[INFO] fetching crate blocking 0.4.6...
[INFO] testing blocking-0.4.6 against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] extracting crate blocking 0.4.6 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate blocking 0.4.6 on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate blocking 0.4.6
[INFO] finished tweaking crates.io crate blocking 0.4.6
[INFO] tweaked toml for crates.io crate blocking 0.4.6 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate blocking 0.4.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae1fcc4db4ee2d72bb27ecbc4633161e558996edebd594bb23fed06ce01dd5ec
[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" "ae1fcc4db4ee2d72bb27ecbc4633161e558996edebd594bb23fed06ce01dd5ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae1fcc4db4ee2d72bb27ecbc4633161e558996edebd594bb23fed06ce01dd5ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae1fcc4db4ee2d72bb27ecbc4633161e558996edebd594bb23fed06ce01dd5ec", kill_on_drop: false }`
[INFO] [stdout] ae1fcc4db4ee2d72bb27ecbc4633161e558996edebd594bb23fed06ce01dd5ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 716f451f7d804650f8fbf730a1ec0b0e34070b4b96b152521771a18d5e2a305c
[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" "716f451f7d804650f8fbf730a1ec0b0e34070b4b96b152521771a18d5e2a305c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.31
[INFO] [stderr]    Compiling futures-io v0.3.5
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling parking v1.0.1
[INFO] [stderr]    Compiling futures-channel v0.3.5
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling pin-project-internal v0.4.22
[INFO] [stderr]    Compiling pin-project v0.4.22
[INFO] [stderr]    Compiling futures-util v0.3.5
[INFO] [stderr]    Compiling blocking v0.4.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.58s
[INFO] running `Command { std: "docker" "inspect" "716f451f7d804650f8fbf730a1ec0b0e34070b4b96b152521771a18d5e2a305c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "716f451f7d804650f8fbf730a1ec0b0e34070b4b96b152521771a18d5e2a305c", kill_on_drop: false }`
[INFO] [stdout] 716f451f7d804650f8fbf730a1ec0b0e34070b4b96b152521771a18d5e2a305c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a223eb45c7e93af019c78a49db46c5d37a0e50980a22f4b435228018c69815eb
[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" "a223eb45c7e93af019c78a49db46c5d37a0e50980a22f4b435228018c69815eb", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures v0.3.5
[INFO] [stderr]    Compiling blocking v0.4.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.76s
[INFO] running `Command { std: "docker" "inspect" "a223eb45c7e93af019c78a49db46c5d37a0e50980a22f4b435228018c69815eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a223eb45c7e93af019c78a49db46c5d37a0e50980a22f4b435228018c69815eb", kill_on_drop: false }`
[INFO] [stdout] a223eb45c7e93af019c78a49db46c5d37a0e50980a22f4b435228018c69815eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b49eb2ddc1d0bc3773a9db67b97458f049dc050530886948a2bc85620e597ca8
[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" "b49eb2ddc1d0bc3773a9db67b97458f049dc050530886948a2bc85620e597ca8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.71s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/blocking-2d7322a7b6de97ae
[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
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/block_on-f395e250d6771e52
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/unblock-3e5ed1187f6c0f10
[INFO] [stdout] test yielding ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test seek ... ok
[INFO] [stdout] test sleep ... ok
[INFO] [stdout] test write ... ok
[INFO] [stdout] test read ... ok
[INFO] [stdout] test chan ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests blocking
[INFO] [stdout] 
[INFO] [stdout] running 19 tests
[INFO] [stdout] test src/lib.rs - (line 31) ... ok
[INFO] [stdout] test src/lib.rs - Unblock<T>::with_mut (line 651) ... ok
[INFO] [stdout] test src/lib.rs - Unblock<T>::new (line 604) ... ok
[INFO] [stdout] test src/lib.rs - Unblock<T>::get_mut (line 621) ... ok
[INFO] [stdout] test src/lib.rs - (line 60) ... ok
[INFO] [stdout] test src/lib.rs - Unblock<T>::into_inner (line 698) ... ok
[INFO] [stdout] test src/lib.rs - (line 44) ... ok
[INFO] [stdout] test src/lib.rs - unblock (line 547) ... ok
[INFO] [stdout] test src/lib.rs - unblock (line 507) ... ok
[INFO] [stdout] test src/lib.rs - unblock (line 518) ... ok
[INFO] [stdout] test src/lib.rs - unblock (line 558) ... ok
[INFO] [stdout] test src/lib.rs - BlockOn<T>::get_ref (line 416) ... ok
[INFO] [stdout] test src/lib.rs - BlockOn<T>::into_inner (line 456) ... ok
[INFO] [stdout] test src/lib.rs - BlockOn<T>::new (line 401) ... ok
[INFO] [stdout] test src/lib.rs - (line 76) ... ok
[INFO] [stdout] test src/lib.rs - block_on (line 300) ... ok
[INFO] [stdout] test src/lib.rs - block_on (line 366) ... ok
[INFO] [stdout] test src/lib.rs - BlockOn<T>::get_mut (line 433) ... ok
[INFO] [stdout] test src/lib.rs - Unblock (line 586) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 19 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b49eb2ddc1d0bc3773a9db67b97458f049dc050530886948a2bc85620e597ca8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b49eb2ddc1d0bc3773a9db67b97458f049dc050530886948a2bc85620e597ca8", kill_on_drop: false }`
[INFO] [stdout] b49eb2ddc1d0bc3773a9db67b97458f049dc050530886948a2bc85620e597ca8