[INFO] fetching crate rsys 0.5.5...
[INFO] testing rsys-0.5.5 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate rsys 0.5.5 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate rsys 0.5.5
[INFO] finished tweaking crates.io crate rsys 0.5.5
[INFO] tweaked toml for crates.io crate rsys 0.5.5 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rsys 0.5.5 on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rsys 0.5.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rsys_macro v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4bd4eaeb5ceb1c9c74b3c3f988603a12fab4ab5cbad5bd67a76a432edba45f28
[INFO] running `Command { std: "docker" "start" "-a" "4bd4eaeb5ceb1c9c74b3c3f988603a12fab4ab5cbad5bd67a76a432edba45f28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4bd4eaeb5ceb1c9c74b3c3f988603a12fab4ab5cbad5bd67a76a432edba45f28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bd4eaeb5ceb1c9c74b3c3f988603a12fab4ab5cbad5bd67a76a432edba45f28", kill_on_drop: false }`
[INFO] [stdout] 4bd4eaeb5ceb1c9c74b3c3f988603a12fab4ab5cbad5bd67a76a432edba45f28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 61cb2c1c8da85524d93ad8b86ed289175c12b745bb4f6b7c9d00bbb722a27ae5
[INFO] running `Command { std: "docker" "start" "-a" "61cb2c1c8da85524d93ad8b86ed289175c12b745bb4f6b7c9d00bbb722a27ae5", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]    Compiling libc v0.2.78
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling rsys_macro v0.1.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]    Compiling thiserror v1.0.20
[INFO] [stderr]    Compiling rsys v0.5.5 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/os/linux/storage/system.rs:52:31
[INFO] [stdout]     |
[INFO] [stdout] 52  |     unsafe { ioctl(fileno(f), BLKBSZGET, &mut size) };
[INFO] [stdout]     |              -----            ^^^^^^^^^ expected `i32`, found `u64`
[INFO] [stdout]     |              |
[INFO] [stdout]     |              arguments to this function are incorrect
[INFO] [stdout]     |
[INFO] [stdout] note: function defined here
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/libc-0.2.78/src/unix/linux_like/linux/musl/b64/x86_64/mod.rs:975:12
[INFO] [stdout]     |
[INFO] [stdout] 975 |     pub fn ioctl(fd: ::c_int, request: ::c_int, ...) -> ::c_int;
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] help: you can convert a `u64` to an `i32` and panic if the converted value doesn't fit
[INFO] [stdout]     |
[INFO] [stdout] 52  |     unsafe { ioctl(fileno(f), BLKBSZGET.try_into().unwrap(), &mut size) };
[INFO] [stdout]     |                                        ++++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rsys` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "61cb2c1c8da85524d93ad8b86ed289175c12b745bb4f6b7c9d00bbb722a27ae5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61cb2c1c8da85524d93ad8b86ed289175c12b745bb4f6b7c9d00bbb722a27ae5", kill_on_drop: false }`
[INFO] [stdout] 61cb2c1c8da85524d93ad8b86ed289175c12b745bb4f6b7c9d00bbb722a27ae5