[INFO] fetching crate nstack 0.11.0-rc.0...
[INFO] testing nstack-0.11.0-rc.0 against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] extracting crate nstack 0.11.0-rc.0 into /workspace/builds/worker-101/source
[INFO] validating manifest of crates.io crate nstack 0.11.0-rc.0 on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-101/source/rust-toolchain
[INFO] started tweaking crates.io crate nstack 0.11.0-rc.0
[INFO] finished tweaking crates.io crate nstack 0.11.0-rc.0
[INFO] tweaked toml for crates.io crate nstack 0.11.0-rc.0 written to /workspace/builds/worker-101/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bytecheck v0.6.6
[INFO] [stderr]   Downloaded seahash v4.1.0
[INFO] [stderr]   Downloaded bytecheck_derive v0.6.5
[INFO] [stderr]   Downloaded ptr_meta_derive v0.1.4
[INFO] [stderr]   Downloaded ptr_meta v0.1.4
[INFO] [stderr]   Downloaded rend v0.3.4
[INFO] [stderr]   Downloaded rkyv_derive v0.7.24
[INFO] [stderr]   Downloaded rkyv v0.7.24
[INFO] [stderr]   Downloaded microkelvin v0.11.0-rc.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 271b05ffd50978eeb57ec323b6c53a5b254eb418300efd34dcb60feac2a8449a
[INFO] running `Command { std: "docker" "start" "-a" "271b05ffd50978eeb57ec323b6c53a5b254eb418300efd34dcb60feac2a8449a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "271b05ffd50978eeb57ec323b6c53a5b254eb418300efd34dcb60feac2a8449a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "271b05ffd50978eeb57ec323b6c53a5b254eb418300efd34dcb60feac2a8449a", kill_on_drop: false }`
[INFO] [stdout] 271b05ffd50978eeb57ec323b6c53a5b254eb418300efd34dcb60feac2a8449a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b048c1eb62af8fe4a258001938b23f33868a0a25521e80f8f31e6ccec537ea43
[INFO] running `Command { std: "docker" "start" "-a" "b048c1eb62af8fe4a258001938b23f33868a0a25521e80f8f31e6ccec537ea43", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling bytecheck v0.6.6
[INFO] [stderr]    Compiling rend v0.3.4
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling smallvec v1.7.0
[INFO] [stderr]    Compiling rkyv v0.7.24
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling seahash v4.1.0
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling owning_ref v0.4.1
[INFO] [stderr]    Compiling lock_api v0.4.5
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling ptr_meta_derive v0.1.4
[INFO] [stderr]    Compiling bytecheck_derive v0.6.5
[INFO] [stderr]    Compiling rkyv_derive v0.7.24
[INFO] [stderr]    Compiling ptr_meta v0.1.4
[INFO] [stderr]    Compiling microkelvin v0.11.0-rc.0
[INFO] [stderr]    Compiling nstack v0.11.0-rc.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.74s
[INFO] running `Command { std: "docker" "inspect" "b048c1eb62af8fe4a258001938b23f33868a0a25521e80f8f31e6ccec537ea43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b048c1eb62af8fe4a258001938b23f33868a0a25521e80f8f31e6ccec537ea43", kill_on_drop: false }`
[INFO] [stdout] b048c1eb62af8fe4a258001938b23f33868a0a25521e80f8f31e6ccec537ea43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8f64da0688ad0935cbad5039ccbe2252410967e31af67ad0f7f669399dbc8b2c
[INFO] running `Command { std: "docker" "start" "-a" "8f64da0688ad0935cbad5039ccbe2252410967e31af67ad0f7f669399dbc8b2c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling nstack v0.11.0-rc.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.47s
[INFO] running `Command { std: "docker" "inspect" "8f64da0688ad0935cbad5039ccbe2252410967e31af67ad0f7f669399dbc8b2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f64da0688ad0935cbad5039ccbe2252410967e31af67ad0f7f669399dbc8b2c", kill_on_drop: false }`
[INFO] [stdout] 8f64da0688ad0935cbad5039ccbe2252410967e31af67ad0f7f669399dbc8b2c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dae273b3b2609efa1ebced65aeeac9b748c62e5ec89d03f1ab236c7f66c7633a
[INFO] running `Command { std: "docker" "start" "-a" "dae273b3b2609efa1ebced65aeeac9b748c62e5ec89d03f1ab236c7f66c7633a", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/nstack-2dd3c403156425f9)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/nstack.rs (/opt/rustwide/target/debug/deps/nstack-b383fc635e7c419d)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test double ... ok
[INFO] [stdout] test branch_lengths ... ok
[INFO] [stdout] test push_pop ... ok
[INFO] [stdout] test multiple ... ok
[INFO] [stdout] test trivial ... ok
[INFO] [stdout] test nth ... ok
[INFO] [stdout] test persist ... ok
[INFO] [stderr]    Doc-tests nstack
[INFO] [stdout] test nth_mut ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "dae273b3b2609efa1ebced65aeeac9b748c62e5ec89d03f1ab236c7f66c7633a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dae273b3b2609efa1ebced65aeeac9b748c62e5ec89d03f1ab236c7f66c7633a", kill_on_drop: false }`
[INFO] [stdout] dae273b3b2609efa1ebced65aeeac9b748c62e5ec89d03f1ab236c7f66c7633a