let _ = mem::replace(self, LazilySorted::Sorted(items, PhantomData, PhantomData)); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.38s [INFO] running `Command { std: "docker" "inspect" "e0965fa0c5da9c1c050a0954b27d3d34e4441d994f42d3472313670c701405c4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e0965fa0c5da9c1c050a0954b27d3d34e4441d994f42d3472313670c701405c4", kill_on_drop: false }` [INFO] [stdout] e0965fa0c5da9c1c050a0954b27d3d34e4441d994f42d3472313670c701405c4