[INFO] fetching crate luther 0.1.0... [INFO] checking luther-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] extracting crate luther 0.1.0 into /workspace/builds/worker-7-tc1/source [INFO] validating manifest of crates.io crate luther 0.1.0 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 luther 0.1.0 [INFO] finished tweaking crates.io crate luther 0.1.0 [INFO] tweaked toml for crates.io crate luther 0.1.0 written to /workspace/builds/worker-7-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 50 packages [INFO] [stderr] Adding aho-corasick v0.6.10 (latest: v1.1.3) [INFO] [stderr] Adding encode_unicode v0.3.6 (latest: v1.0.0) [INFO] [stderr] Adding env_logger v0.5.13 (latest: v0.11.3) [INFO] [stderr] Adding hermit-abi v0.1.19 (latest: v0.3.9) [INFO] [stderr] Adding humantime v1.3.0 (latest: v2.1.0) [INFO] [stderr] Adding object v0.32.2 (latest: v0.34.0) [INFO] [stderr] Adding quick-error v1.2.3 (latest: v2.0.1) [INFO] [stderr] Adding quickcheck v0.6.2 (latest: v1.0.3) [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 syn v1.0.109 (latest: v2.0.58) [INFO] [stderr] Adding synstructure v0.12.6 (latest: v0.13.1) [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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] c6934ced7879c0055b88c43c32d3371bd4fc575071d8ffd3bec4f1e1ef58e04b [INFO] running `Command { std: "docker" "start" "-a" "c6934ced7879c0055b88c43c32d3371bd4fc575071d8ffd3bec4f1e1ef58e04b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c6934ced7879c0055b88c43c32d3371bd4fc575071d8ffd3bec4f1e1ef58e04b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c6934ced7879c0055b88c43c32d3371bd4fc575071d8ffd3bec4f1e1ef58e04b", kill_on_drop: false }` [INFO] [stdout] c6934ced7879c0055b88c43c32d3371bd4fc575071d8ffd3bec4f1e1ef58e04b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] bd0fa3a70d3e2322eeee2a1ecf916c539828ef5ac854a5da7d67e431a5c89097 [INFO] running `Command { std: "docker" "start" "-a" "bd0fa3a70d3e2322eeee2a1ecf916c539828ef5ac854a5da7d67e431a5c89097", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] Compiling unicode-xid v0.2.4 [INFO] [stderr] Checking gimli v0.28.1 [INFO] [stderr] Checking object v0.32.2 [INFO] [stderr] Checking rustc-demangle v0.1.23 [INFO] [stderr] Compiling backtrace v0.3.71 [INFO] [stderr] Checking miniz_oxide v0.7.2 [INFO] [stderr] Compiling regex v0.2.11 [INFO] [stderr] Checking ucd-util v0.1.10 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking aho-corasick v0.6.10 [INFO] [stderr] Checking env_logger v0.5.13 [INFO] [stderr] Checking utf8-ranges v1.0.5 [INFO] [stderr] Checking encode_unicode v0.3.6 [INFO] [stderr] Checking assert_matches v1.5.0 [INFO] [stderr] Checking regex-syntax v0.5.6 [INFO] [stderr] Checking quickcheck v0.6.2 [INFO] [stderr] Checking addr2line v0.21.0 [INFO] [stderr] Compiling synstructure v0.12.6 [INFO] [stderr] Checking failure v0.1.8 [INFO] [stderr] Checking luther v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `quickcheck` is imported redundantly [INFO] [stdout] --> src/dfa.rs:234:9 [INFO] [stdout] | [INFO] [stdout] 234 | use quickcheck; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:33:1 [INFO] [stdout] | [INFO] [stdout] 33 | extern crate quickcheck; [INFO] [stdout] | ------------------------ the item `quickcheck` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/spanned.rs:153:17 [INFO] [stdout] | [INFO] [stdout] 153 | E: Into>, [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] 153 | E: Into>, [INFO] [stdout] | +++++ + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/spanned.rs:153:17 [INFO] [stdout] | [INFO] [stdout] 153 | E: Into>, [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] 153 | E: Into>, [INFO] [stdout] | +++++ + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused arithmetic operation that must be used [INFO] [stdout] --> src/span.rs:132:9 [INFO] [stdout] | [INFO] [stdout] 132 | Location::new(usize::max_value()) + 3; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the arithmetic operation produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 132 | let _ = Location::new(usize::max_value()) + 3; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.59s [INFO] running `Command { std: "docker" "inspect" "bd0fa3a70d3e2322eeee2a1ecf916c539828ef5ac854a5da7d67e431a5c89097", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bd0fa3a70d3e2322eeee2a1ecf916c539828ef5ac854a5da7d67e431a5c89097", kill_on_drop: false }` [INFO] [stdout] bd0fa3a70d3e2322eeee2a1ecf916c539828ef5ac854a5da7d67e431a5c89097 [INFO] checking luther-0.1.