[INFO] fetching crate multitask 0.2.0...
[INFO] checking multitask-0.2.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate multitask 0.2.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate multitask 0.2.0 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate multitask 0.2.0
[INFO] finished tweaking crates.io crate multitask 0.2.0
[INFO] tweaked toml for crates.io crate multitask 0.2.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 34 packages
[INFO] [stderr]       Adding async-channel v1.9.0 (latest: v2.2.0)
[INFO] [stderr]       Adding async-io v0.1.11 (latest: v2.3.2)
[INFO] [stderr]       Adding async-task v3.0.0 (latest: v4.7.0)
[INFO] [stderr]       Adding blocking v0.4.7 (latest: v1.5.1)
[INFO] [stderr]       Adding cfg-if v0.1.10 (latest: v1.0.0)
[INFO] [stderr]       Adding concurrent-queue v1.2.4 (latest: v2.4.0)
[INFO] [stderr]       Adding event-listener v2.5.3 (latest: v5.2.0)
[INFO] [stderr]       Adding fastrand v1.9.0 (latest: v2.0.2)
[INFO] [stderr]       Adding futures-lite v0.1.11 (latest: v2.3.0)
[INFO] [stderr]       Adding parking v1.0.6 (latest: v2.2.0)
[INFO] [stderr]       Adding pin-project-lite v0.1.12 (latest: v0.2.14)
[INFO] [stderr]       Adding polling v0.1.9 (latest: v3.6.0)
[INFO] [stderr]       Adding socket2 v0.3.19 (latest: v0.5.6)
[INFO] [stderr]       Adding vec-arena v0.5.2 (latest: v1.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded blocking v0.4.7
[INFO] [stderr]   Downloaded async-io v0.1.11
[INFO] [stderr]   Downloaded futures-lite v0.1.11
[INFO] [stderr]   Downloaded parking v1.0.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c3e5ae008644fbe8c7c703d0d083621add53e92d2b68a660f9070e7925a16e3f
[INFO] running `Command { std: "docker" "start" "-a" "c3e5ae008644fbe8c7c703d0d083621add53e92d2b68a660f9070e7925a16e3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3e5ae008644fbe8c7c703d0d083621add53e92d2b68a660f9070e7925a16e3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3e5ae008644fbe8c7c703d0d083621add53e92d2b68a660f9070e7925a16e3f", kill_on_drop: false }`
[INFO] [stdout] c3e5ae008644fbe8c7c703d0d083621add53e92d2b68a660f9070e7925a16e3f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5d2ae73d31476595f520100da150ae81390f31b4e620d85f9a1b09f6f35d52ee
[INFO] running `Command { std: "docker" "start" "-a" "5d2ae73d31476595f520100da150ae81390f31b4e620d85f9a1b09f6f35d52ee", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]     Checking parking v2.2.0
[INFO] [stderr]     Checking cache-padded v1.3.0
[INFO] [stderr]     Checking waker-fn v1.1.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking event-listener v2.5.3
[INFO] [stderr]     Checking atomic-waker v1.1.2
[INFO] [stderr]     Checking async-task v3.0.0
[INFO] [stderr]     Checking parking v1.0.6
[INFO] [stderr]     Checking vec-arena v0.5.2
[INFO] [stderr]     Checking concurrent-queue v1.2.4
[INFO] [stderr]     Checking futures-lite v0.1.11
[INFO] [stderr]     Checking multitask v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicBool::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/lib.rs:291:14
[INFO] [stdout]     |
[INFO] [stdout] 291 |             .compare_and_swap(false, true, Ordering::SeqCst)
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking concurrent-queue v2.4.0
[INFO] [stderr]     Checking async-channel v1.9.0
[INFO] [stderr]     Checking blocking v0.4.7
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]     Checking polling v0.1.9
[INFO] [stderr]     Checking async-io v0.1.11
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicBool::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/lib.rs:291:14
[INFO] [stdout]     |
[INFO] [stdout] 291 |             .compare_and_swap(false, true, Ordering::SeqCst)
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` 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 1.46s
[INFO] running `Command { std: "docker" "inspect" "5d2ae73d31476595f520100da150ae81390f31b4e620d85f9a1b09f6f35d52ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d2ae73d31476595f520100da150ae81390f31b4e620d85f9a1b09f6f35d52ee", kill_on_drop: false }`
[INFO] [stdout] 5d2ae73d31476595f520100da150ae81390f31b4e620d85f9a1b09f6f35d52ee