[INFO] fetching crate swasm 0.31.3...
[INFO] checking swasm-0.31.3 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate swasm 0.31.3 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate swasm 0.31.3 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate swasm 0.31.3
[INFO] finished tweaking crates.io crate swasm 0.31.3
[INFO] tweaked toml for crates.io crate swasm 0.31.3 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f04ddaec1547af2d79689ac998c3a24052c11c2398bc14b1d1ae8de501f9e790
[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" "f04ddaec1547af2d79689ac998c3a24052c11c2398bc14b1d1ae8de501f9e790", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f04ddaec1547af2d79689ac998c3a24052c11c2398bc14b1d1ae8de501f9e790", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f04ddaec1547af2d79689ac998c3a24052c11c2398bc14b1d1ae8de501f9e790", kill_on_drop: false }`
[INFO] [stdout] f04ddaec1547af2d79689ac998c3a24052c11c2398bc14b1d1ae8de501f9e790
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f147291bf82e411f579ccaab5c6f18224e18adacc946160e427c7cf845835b7e
[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" "f147291bf82e411f579ccaab5c6f18224e18adacc946160e427c7cf845835b7e", kill_on_drop: false }`
[INFO] [stderr]     Checking swasm v0.31.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `BlockType` is imported redundantly
[INFO] [stdout]     --> src/elements/ops.rs:1128:7
[INFO] [stdout]      |
[INFO] [stdout] 7    |     Uint8, VarUint32, CountedList, BlockType,
[INFO] [stdout]      |                                    --------- the item `BlockType` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 1128 |         use super::BlockType;
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BlockType` is imported redundantly
[INFO] [stdout]     --> src/elements/ops.rs:1128:7
[INFO] [stdout]      |
[INFO] [stdout] 7    |     Uint8, VarUint32, CountedList, BlockType,
[INFO] [stdout]      |                                    --------- the item `BlockType` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 1128 |         use super::BlockType;
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.55s
[INFO] running `Command { std: "docker" "inspect" "f147291bf82e411f579ccaab5c6f18224e18adacc946160e427c7cf845835b7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f147291bf82e411f579ccaab5c6f18224e18adacc946160e427c7cf845835b7e", kill_on_drop: false }`
[INFO] [stdout] f147291bf82e411f579ccaab5c6f18224e18adacc946160e427c7cf845835b7e