[INFO] crate rstd 0.3.0 is already in cache
[INFO] checking rstd-0.3.0 against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] extracting crate rstd 0.3.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate rstd 0.3.0 on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate rstd 0.3.0
[INFO] finished tweaking crates.io crate rstd 0.3.0
[INFO] tweaked toml for crates.io crate rstd 0.3.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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-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" "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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d3fc251a75aeb7b96d4e8a765e7cef045af9d3d7519db655ad367eee6ace5de1
[INFO] running `"docker" "start" "-a" "d3fc251a75aeb7b96d4e8a765e7cef045af9d3d7519db655ad367eee6ace5de1"`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking rustyline v1.0.0
[INFO] [stderr]     Checking promptly v0.1.5
[INFO] [stderr]     Checking rstd v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0606]: casting `f64` as `i8` is invalid
[INFO] [stderr]   --> src/math.rs:27:51
[INFO] [stderr]    |
[INFO] [stderr] 27 | impl SquareRoot for i8  { fn sq_rt(self) -> i8  { (self as f64).sqrt() as i8  } }
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0606]: casting `f64` as `i16` is invalid
[INFO] [stderr]   --> src/math.rs:28:51
[INFO] [stderr]    |
[INFO] [stderr] 28 | impl SquareRoot for i16 { fn sq_rt(self) -> i16 { (self as f64).sqrt() as i16 } }
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0606]: casting `f64` as `i32` is invalid
[INFO] [stderr]   --> src/math.rs:29:51
[INFO] [stderr]    |
[INFO] [stderr] 29 | impl SquareRoot for i32 { fn sq_rt(self) -> i32 { (self as f64).sqrt() as i32 } }
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0606]: casting `f64` as `i64` is invalid
[INFO] [stderr]   --> src/math.rs:30:51
[INFO] [stderr]    |
[INFO] [stderr] 30 | impl SquareRoot for i64 { fn sq_rt(self) -> i64 { (self as f64).sqrt() as i64 } }
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0606]: casting `f64` as `u8` is invalid
[INFO] [stderr]   --> src/math.rs:33:51
[INFO] [stderr]    |
[INFO] [stderr] 33 | impl SquareRoot for u8  { fn sq_rt(self) -> u8  { (self as f64).sqrt() as u8  } }
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0606]: casting `f64` as `u16` is invalid
[INFO] [stderr]   --> src/math.rs:34:51
[INFO] [stderr]    |
[INFO] [stderr] 34 | impl SquareRoot for u16 { fn sq_rt(self) -> u16 { (self as f64).sqrt() as u16 } }
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0606]: casting `f64` as `u32` is invalid
[INFO] [stderr]   --> src/math.rs:35:51
[INFO] [stderr]    |
[INFO] [stderr] 35 | impl SquareRoot for u32 { fn sq_rt(self) -> u32 { (self as f64).sqrt() as u32 } }
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0606]: casting `f64` as `u64` is invalid
[INFO] [stderr]   --> src/math.rs:36:51
[INFO] [stderr]    |
[INFO] [stderr] 36 | impl SquareRoot for u64 { fn sq_rt(self) -> u64 { (self as f64).sqrt() as u64 } }
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 8 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0606`.
[INFO] [stderr] error: could not compile `rstd`.
[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[E0606]: casting `f64` as `i8` is invalid
[INFO] [stderr]   --> src/math.rs:27:51
[INFO] [stderr]    |
[INFO] [stderr] 27 | impl SquareRoot for i8  { fn sq_rt(self) -> i8  { (self as f64).sqrt() as i8  } }
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0606]: casting `f64` as `i16` is invalid
[INFO] [stderr]   --> src/math.rs:28:51
[INFO] [stderr]    |
[INFO] [stderr] 28 | impl SquareRoot for i16 { fn sq_rt(self) -> i16 { (self as f64).sqrt() as i16 } }
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0606]: casting `f64` as `i32` is invalid
[INFO] [stderr]   --> src/math.rs:29:51
[INFO] [stderr]    |
[INFO] [stderr] 29 | impl SquareRoot for i32 { fn sq_rt(self) -> i32 { (self as f64).sqrt() as i32 } }
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0606]: casting `f64` as `i64` is invalid
[INFO] [stderr]   --> src/math.rs:30:51
[INFO] [stderr]    |
[INFO] [stderr] 30 | impl SquareRoot for i64 { fn sq_rt(self) -> i64 { (self as f64).sqrt() as i64 } }
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0606]: casting `f64` as `u8` is invalid
[INFO] [stderr]   --> src/math.rs:33:51
[INFO] [stderr]    |
[INFO] [stderr] 33 | impl SquareRoot for u8  { fn sq_rt(self) -> u8  { (self as f64).sqrt() as u8  } }
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0606]: casting `f64` as `u16` is invalid
[INFO] [stderr]   --> src/math.rs:34:51
[INFO] [stderr]    |
[INFO] [stderr] 34 | impl SquareRoot for u16 { fn sq_rt(self) -> u16 { (self as f64).sqrt() as u16 } }
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0606]: casting `f64` as `u32` is invalid
[INFO] [stderr]   --> src/math.rs:35:51
[INFO] [stderr]    |
[INFO] [stderr] 35 | impl SquareRoot for u32 { fn sq_rt(self) -> u32 { (self as f64).sqrt() as u32 } }
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0606]: casting `f64` as `u64` is invalid
[INFO] [stderr]   --> src/math.rs:36:51
[INFO] [stderr]    |
[INFO] [stderr] 36 | impl SquareRoot for u64 { fn sq_rt(self) -> u64 { (self as f64).sqrt() as u64 } }
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 8 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0606`.
[INFO] [stderr] error: could not compile `rstd`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "d3fc251a75aeb7b96d4e8a765e7cef045af9d3d7519db655ad367eee6ace5de1"`
[INFO] running `"docker" "rm" "-f" "d3fc251a75aeb7b96d4e8a765e7cef045af9d3d7519db655ad367eee6ace5de1"`
[INFO] [stdout] d3fc251a75aeb7b96d4e8a765e7cef045af9d3d7519db655ad367eee6ace5de1