[INFO] fetching crate futures-core-preview 0.3.0-alpha.19...
[INFO] checking futures-core-preview-0.3.0-alpha.19 against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-2
[INFO] extracting crate futures-core-preview 0.3.0-alpha.19 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate futures-core-preview 0.3.0-alpha.19 on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate futures-core-preview 0.3.0-alpha.19
[INFO] finished tweaking crates.io crate futures-core-preview 0.3.0-alpha.19
[INFO] tweaked toml for crates.io crate futures-core-preview 0.3.0-alpha.19 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 783b0cd5e8ff5826cbdf628fcbf39afb41f364d8161f00f3983e127575ebe3e9
[INFO] running `Command { std: "docker" "start" "-a" "783b0cd5e8ff5826cbdf628fcbf39afb41f364d8161f00f3983e127575ebe3e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "783b0cd5e8ff5826cbdf628fcbf39afb41f364d8161f00f3983e127575ebe3e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "783b0cd5e8ff5826cbdf628fcbf39afb41f364d8161f00f3983e127575ebe3e9", kill_on_drop: false }`
[INFO] [stdout] 783b0cd5e8ff5826cbdf628fcbf39afb41f364d8161f00f3983e127575ebe3e9
[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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0675c1ada0e1850f4e94a687252c6f496d04222faf40e868df005f14a3e9c058
[INFO] running `Command { std: "docker" "start" "-a" "0675c1ada0e1850f4e94a687252c6f496d04222faf40e868df005f14a3e9c058", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.19 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Box` is imported redundantly
[INFO] [stdout]    --> src/future/future_obj.rs:222:9
[INFO] [stdout]     |
[INFO] [stdout] 222 |     use alloc::boxed::Box;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    --> /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]     |
[INFO] [stdout]     = note: the item `Box` is already defined here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Box` is imported redundantly
[INFO] [stdout]   --> src/future/mod.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |     use alloc::boxed::Box;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Box` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Box` is imported redundantly
[INFO] [stdout]    --> src/stream.rs:199:9
[INFO] [stdout]     |
[INFO] [stdout] 199 |     use alloc::boxed::Box;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    --> /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]     |
[INFO] [stdout]     = note: the item `Box` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Box` is imported redundantly
[INFO] [stdout]    --> src/task/spawn.rs:114:9
[INFO] [stdout]     |
[INFO] [stdout] 114 |     use alloc::boxed::Box;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    --> /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]     |
[INFO] [stdout]     = note: the item `Box` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Box` is imported redundantly
[INFO] [stdout]    --> src/future/future_obj.rs:222:9
[INFO] [stdout]     |
[INFO] [stdout] 222 |     use alloc::boxed::Box;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    --> /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]     |
[INFO] [stdout]     = note: the item `Box` is already defined here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Box` is imported redundantly
[INFO] [stdout]   --> src/future/mod.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |     use alloc::boxed::Box;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Box` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Box` is imported redundantly
[INFO] [stdout]    --> src/stream.rs:199:9
[INFO] [stdout]     |
[INFO] [stdout] 199 |     use alloc::boxed::Box;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    --> /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]     |
[INFO] [stdout]     = note: the item `Box` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Box` is imported redundantly
[INFO] [stdout]    --> src/task/spawn.rs:114:9
[INFO] [stdout]     |
[INFO] [stdout] 114 |     use alloc::boxed::Box;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    --> /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]     |
[INFO] [stdout]     = note: the item `Box` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/task/__internal/atomic_waker.rs:262:26
[INFO] [stdout]     |
[INFO] [stdout] 262 |         match self.state.compare_and_swap(WAITING, REGISTERING, Acquire) {
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/task/__internal/atomic_waker.rs:262:26
[INFO] [stdout]     |
[INFO] [stdout] 262 |         match self.state.compare_and_swap(WAITING, REGISTERING, Acquire) {
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AssertSync` is never used
[INFO] [stdout]    --> src/task/__internal/atomic_waker.rs:202:15
[INFO] [stdout]     |
[INFO] [stdout] 202 |         trait AssertSync: Sync {}
[INFO] [stdout]     |               ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AssertSync` is never used
[INFO] [stdout]    --> src/task/__internal/atomic_waker.rs:202:15
[INFO] [stdout]     |
[INFO] [stdout] 202 |         trait AssertSync: Sync {}
[INFO] [stdout]     |               ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "0675c1ada0e1850f4e94a687252c6f496d04222faf40e868df005f14a3e9c058", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0675c1ada0e1850f4e94a687252c6f496d04222faf40e868df005f14a3e9c058", kill_on_drop: false }`
[INFO] [stdout] 0675c1ada0e1850f4e94a687252c6f496d04222faf40e868df005f14a3e9c058
[INFO] checking futures-core-preview-0.3.0-alpha.19 against try#36dbcaee1a55543dfc181be52a69d99ff46ff62f for pr-122960-2
[INFO] extracting crate futures-core-preview 0.3.0-alpha.19 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate futures-core-preview 0.3.0-alpha.19 on toolchain 36dbcaee1a55543dfc181be52a69d99ff46ff62f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate futures-core-preview 0.3.0-alpha.19
[INFO] finished tweaking crates.io crate futures-core-preview 0.3.0-alpha.19
[INFO] tweaked toml for crates.io crate futures-core-preview 0.3.0-alpha.19 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "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" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9286bce23013fe19d4c297c3393bd874cbc453feba52a0bc8683148334b38eb5
[INFO] running `Command { std: "docker" "start" "-a" "9286bce23013fe19d4c297c3393bd874cbc453feba52a0bc8683148334b38eb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9286bce23013fe19d4c297c3393bd874cbc453feba52a0bc8683148334b38eb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9286bce23013fe19d4c297c3393bd874cbc453feba52a0bc8683148334b38eb5", kill_on_drop: false }`
[INFO] [stdout] 9286bce23013fe19d4c297c3393bd874cbc453feba52a0bc8683148334b38eb5
[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" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 00f528ea3d81ee1b0923f49c09ebb7b64f3c635ac31335c4f74cc1a7b37868fa
[INFO] running `Command { std: "docker" "start" "-a" "00f528ea3d81ee1b0923f49c09ebb7b64f3c635ac31335c4f74cc1a7b37868fa", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] skipping non-2021 edition `2018`
[INFO] running `Command { std: "docker" "inspect" "00f528ea3d81ee1b0923f49c09ebb7b64f3c635ac31335c4f74cc1a7b37868fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00f528ea3d81ee1b0923f49c09ebb7b64f3c635ac31335c4f74cc1a7b37868fa", kill_on_drop: false }`
[INFO] [stdout] 00f528ea3d81ee1b0923f49c09ebb7b64f3c635ac31335c4f74cc1a7b37868fa