[INFO] crate rlua_serde 0.2.0 is already in cache
[INFO] extracting crate rlua_serde 0.2.0 into work/ex/clippy-test-run/sources/stable/reg/rlua_serde/0.2.0
[INFO] extracting crate rlua_serde 0.2.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/rlua_serde/0.2.0
[INFO] validating manifest of rlua_serde-0.2.0 on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rlua_serde-0.2.0 on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rlua_serde-0.2.0
[INFO] finished frobbing rlua_serde-0.2.0
[INFO] frobbed toml for rlua_serde-0.2.0 written to work/ex/clippy-test-run/sources/stable/reg/rlua_serde/0.2.0/Cargo.toml
[INFO] started frobbing rlua_serde-0.2.0
[INFO] finished frobbing rlua_serde-0.2.0
[INFO] frobbed toml for rlua_serde-0.2.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/rlua_serde/0.2.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting rlua_serde-0.2.0 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-5/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/rlua_serde/0.2.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a302a60c2a14c8a2cfba2c075949e1929aea99795aa6418fe8451bf824f149f5
[INFO] running `"docker" "start" "-a" "a302a60c2a14c8a2cfba2c075949e1929aea99795aa6418fe8451bf824f149f5"`
[INFO] [stderr]    Compiling rlua v0.15.3
[INFO] [stderr]     Checking rlua_serde v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: casting i8 to i64 may become silently lossy if types change
[INFO] [stderr]   --> src/ser.rs:32:28
[INFO] [stderr]    |
[INFO] [stderr] 32 |         self.serialize_i64(value as i64)
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i16 to i64 may become silently lossy if types change
[INFO] [stderr]   --> src/ser.rs:37:28
[INFO] [stderr]    |
[INFO] [stderr] 37 |         self.serialize_i64(value as i64)
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to i64 may become silently lossy if types change
[INFO] [stderr]   --> src/ser.rs:42:28
[INFO] [stderr]    |
[INFO] [stderr] 42 |         self.serialize_i64(value as i64)
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i64 may become silently lossy if types change
[INFO] [stderr]   --> src/ser.rs:52:28
[INFO] [stderr]    |
[INFO] [stderr] 52 |         self.serialize_i64(value as i64)
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to i64 may become silently lossy if types change
[INFO] [stderr]   --> src/ser.rs:57:28
[INFO] [stderr]    |
[INFO] [stderr] 57 |         self.serialize_i64(value as i64)
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to i64 may become silently lossy if types change
[INFO] [stderr]   --> src/ser.rs:62:28
[INFO] [stderr]    |
[INFO] [stderr] 62 |         self.serialize_i64(value as i64)
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting f32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/ser.rs:72:28
[INFO] [stderr]    |
[INFO] [stderr] 72 |         self.serialize_f64(value as f64)
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try: `f64::from(value)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i8 to i64 may become silently lossy if types change
[INFO] [stderr]   --> src/ser.rs:32:28
[INFO] [stderr]    |
[INFO] [stderr] 32 |         self.serialize_i64(value as i64)
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i16 to i64 may become silently lossy if types change
[INFO] [stderr]   --> src/ser.rs:37:28
[INFO] [stderr]    |
[INFO] [stderr] 37 |         self.serialize_i64(value as i64)
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to i64 may become silently lossy if types change
[INFO] [stderr]   --> src/ser.rs:42:28
[INFO] [stderr]    |
[INFO] [stderr] 42 |         self.serialize_i64(value as i64)
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i64 may become silently lossy if types change
[INFO] [stderr]   --> src/ser.rs:52:28
[INFO] [stderr]    |
[INFO] [stderr] 52 |         self.serialize_i64(value as i64)
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to i64 may become silently lossy if types change
[INFO] [stderr]   --> src/ser.rs:57:28
[INFO] [stderr]    |
[INFO] [stderr] 57 |         self.serialize_i64(value as i64)
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to i64 may become silently lossy if types change
[INFO] [stderr]   --> src/ser.rs:62:28
[INFO] [stderr]    |
[INFO] [stderr] 62 |         self.serialize_i64(value as i64)
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try: `i64::from(value)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting f32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/ser.rs:72:28
[INFO] [stderr]    |
[INFO] [stderr] 72 |         self.serialize_f64(value as f64)
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: try: `f64::from(value)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.93s
[INFO] running `"docker" "inspect" "a302a60c2a14c8a2cfba2c075949e1929aea99795aa6418fe8451bf824f149f5"`
[INFO] running `"docker" "rm" "-f" "a302a60c2a14c8a2cfba2c075949e1929aea99795aa6418fe8451bf824f149f5"`
[INFO] [stdout] a302a60c2a14c8a2cfba2c075949e1929aea99795aa6418fe8451bf824f149f5