[INFO] fetching crate wasmer-wasi-experimental-io-devices 1.0.0-rc1...
[INFO] testing wasmer-wasi-experimental-io-devices-1.0.0-rc1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate wasmer-wasi-experimental-io-devices 1.0.0-rc1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate wasmer-wasi-experimental-io-devices 1.0.0-rc1 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wasmer-wasi-experimental-io-devices 1.0.0-rc1
[INFO] finished tweaking crates.io crate wasmer-wasi-experimental-io-devices 1.0.0-rc1
[INFO] tweaked toml for crates.io crate wasmer-wasi-experimental-io-devices 1.0.0-rc1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6e94fea7b33e65a11743b8eae3ac05b7bfc85e8519985f33e69fa492cd812d94
[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" "6e94fea7b33e65a11743b8eae3ac05b7bfc85e8519985f33e69fa492cd812d94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e94fea7b33e65a11743b8eae3ac05b7bfc85e8519985f33e69fa492cd812d94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e94fea7b33e65a11743b8eae3ac05b7bfc85e8519985f33e69fa492cd812d94", kill_on_drop: false }`
[INFO] [stdout] 6e94fea7b33e65a11743b8eae3ac05b7bfc85e8519985f33e69fa492cd812d94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dc9b2fec94bdea60f2842c9122349d9279f6d1fcea8ed90b47081ce51d734085
[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" "dc9b2fec94bdea60f2842c9122349d9279f6d1fcea8ed90b47081ce51d734085", kill_on_drop: false }`
[INFO] [stderr]    Compiling target-lexicon v0.11.1
[INFO] [stderr]    Compiling ref_thread_local v0.0.0
[INFO] [stderr]    Compiling wayland-sys v0.27.0
[INFO] [stderr]    Compiling xkbcommon-sys v0.7.4
[INFO] [stderr]    Compiling nom v6.0.1
[INFO] [stderr]    Compiling wasmer-vm v1.0.0-rc1
[INFO] [stderr]    Compiling minifb v0.19.1
[INFO] [stderr]    Compiling inventory v0.1.10
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling memmap2 v0.2.0
[INFO] [stderr]    Compiling raw-window-handle v0.3.3
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling region v2.2.0
[INFO] [stderr]    Compiling getrandom v0.2.1
[INFO] [stderr]    Compiling wayland-scanner v0.27.0
[INFO] [stderr]    Compiling raw-cpuid v7.0.4
[INFO] [stderr]    Compiling backtrace v0.3.55
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling ctor v0.1.17
[INFO] [stderr]    Compiling inventory-impl v0.1.10
[INFO] [stderr]    Compiling ghost v0.1.2
[INFO] [stderr]    Compiling typetag-impl v0.1.6
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling tracing v0.1.22
[INFO] [stderr]    Compiling cranelift-entity v0.68.0
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]    Compiling serde_bytes v0.11.5
[INFO] [stderr]    Compiling bincode v1.3.1
[INFO] [stderr]    Compiling erased-serde v0.3.13
[INFO] [stderr]    Compiling generational-arena v0.2.8
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling wasmer-types v1.0.0-rc1
[INFO] [stderr]    Compiling wasmer-derive v1.0.0-rc1
[INFO] [stderr]    Compiling wayland-commons v0.27.0
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling xkb v0.2.1
[INFO] [stderr]    Compiling typetag v0.1.6
[INFO] [stderr]    Compiling wayland-client v0.27.0
[INFO] [stderr]    Compiling wayland-protocols v0.27.0
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling xcursor v0.3.3
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling enumset_derive v0.5.0
[INFO] [stderr]    Compiling wayland-cursor v0.27.0
[INFO] [stderr]    Compiling enumset v1.0.1
[INFO] [stderr]    Compiling wasmer-compiler v1.0.0-rc1
[INFO] [stderr]    Compiling wasmer-engine v1.0.0-rc1
[INFO] [stderr]    Compiling wasmer v1.0.0-rc1
[INFO] [stderr]    Compiling wasmer-wasi v1.0.0-rc1
[INFO] [stderr]    Compiling wasmer-wasi-experimental-io-devices v1.0.0-rc1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 27s
[INFO] running `Command { std: "docker" "inspect" "dc9b2fec94bdea60f2842c9122349d9279f6d1fcea8ed90b47081ce51d734085", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc9b2fec94bdea60f2842c9122349d9279f6d1fcea8ed90b47081ce51d734085", kill_on_drop: false }`
[INFO] [stdout] dc9b2fec94bdea60f2842c9122349d9279f6d1fcea8ed90b47081ce51d734085
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 00b59ba677f91f3487697870bf05acf81acd7539b59867cf8a866421e78e7746
[INFO] running `Command { std: "docker" "start" "-a" "00b59ba677f91f3487697870bf05acf81acd7539b59867cf8a866421e78e7746", kill_on_drop: false }`
[INFO] [stderr]    Compiling wasmer-wasi-experimental-io-devices v1.0.0-rc1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 8.00s
[INFO] running `Command { std: "docker" "inspect" "00b59ba677f91f3487697870bf05acf81acd7539b59867cf8a866421e78e7746", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00b59ba677f91f3487697870bf05acf81acd7539b59867cf8a866421e78e7746", kill_on_drop: false }`
[INFO] [stdout] 00b59ba677f91f3487697870bf05acf81acd7539b59867cf8a866421e78e7746
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 13fc622e5adaa6d6f6198bddd29efd073005655930820fa1af26cc138b829e6b
[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" "13fc622e5adaa6d6f6198bddd29efd073005655930820fa1af26cc138b829e6b", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.16s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/wasmer_wasi_experimental_io_devices-762b8f16eaa8e674
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests wasmer-wasi-experimental-io-devices
[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] [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] running `Command { std: "docker" "inspect" "13fc622e5adaa6d6f6198bddd29efd073005655930820fa1af26cc138b829e6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13fc622e5adaa6d6f6198bddd29efd073005655930820fa1af26cc138b829e6b", kill_on_drop: false }`
[INFO] [stdout] 13fc622e5adaa6d6f6198bddd29efd073005655930820fa1af26cc138b829e6b