[INFO] fetching crate wasmer-wasi-experimental-io-devices 1.0.0-alpha4...
[INFO] checking wasmer-wasi-experimental-io-devices-1.0.0-alpha4 against try#b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8 for pr-78363
[INFO] extracting crate wasmer-wasi-experimental-io-devices 1.0.0-alpha4 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate wasmer-wasi-experimental-io-devices 1.0.0-alpha4 on toolchain b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wasmer-wasi-experimental-io-devices 1.0.0-alpha4
[INFO] finished tweaking crates.io crate wasmer-wasi-experimental-io-devices 1.0.0-alpha4
[INFO] tweaked toml for crates.io crate wasmer-wasi-experimental-io-devices 1.0.0-alpha4 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded xkb v0.2.1
[INFO] [stderr]   Downloaded enumset v1.0.1
[INFO] [stderr]   Downloaded wayland-sys v0.25.0
[INFO] [stderr]   Downloaded orbclient v0.3.27
[INFO] [stderr]   Downloaded wayland-client v0.25.0
[INFO] [stderr]   Downloaded wayland-cursor v0.25.0
[INFO] [stderr]   Downloaded wasmer-engine v1.0.0-alpha4
[INFO] [stderr]   Downloaded wasmer-wasi v1.0.0-alpha4
[INFO] [stderr]   Downloaded wasmer-vm v1.0.0-alpha4
[INFO] [stderr]   Downloaded wayland-scanner v0.25.0
[INFO] [stderr]   Downloaded wayland-commons v0.25.0
[INFO] [stderr]   Downloaded minifb v0.16.0
[INFO] [stderr]   Downloaded ref_thread_local v0.0.0
[INFO] [stderr]   Downloaded enumset_derive v0.5.0
[INFO] [stderr]   Downloaded xkbcommon-sys v0.7.4
[INFO] [stderr]   Downloaded wayland-protocols v0.25.0
[INFO] [stderr]   Downloaded cranelift-entity v0.65.0
[INFO] [stderr]   Downloaded wasmer-compiler v1.0.0-alpha4
[INFO] [stderr]   Downloaded wasmer-types v1.0.0-alpha4
[INFO] [stderr]   Downloaded wasmer v1.0.0-alpha4
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "metadata" "--no-deps" "--format-version=1", 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] 5223fd26941143f1abdb2269c3876330a2fc8178a0925295101aa5f05535becf
[INFO] running `Command { std: "docker" "start" "-a" "5223fd26941143f1abdb2269c3876330a2fc8178a0925295101aa5f05535becf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5223fd26941143f1abdb2269c3876330a2fc8178a0925295101aa5f05535becf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5223fd26941143f1abdb2269c3876330a2fc8178a0925295101aa5f05535becf", kill_on_drop: false }`
[INFO] [stdout] 5223fd26941143f1abdb2269c3876330a2fc8178a0925295101aa5f05535becf
[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=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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7e1fa8c01dd41812eeee9ff6e465afac2dbbb3e8eb15d63f8ceed4813d350a7c
[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" "7e1fa8c01dd41812eeee9ff6e465afac2dbbb3e8eb15d63f8ceed4813d350a7c", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling xml-rs v0.8.3
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling target-lexicon v0.10.0
[INFO] [stderr]     Checking object v0.21.1
[INFO] [stderr]     Checking once_cell v1.4.1
[INFO] [stderr]    Compiling inventory v0.1.9
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]     Checking ref_thread_local v0.0.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling wasmer-vm v1.0.0-alpha4
[INFO] [stderr]    Compiling minifb v0.16.0
[INFO] [stderr]     Checking libloading v0.6.5
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking raw-window-handle v0.3.3
[INFO] [stderr]     Checking nix v0.17.0
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling ghost v0.1.2
[INFO] [stderr]    Compiling inventory-impl v0.1.9
[INFO] [stderr]    Compiling ctor v0.1.16
[INFO] [stderr]    Compiling typetag-impl v0.1.6
[INFO] [stderr]     Checking dlib v0.4.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking wayland-sys v0.25.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling wayland-scanner v0.25.0
[INFO] [stderr]    Compiling xkbcommon-sys v0.7.4
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking xkb v0.2.1
[INFO] [stderr]    Compiling wayland-client v0.25.0
[INFO] [stderr]    Compiling wayland-protocols v0.25.0
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]     Checking backtrace v0.3.53
[INFO] [stderr]     Checking wayland-commons v0.25.0
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling enumset_derive v0.5.0
[INFO] [stderr]     Checking cranelift-entity v0.65.0
[INFO] [stderr]     Checking indexmap v1.6.0
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking bincode v1.3.1
[INFO] [stderr]     Checking erased-serde v0.3.12
[INFO] [stderr]     Checking generational-arena v0.2.8
[INFO] [stderr]     Checking wasmer-types v1.0.0-alpha4
[INFO] [stderr]     Checking typetag v0.1.6
[INFO] [stderr]     Checking wayland-cursor v0.25.0
[INFO] [stderr]     Checking enumset v1.0.1
[INFO] [stderr]     Checking wasmer-compiler v1.0.0-alpha4
[INFO] [stderr]     Checking wasmer-engine v1.0.0-alpha4
[INFO] [stderr]     Checking wasmer v1.0.0-alpha4
[INFO] [stderr]     Checking wasmer-wasi v1.0.0-alpha4
[INFO] [stderr]     Checking wasmer-wasi-experimental-io-devices v1.0.0-alpha4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 21s
[INFO] running `Command { std: "docker" "inspect" "7e1fa8c01dd41812eeee9ff6e465afac2dbbb3e8eb15d63f8ceed4813d350a7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e1fa8c01dd41812eeee9ff6e465afac2dbbb3e8eb15d63f8ceed4813d350a7c", kill_on_drop: false }`
[INFO] [stdout] 7e1fa8c01dd41812eeee9ff6e465afac2dbbb3e8eb15d63f8ceed4813d350a7c