[INFO] fetching crate dbg 1.0.4... [INFO] checking dbg-1.0.4 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] extracting crate dbg 1.0.4 into /workspace/builds/worker-7-tc1/source [INFO] validating manifest of crates.io crate dbg 1.0.4 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 dbg 1.0.4 [INFO] finished tweaking crates.io crate dbg 1.0.4 [INFO] tweaked toml for crates.io crate dbg 1.0.4 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] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 2 packages [INFO] [stderr] Adding version_check v0.1.5 (latest: v0.9.4) [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] e7d97eb1ccb9a94b00e24a12d17b672f3a296d8f2c699d8960d8cc8ebe4d255d [INFO] running `Command { std: "docker" "start" "-a" "e7d97eb1ccb9a94b00e24a12d17b672f3a296d8f2c699d8960d8cc8ebe4d255d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e7d97eb1ccb9a94b00e24a12d17b672f3a296d8f2c699d8960d8cc8ebe4d255d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e7d97eb1ccb9a94b00e24a12d17b672f3a296d8f2c699d8960d8cc8ebe4d255d", kill_on_drop: false }` [INFO] [stdout] e7d97eb1ccb9a94b00e24a12d17b672f3a296d8f2c699d8960d8cc8ebe4d255d [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] bdcaa7370eded846d0462e4812128962976e9d18082c4ec66963f614439fe3fa [INFO] running `Command { std: "docker" "start" "-a" "bdcaa7370eded846d0462e4812128962976e9d18082c4ec66963f614439fe3fa", kill_on_drop: false }` [INFO] [stderr] Compiling version_check v0.1.5 [INFO] [stderr] Compiling dbg v1.0.4 (/opt/rustwide/workdir) [INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:7:51 [INFO] [stdout] | [INFO] [stdout] 7 | #![cfg_attr(use_nightly, feature(core_intrinsics, specialization))] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #31844 for more information [INFO] [stdout] = help: consider using `min_specialization` instead, which is more stable and complete [INFO] [stdout] = note: `#[warn(incomplete_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `core_intrinsics` is internal to the compiler or standard library [INFO] [stdout] --> src/lib.rs:7:34 [INFO] [stdout] | [INFO] [stdout] 7 | #![cfg_attr(use_nightly, feature(core_intrinsics, specialization))] [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: using it is strongly discouraged [INFO] [stdout] = note: `#[warn(internal_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:7:51 [INFO] [stdout] | [INFO] [stdout] 7 | #![cfg_attr(use_nightly, feature(core_intrinsics, specialization))] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #31844 for more information [INFO] [stdout] = help: consider using `min_specialization` instead, which is more stable and complete [INFO] [stdout] = note: `#[warn(incomplete_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `core_intrinsics` is internal to the compiler or standard library [INFO] [stdout] --> src/lib.rs:7:34 [INFO] [stdout] | [INFO] [stdout] 7 | #![cfg_attr(use_nightly, feature(core_intrinsics, specialization))] [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: using it is strongly discouraged [INFO] [stdout] = note: `#[warn(internal_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary `unsafe` block [INFO] [stdout] --> src/lib.rs:25:13 [INFO] [stdout] | [INFO] [stdout] 25 | unsafe { type_name::() }) [INFO] [stdout] | ^^^^^^ unnecessary `unsafe` block [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_unsafe)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary `unsafe` block [INFO] [stdout] --> src/lib.rs:25:13 [INFO] [stdout] | [INFO] [stdout] 25 | unsafe { type_name::() }) [INFO] [stdout] | ^^^^^^ unnecessary `unsafe` block [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_unsafe)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `x` and `y` are never read [INFO] [stdout] --> src/lib.rs:215:9 [INFO] [stdout] | [INFO] [stdout] 214 | struct Point { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] 215 | x: usize, [INFO] [stdout] | ^ [INFO] [stdout] 216 | y: usize, [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `Point` 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: field `0` is never read [INFO] [stdout] --> src/lib.rs:268:18 [INFO] [stdout] | [INFO] [stdout] 268 | struct X(usize); [INFO] [stdout] | - ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 268 | struct X(()); [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.01s [INFO] running `Command { std: "docker" "inspect" "bdcaa7370eded846d0462e4812128962976e9d18082c4ec66963f614439fe3fa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bdcaa7370eded846d0462e4812128962976e9d18082c4ec66963f614439fe3fa", kill_on_drop: