[INFO] fetching crate range-split 0.2.0...
[INFO] checking range-split-0.2.0 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate range-split 0.2.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate range-split 0.2.0 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 range-split 0.2.0
[INFO] finished tweaking crates.io crate range-split 0.2.0
[INFO] tweaked toml for crates.io crate range-split 0.2.0 written to /workspace/builds/worker-12/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] c1b0653f20e898112db7e01e3181b44350580e6d1b16c48fb74a386e9fe2ebef
[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" "c1b0653f20e898112db7e01e3181b44350580e6d1b16c48fb74a386e9fe2ebef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c1b0653f20e898112db7e01e3181b44350580e6d1b16c48fb74a386e9fe2ebef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1b0653f20e898112db7e01e3181b44350580e6d1b16c48fb74a386e9fe2ebef", kill_on_drop: false }`
[INFO] [stdout] c1b0653f20e898112db7e01e3181b44350580e6d1b16c48fb74a386e9fe2ebef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] ff80801aa605b9878a968f30b12415ba528f184a9a54cc23c6946360a2f9c762
[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" "ff80801aa605b9878a968f30b12415ba528f184a9a54cc23c6946360a2f9c762", kill_on_drop: false }`
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking range-split v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: attribute should be applied to a function
[INFO] [stdout]    --> src/str.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 112 |         #[cold]
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout] 113 |         Err(OutOfBuffer)
[INFO] [stdout]     |         ---------------- not a function
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: attribute should be applied to a function
[INFO] [stdout]    --> src/str.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 112 |         #[cold]
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout] 113 |         Err(OutOfBuffer)
[INFO] [stdout]     |         ---------------- not a function
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `bytes::Bytes::split_off` that must be used
[INFO] [stdout]   --> src/bytes.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |             self.split_off(range.start);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: consider Bytes::truncate if you don't need the other half
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `bytes::Bytes::split_off` that must be used
[INFO] [stdout]   --> src/bytes.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |             self.split_off(range.start);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: consider Bytes::truncate if you don't need the other half
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.70s
[INFO] running `Command { std: "docker" "inspect" "ff80801aa605b9878a968f30b12415ba528f184a9a54cc23c6946360a2f9c762", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff80801aa605b9878a968f30b12415ba528f184a9a54cc23c6946360a2f9c762", kill_on_drop: false }`
[INFO] [stdout] ff80801aa605b9878a968f30b12415ba528f184a9a54cc23c6946360a2f9c762