[INFO] fetching crate generic_once_cell 0.1.1...
[INFO] checking generic_once_cell-0.1.1 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] extracting crate generic_once_cell 0.1.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate generic_once_cell 0.1.1 on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate generic_once_cell 0.1.1
[INFO] finished tweaking crates.io crate generic_once_cell 0.1.1
[INFO] tweaked toml for crates.io crate generic_once_cell 0.1.1 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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 21 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cdddd1bd728686cb442d359ebc6102f9e61652bd035f97491a3b8bb52425f2af
[INFO] running `Command { std: "docker" "start" "-a" "cdddd1bd728686cb442d359ebc6102f9e61652bd035f97491a3b8bb52425f2af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cdddd1bd728686cb442d359ebc6102f9e61652bd035f97491a3b8bb52425f2af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdddd1bd728686cb442d359ebc6102f9e61652bd035f97491a3b8bb52425f2af", kill_on_drop: false }`
[INFO] [stdout] cdddd1bd728686cb442d359ebc6102f9e61652bd035f97491a3b8bb52425f2af
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 146e3724d8efba0494e964cf380c3120546caa4ea17d4845e85aca64a3cf3467
[INFO] running `Command { std: "docker" "start" "-a" "146e3724d8efba0494e964cf380c3120546caa4ea17d4845e85aca64a3cf3467", kill_on_drop: false }`
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]     Checking generic_once_cell v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:285:13
[INFO] [stdout]     |
[INFO] [stdout] 285 |             Err(void) => match void {},
[INFO] [stdout]     |             ^^^^^^^^^ matches no values because `Void` is uninhabited
[INFO] [stdout]     |
[INFO] [stdout]     = note: to learn more about uninhabited types, see https://doc.rust-lang.org/nomicon/exotic-sizes.html#empty-types
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:285:13
[INFO] [stdout]     |
[INFO] [stdout] 285 |             Err(void) => match void {},
[INFO] [stdout]     |             ^^^^^^^^^ matches no values because `Void` is uninhabited
[INFO] [stdout]     |
[INFO] [stdout]     = note: to learn more about uninhabited types, see https://doc.rust-lang.org/nomicon/exotic-sizes.html#empty-types
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.10s
[INFO] running `Command { std: "docker" "inspect" "146e3724d8efba0494e964cf380c3120546caa4ea17d4845e85aca64a3cf3467", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "146e3724d8efba0494e964cf380c3120546caa4ea17d4845e85aca64a3cf3467", kill_on_drop: false }`
[INFO] [stdout] 146e3724d8efba0494e964cf380c3120546caa4ea17d4845e85aca64a3cf3467
[INFO] checking generic_once_cell-0.1.1 against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] extracting crate generic_once_cell 0.1.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate generic_once_cell 0.1.1 on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate generic_once_cell 0.1.1
[INFO] finished tweaking crates.io crate generic_once_cell 0.1.1
[INFO] tweaked toml for crates.io crate generic_once_cell 0.1.1 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" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 21 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7d1948884050b13ba40f7a75dddb771271a40b94890cec71f1b321ca9f762639
[INFO] running `Command { std: "docker" "start" "-a" "7d1948884050b13ba40f7a75dddb771271a40b94890cec71f1b321ca9f762639", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d1948884050b13ba40f7a75dddb771271a40b94890cec71f1b321ca9f762639", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d1948884050b13ba40f7a75dddb771271a40b94890cec71f1b321ca9f762639", kill_on_drop: false }`
[INFO] [stdout] 7d1948884050b13ba40f7a75dddb771271a40b94890cec71f1b321ca9f762639
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3240958dbd2e21916085c1fbcd4b358c47c0a8fc052b1558eb7d1dc7796ee3f
[INFO] running `Command { std: "docker" "start" "-a" "c3240958dbd2e21916085c1fbcd4b358c47c0a8fc052b1558eb7d1dc7796ee3f", kill_on_drop: false }`
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]     Checking generic_once_cell v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:285:13
[INFO] [stdout]     |
[INFO] [stdout] 285 |             Err(void) => match void {},
[INFO] [stdout]     |             ^^^^^^^^^ matches no values because `Void` is uninhabited
[INFO] [stdout]     |
[INFO] [stdout]     = note: to learn more about uninhabited types, see https://doc.rust-lang.org/nomicon/exotic-sizes.html#empty-types
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:285:13
[INFO] [stdout]     |
[INFO] [stdout] 285 |             Err(void) => match void {},
[INFO] [stdout]     |             ^^^^^^^^^ matches no values because `Void` is uninhabited
[INFO] [stdout]     |
[INFO] [stdout]     = note: to learn more about uninhabited types, see https://doc.rust-lang.org/nomicon/exotic-sizes.html#empty-types
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "c3240958dbd2e21916085c1fbcd4b358c47c0a8fc052b1558eb7d1dc7796ee3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3240958dbd2e21916085c1fbcd4b358c47c0a8fc052b1558eb7d1dc7796ee3f", kill_on_drop: false }`
[INFO] [stdout] c3240958dbd2e21916085c1fbcd4b358c47c0a8fc052b1558eb7d1dc7796ee3f