false }` [INFO] [stdout] bdcaa7370eded846d0462e4812128962976e9d18082c4ec66963f614439fe3fa [INFO] checking dbg-1.0.4 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] extracting crate dbg 1.0.4 into /workspace/builds/worker-7-tc2/source [INFO] validating manifest of crates.io crate dbg 1.0.4 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 dbg 1.0.4 [INFO] finished tweaking crates.io crate dbg 1.0.4 [INFO] tweaked toml for crates.io crate dbg 1.0.4 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] d188111d0f10872139db66267307047e0fc7a2d8012b4e7cf93001a4fe4b5cdd [INFO] running `Command { std: "docker" "start" "-a" "d188111d0f10872139db66267307047e0fc7a2d8012b4e7cf93001a4fe4b5cdd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d188111d0f10872139db66267307047e0fc7a2d8012b4e7cf93001a4fe4b5cdd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d188111d0f10872139db66267307047e0fc7a2d8012b4e7cf93001a4fe4b5cdd", kill_on_drop: false }` [INFO] [stdout] d188111d0f10872139db66267307047e0fc7a2d8012b4e7cf93001a4fe4b5cdd [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] b20bc12cb5d617be811c120e4bc92220db8cc9567bb735fdec9ab910dc672aa7 [INFO] running `Command { std: "docker" "start" "-a" "b20bc12cb5d617be811c120e4bc92220db8cc9567bb735fdec9ab910dc672aa7", kill_on_drop: false }` [INFO] [stderr] Compiling version_check v0.1.5 [INFO] [stderr] Compiling dbg v1.0.4 (/opt/rustwide/workdir) [INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:7:51 [INFO] [stdout] | [INFO] [stdout] 7 | #![cfg_attr(use_nightly, feature(core_intrinsics, specialization))] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #31844 for more information [INFO] [stdout] = help: consider using `min_specialization` instead, which is more stable and complete [INFO] [stdout] = note: `#[warn(incomplete_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `core_intrinsics` is internal to the compiler or standard library [INFO] [stdout] --> src/lib.rs:7:34 [INFO] [stdout] | [INFO] [stdout] 7 | #![cfg_attr(use_nightly, feature(core_intrinsics, specialization))] [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: using it is strongly discouraged [INFO] [stdout] = note: `#[warn(internal_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:7:51 [INFO] [stdout] | [INFO] [stdout] 7 | #![cfg_attr(use_nightly, feature(core_intrinsics, specialization))] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #31844 for more information [INFO] [stdout] = help: consider using `min_specialization` instead, which is more stable and complete [INFO] [stdout] = note: `#[warn(incomplete_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `core_intrinsics` is internal to the compiler or standard library [INFO] [stdout] --> src/lib.rs:7:34 [INFO] [stdout] | [INFO] [stdout] 7 | #![cfg_attr(use_nightly, feature(core_intrinsics, specialization))] [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: using it is strongly discouraged [INFO] [stdout] = note: `#[warn(internal_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary `unsafe` block [INFO] [stdout] --> src/lib.rs:25:13 [INFO] [stdout] | [INFO] [stdout] 25 | unsafe { type_name::() }) [INFO] [stdout] | ^^^^^^ unnecessary `unsafe` block [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_unsafe)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary `unsafe` block [INFO] [stdout] --> src/lib.rs:25:13 [INFO] [stdout] | [INFO] [stdout] 25 | unsafe { type_name::() }) [INFO] [stdout] | ^^^^^^ unnecessary `unsafe` block [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_unsafe)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `x` and `y` are never read [INFO] [stdout] --> src/lib.rs:215:9 [INFO] [stdout] | [INFO] [stdout] 214 | struct Point { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] 215 | x: usize, [INFO] [stdout] | ^ [INFO] [stdout] 216 | y: usize, [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `Point` 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: field `0` is never read [INFO] [stdout] --> src/lib.rs:268:18 [INFO] [stdout] | [INFO] [stdout] 268 | struct X(usize); [INFO] [stdout] | - ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 268 | struct X(()); [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.91s [INFO] running `Command { std: "docker" "inspect" "b20bc12cb5d617be811c120e4bc92220db8cc9567bb735fdec9ab910dc672aa7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b20bc12cb5d617be811c120e4bc92220db8cc9567bb735fdec9ab910dc672aa7", kill_on_drop: false }` [INFO] [stdout] b20bc12cb5d617be811c120e4bc92220db8cc9567bb735fdec9ab910dc672aa7