[INFO] fetching crate rust-gc-count 0.1.0...
[INFO] checking rust-gc-count-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate rust-gc-count 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate rust-gc-count 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 rust-gc-count 0.1.0
[INFO] finished tweaking crates.io crate rust-gc-count 0.1.0
[INFO] tweaked toml for crates.io crate rust-gc-count 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate rust-gc-count 0.1.0 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crossbeam v0.8.2
[INFO] [stderr]   Downloaded base64-url v2.0.0
[INFO] [stderr]   Downloaded buf_redux v0.8.4
[INFO] [stderr]   Downloaded seq_io v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 8aaa16968e335c27ac83fb4c6dd2532e10adf28995c0b08fed528a473bef26d9
[INFO] running `Command { std: "docker" "start" "-a" "8aaa16968e335c27ac83fb4c6dd2532e10adf28995c0b08fed528a473bef26d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8aaa16968e335c27ac83fb4c6dd2532e10adf28995c0b08fed528a473bef26d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8aaa16968e335c27ac83fb4c6dd2532e10adf28995c0b08fed528a473bef26d9", kill_on_drop: false }`
[INFO] [stdout] 8aaa16968e335c27ac83fb4c6dd2532e10adf28995c0b08fed528a473bef26d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 263e30c9d836fa6458f471d743d2117882ec1a38d6206311473456477ca096cf
[INFO] running `Command { std: "docker" "start" "-a" "263e30c9d836fa6458f471d743d2117882ec1a38d6206311473456477ca096cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling rustix v0.38.4
[INFO] [stderr]    Compiling crossbeam-queue v0.3.8
[INFO] [stderr]    Compiling quote v1.0.32
[INFO] [stderr]    Compiling serde v1.0.176
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]     Checking buf_redux v0.8.4
[INFO] [stderr]    Compiling syn v2.0.27
[INFO] [stderr]    Compiling serde_derive v1.0.176
[INFO] [stderr]     Checking cpufeatures v0.2.9
[INFO] [stderr]     Checking base64 v0.21.2
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking flate2 v1.0.26
[INFO] [stderr]     Checking base64-url v2.0.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.15
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking is-terminal v0.4.9
[INFO] [stderr]     Checking anstream v0.3.2
[INFO] [stderr]     Checking generic-array v0.14.7
[INFO] [stderr]     Checking crossbeam v0.8.2
[INFO] [stderr]     Checking clap_builder v4.3.19
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking md-5 v0.10.5
[INFO] [stderr]     Checking sha2 v0.10.7
[INFO] [stderr]     Checking seq_io v0.3.1
[INFO] [stderr]    Compiling clap_derive v4.3.12
[INFO] [stderr]     Checking clap v4.3.19
[INFO] [stderr]     Checking rust-gc-count v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `base64_url` is imported redundantly
[INFO] [stdout]  --> src/checksumseq.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use base64_url;
[INFO] [stdout]   |     ^^^^^^^^^^ the item `base64_url` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `base64_url` is imported redundantly
[INFO] [stdout]  --> src/checksumseq.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use base64_url;
[INFO] [stdout]   |     ^^^^^^^^^^ the item `base64_url` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.54s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: buf_redux v0.8.4
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "263e30c9d836fa6458f471d743d2117882ec1a38d6206311473456477ca096cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "263e30c9d836fa6458f471d743d2117882ec1a38d6206311473456477ca096cf", kill_on_drop: false }`
[INFO] [stdout] 263e30c9d836fa6458f471d743d2117882ec1a38d6206311473456477ca096cf
[INFO] checking rust-gc-count-0.1.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate rust-gc-count 0.1.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate rust-gc-count 0.1.0 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rust-gc-count 0.1.0
[INFO] finished tweaking crates.io crate rust-gc-count 0.1.0
[INFO] tweaked toml for crates.io crate rust-gc-count 0.1.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate rust-gc-count 0.1.0 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 58876ec26841f12ec15d4dcb2fc5315446baf9d9e189fa0a5175831f0c7b4e40
[INFO] running `Command { std: "docker" "start" "-a" "58876ec26841f12ec15d4dcb2fc5315446baf9d9e189fa0a5175831f0c7b4e40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58876ec26841f12ec15d4dcb2fc5315446baf9d9e189fa0a5175831f0c7b4e40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58876ec26841f12ec15d4dcb2fc5315446baf9d9e189fa0a5175831f0c7b4e40", kill_on_drop: false }`
[INFO] [stdout] 58876ec26841f12ec15d4dcb2fc5315446baf9d9e189fa0a5175831f0c7b4e40
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 96dd76130d72156685642a4db4921a2d10d97414fffeda275e81fc3ef07a6f4a
[INFO] running `Command { std: "docker" "start" "-a" "96dd76130d72156685642a4db4921a2d10d97414fffeda275e81fc3ef07a6f4a", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling rustix v0.38.4
[INFO] [stderr]    Compiling crossbeam-queue v0.3.8
[INFO] [stderr]    Compiling quote v1.0.32
[INFO] [stderr]    Compiling serde v1.0.176
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]     Checking buf_redux v0.8.4
[INFO] [stderr]    Compiling syn v2.0.27
[INFO] [stderr]    Compiling serde_derive v1.0.176
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking base64 v0.21.2
[INFO] [stderr]     Checking cpufeatures v0.2.9
[INFO] [stderr]     Checking flate2 v1.0.26
[INFO] [stderr]     Checking crossbeam-epoch v0.9.15
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking base64-url v2.0.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking is-terminal v0.4.9
[INFO] [stderr]     Checking crossbeam v0.8.2
[INFO] [stderr]     Checking anstream v0.3.2
[INFO] [stderr]     Checking clap_builder v4.3.19
[INFO] [stderr]     Checking generic-array v0.14.7
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking md-5 v0.10.5
[INFO] [stderr]     Checking sha2 v0.10.7
[INFO] [stderr]    Compiling clap_derive v4.3.12
[INFO] [stderr]     Checking seq_io v0.3.1
[INFO] [stderr]     Checking clap v4.3.19
[INFO] [stderr]     Checking rust-gc-count v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `base64_url` is imported redundantly
[INFO] [stdout]  --> src/checksumseq.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use base64_url;
[INFO] [stdout]   |     ^^^^^^^^^^ the item `base64_url` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `base64_url` is imported redundantly
[INFO] [stdout]  --> src/checksumseq.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use base64_url;
[INFO] [stdout]   |     ^^^^^^^^^^ the item `base64_url` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.40s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: buf_redux v0.8.4
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "96dd76130d72156685642a4db4921a2d10d97414fffeda275e81fc3ef07a6f4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96dd76130d72156685642a4db4921a2d10d97414fffeda275e81fc3ef07a6f4a", kill_on_drop: false }`
[INFO] [stdout] 96dd76130d72156685642a4db4921a2d10d97414fffeda275e81fc3ef07a6f4a