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] extracting crate luther 0.1.0 into /workspace/builds/worker-7-tc2/source [INFO] validating manifest of crates.io crate luther 0.1.0 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 luther 0.1.0 [INFO] finished tweaking crates.io crate luther 0.1.0 [INFO] tweaked toml for crates.io crate luther 0.1.0 written to /workspace/builds/worker-7-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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] f3e151de9588febeddc4e1f01012ffca560958e641c0861986c27cabf25d05fc [INFO] running `Command { std: "docker" "start" "-a" "f3e151de9588febeddc4e1f01012ffca560958e641c0861986c27cabf25d05fc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f3e151de9588febeddc4e1f01012ffca560958e641c0861986c27cabf25d05fc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f3e151de9588febeddc4e1f01012ffca560958e641c0861986c27cabf25d05fc", kill_on_drop: false }` [INFO] [stdout] f3e151de9588febeddc4e1f01012ffca560958e641c0861986c27cabf25d05fc [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] d37d0a69c44f1002648afebc77fb83cb1624e5b8ddac911274cf0d16c013f825 [INFO] running `Command { std: "docker" "start" "-a" "d37d0a69c44f1002648afebc77fb83cb1624e5b8ddac911274cf0d16c013f825", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Checking gimli v0.28.1 [INFO] [stderr] Compiling unicode-xid v0.2.4 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] Checking object v0.32.2 [INFO] [stderr] Checking rustc-demangle v0.1.23 [INFO] [stderr] Compiling backtrace v0.3.71 [INFO] [stderr] Checking miniz_oxide v0.7.2 [INFO] [stderr] Compiling regex v0.2.11 [INFO] [stderr] Checking ucd-util v0.1.10 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking aho-corasick v0.6.10 [INFO] [stderr] Checking env_logger v0.5.13 [INFO] [stderr] Checking encode_unicode v0.3.6 [INFO] [stderr] Checking utf8-ranges v1.0.5 [INFO] [stderr] Checking regex-syntax v0.5.6 [INFO] [stderr] Checking assert_matches v1.5.0 [INFO] [stderr] Checking quickcheck v0.6.2 [INFO] [stderr] Compiling synstructure v0.12.6 [INFO] [stderr] Checking addr2line v0.21.0 [INFO] [stderr] Checking failure v0.1.8 [INFO] [stderr] Checking luther v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `quickcheck` is imported redundantly [INFO] [stdout] --> src/dfa.rs:234:9 [INFO] [stdout] | [INFO] [stdout] 234 | use quickcheck; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:33:1 [INFO] [stdout] | [INFO] [stdout] 33 | extern crate quickcheck; [INFO] [stdout] | ------------------------ the item `quickcheck` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/spanned.rs:153:17 [INFO] [stdout] | [INFO] [stdout] 153 | E: Into>, [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] 153 | E: Into>, [INFO] [stdout] | +++++ + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/spanned.rs:153:17 [INFO] [stdout] | [INFO] [stdout] 153 | E: Into>, [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] 153 | E: Into>, [INFO] [stdout] | +++++ + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused arithmetic operation that must be used [INFO] [stdout] --> src/span.rs:132:9 [INFO] [stdout] | [INFO] [stdout] 132 | Location::new(usize::max_value()) + 3; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the arithmetic operation produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 132 | let _ = Location::new(usize::max_value()) + 3; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.02s [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "d37d0a69c44f1002648afebc77fb83cb1624e5b8ddac911274cf0d16c013f825", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d37d0a69c44f1002648afebc77fb83cb1624e5b8ddac911274cf0d16c013f825", kill_on_drop: false }` [INFO] [stdout] d37d0a69c44f1002648afebc77fb83cb1624e5b8ddac911274cf0d16c013f825