[INFO] fetching crate rust-wasm-prelude 0.3.0...
[INFO] checking rust-wasm-prelude-0.3.0 against try#ffa4a0215752773248fb0f0a8092f1c3e7907e9e for pr-75585
[INFO] extracting crate rust-wasm-prelude 0.3.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate rust-wasm-prelude 0.3.0 on toolchain ffa4a0215752773248fb0f0a8092f1c3e7907e9e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rust-wasm-prelude 0.3.0
[INFO] finished tweaking crates.io crate rust-wasm-prelude 0.3.0
[INFO] tweaked toml for crates.io crate rust-wasm-prelude 0.3.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "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] 4f87a2183858e61c69a38ac908f2cfb5b24b884c1a4ed396bedefd10f1e27c8b
[INFO] running `Command { std: "docker" "start" "-a" "4f87a2183858e61c69a38ac908f2cfb5b24b884c1a4ed396bedefd10f1e27c8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f87a2183858e61c69a38ac908f2cfb5b24b884c1a4ed396bedefd10f1e27c8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f87a2183858e61c69a38ac908f2cfb5b24b884c1a4ed396bedefd10f1e27c8b", kill_on_drop: false }`
[INFO] [stdout] 4f87a2183858e61c69a38ac908f2cfb5b24b884c1a4ed396bedefd10f1e27c8b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c08cc1d54e2f59e6002ccd210255105e6ff1141ffeb5d39de45a3bf6f8942bb6
[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" "c08cc1d54e2f59e6002ccd210255105e6ff1141ffeb5d39de45a3bf6f8942bb6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking memalloc v0.1.0
[INFO] [stderr]     Checking rust-wasm-prelude v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `Command { std: "docker" "inspect" "c08cc1d54e2f59e6002ccd210255105e6ff1141ffeb5d39de45a3bf6f8942bb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c08cc1d54e2f59e6002ccd210255105e6ff1141ffeb5d39de45a3bf6f8942bb6", kill_on_drop: false }`
[INFO] [stdout] c08cc1d54e2f59e6002ccd210255105e6ff1141ffeb5d39de45a3bf6f8942bb6