[INFO] fetching crate promising-future 0.2.4...
[INFO] checking promising-future-0.2.4 against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] extracting crate promising-future 0.2.4 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate promising-future 0.2.4 on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate promising-future 0.2.4
[INFO] finished tweaking crates.io crate promising-future 0.2.4
[INFO] tweaked toml for crates.io crate promising-future 0.2.4 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 826ace605044da70af391dd45eaacafc547c7ae27542bbbc00de1507fff6dfcb
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "826ace605044da70af391dd45eaacafc547c7ae27542bbbc00de1507fff6dfcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "826ace605044da70af391dd45eaacafc547c7ae27542bbbc00de1507fff6dfcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "826ace605044da70af391dd45eaacafc547c7ae27542bbbc00de1507fff6dfcb", kill_on_drop: false }`
[INFO] [stdout] 826ace605044da70af391dd45eaacafc547c7ae27542bbbc00de1507fff6dfcb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 884b07f4f7523f98f28e690cde226f4b2bc81b35761048ff50763a5d80d43890
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "884b07f4f7523f98f28e690cde226f4b2bc81b35761048ff50763a5d80d43890", kill_on_drop: false }`
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking promising-future v0.2.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/fnbox.rs:10:29
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub type Thunk<'a, P> = Box<FnBox<P> + Send + 'a>;
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox<P> + Send + 'a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/fnbox.rs:10:29
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub type Thunk<'a, P> = Box<FnBox<P> + Send + 'a>;
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnBox<P> + Send + 'a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` 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] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> tests/tests.rs:520:29
[INFO] [stdout]     |
[INFO] [stdout] 520 |     let futcount = Arc::new(ATOMIC_USIZE_INIT);
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated constant: `AtomicUsize::new(0)`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> tests/tests.rs:514:29
[INFO] [stdout]     |
[INFO] [stdout] 514 |     use std::sync::atomic::{ATOMIC_USIZE_INIT, Ordering};
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `Command { std: "docker" "inspect" "884b07f4f7523f98f28e690cde226f4b2bc81b35761048ff50763a5d80d43890", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "884b07f4f7523f98f28e690cde226f4b2bc81b35761048ff50763a5d80d43890", kill_on_drop: false }`
[INFO] [stdout] 884b07f4f7523f98f28e690cde226f4b2bc81b35761048ff50763a5d80d43890