[INFO] cloning repository https://github.com/peterdelevoryas/r8
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/peterdelevoryas/r8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpeterdelevoryas%2Fr8"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpeterdelevoryas%2Fr8'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 86acd3eb55c646ac260ebe8af36376439e5c0cd0
[INFO] checking peterdelevoryas/r8 against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpeterdelevoryas%2Fr8" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/peterdelevoryas/r8 on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/peterdelevoryas/r8
[INFO] finished tweaking git repo https://github.com/peterdelevoryas/r8
[INFO] tweaked toml for git repo https://github.com/peterdelevoryas/r8 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/peterdelevoryas/r8 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 80e10b540e7405aa8fa1d3ffb10576f3d22088ea62c6caf85f921e64ae4e3d08
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "80e10b540e7405aa8fa1d3ffb10576f3d22088ea62c6caf85f921e64ae4e3d08"`
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling itoa v0.4.4
[INFO] [stderr]    Compiling cranelift-entity v0.43.0 (https://github.com/CraneStation/cranelift#de7354e0)
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]     Checking indexmap v1.2.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking cranelift-bforest v0.43.0 (https://github.com/CraneStation/cranelift#de7354e0)
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.43.0 (https://github.com/CraneStation/cranelift#de7354e0)
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling scroll v0.9.2
[INFO] [stderr]     Checking backtrace v0.3.37
[INFO] [stderr] error[E0606]: casting `f64` as `i32` is invalid
[INFO] [stderr]     --> /opt/rustwide/cargo-home/git/checkouts/cranelift-af8713b52459e6cd/de7354e/cranelift-codegen/meta/src/gen_encodings.rs:1095:27
[INFO] [stderr]      |
[INFO] [stderr] 1095 |                 let l2l = (level2.hash_table_len.unwrap() as f64).log2() as i32;
[INFO] [stderr]      |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0606]: casting `f64` as `usize` is invalid
[INFO] [stderr]   --> /opt/rustwide/cargo-home/git/checkouts/cranelift-af8713b52459e6cd/de7354e/cranelift-codegen/meta/src/constant_hash.rs:19:16
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let size = (1.20 * num_items as f64) as usize;
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0606`.
[INFO] [stderr] error: could not compile `cranelift-codegen-meta`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "80e10b540e7405aa8fa1d3ffb10576f3d22088ea62c6caf85f921e64ae4e3d08"`
[INFO] running `"docker" "rm" "-f" "80e10b540e7405aa8fa1d3ffb10576f3d22088ea62c6caf85f921e64ae4e3d08"`
[INFO] [stdout] 80e10b540e7405aa8fa1d3ffb10576f3d22088ea62c6caf85f921e64ae4e3d08