Dec 12 02:52:49.841 INFO checking FauxFaux/jsonarray2pg against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 02:52:49.841 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +3a75e80557a103497cffbcab395a2f37061a77ea-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 02:52:50.154 INFO [stdout] b53c03298db398080d2f654339b0954dd664bcca94abfca035f4e0b85fcd76df
Dec 12 02:52:50.160 INFO running `"docker" "start" "-a" "b53c03298db398080d2f654339b0954dd664bcca94abfca035f4e0b85fcd76df"`
Dec 12 02:52:51.577 INFO [stderr] usermod: no changes
Dec 12 02:52:51.688 INFO [stderr]     Checking postgres-protocol v0.2.1
Dec 12 02:52:52.940 INFO [stderr]     Checking postgres-shared v0.2.0
Dec 12 02:52:54.416 INFO [stderr]     Checking postgres v0.14.0
Dec 12 02:52:55.952 INFO [stderr]     Checking jsonarray2pg v0.1.0 (/source)
Dec 12 02:52:57.214 INFO [stderr] warning: variable does not need to be mutable
Dec 12 02:52:57.220 INFO [stderr]   --> src/json.rs:94:40
Dec 12 02:52:57.220 INFO [stderr]    |
Dec 12 02:52:57.220 INFO [stderr] 94 | fn read_string<T: Iterator<Item = u8>>(mut iter: &mut T,
Dec 12 02:52:57.220 INFO [stderr]    |                                        ----^^^^
Dec 12 02:52:57.220 INFO [stderr]    |                                        |
Dec 12 02:52:57.220 INFO [stderr]    |                                        help: remove this `mut`
Dec 12 02:52:57.220 INFO [stderr]    |
Dec 12 02:52:57.220 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 02:52:57.221 INFO [stderr] 
Dec 12 02:52:57.221 INFO [stderr] warning: variable does not need to be mutable
Dec 12 02:52:57.221 INFO [stderr]   --> src/json.rs:95:40
Dec 12 02:52:57.221 INFO [stderr]    |
Dec 12 02:52:57.221 INFO [stderr] 95 |                                        mut buf: &mut Vec<u8>)
Dec 12 02:52:57.221 INFO [stderr]    |                                        ----^^^
Dec 12 02:52:57.221 INFO [stderr]    |                                        |
Dec 12 02:52:57.221 INFO [stderr]    |                                        help: remove this `mut`
Dec 12 02:52:57.221 INFO [stderr] 
Dec 12 02:52:57.221 INFO [stderr] warning: variable does not need to be mutable
Dec 12 02:52:57.221 INFO [stderr]    --> src/json.rs:116:37
Dec 12 02:52:57.221 INFO [stderr]     |
Dec 12 02:52:57.221 INFO [stderr] 116 | fn read_num<T: Iterator<Item = u8>>(mut iter: &mut Peekable<T>,
Dec 12 02:52:57.221 INFO [stderr]     |                                     ----^^^^
Dec 12 02:52:57.221 INFO [stderr]     |                                     |
Dec 12 02:52:57.221 INFO [stderr]     |                                     help: remove this `mut`
Dec 12 02:52:57.221 INFO [stderr] 
Dec 12 02:52:57.221 INFO [stderr] warning: variable does not need to be mutable
Dec 12 02:52:57.221 INFO [stderr]    --> src/json.rs:117:37
Dec 12 02:52:57.221 INFO [stderr]     |
Dec 12 02:52:57.221 INFO [stderr] 117 |                                     mut buf: &mut Vec<u8>)
Dec 12 02:52:57.221 INFO [stderr]     |                                     ----^^^
Dec 12 02:52:57.221 INFO [stderr]     |                                     |
Dec 12 02:52:57.221 INFO [stderr]     |                                     help: remove this `mut`
Dec 12 02:52:57.221 INFO [stderr] 
Dec 12 02:52:57.221 INFO [stderr] warning: variable does not need to be mutable
Dec 12 02:52:57.221 INFO [stderr]    --> src/json.rs:160:46
Dec 12 02:52:57.221 INFO [stderr]     |
Dec 12 02:52:57.221 INFO [stderr] 160 | pub fn parse_array_from_file<T: io::Read, F>(mut from: &mut T,
Dec 12 02:52:57.221 INFO [stderr]     |                                              ----^^^^
Dec 12 02:52:57.221 INFO [stderr]     |                                              |
Dec 12 02:52:57.221 INFO [stderr]     |                                              help: remove this `mut`
Dec 12 02:52:57.221 INFO [stderr] 
Dec 12 02:52:57.486 INFO [stderr] warning: variable does not need to be mutable
Dec 12 02:52:57.486 INFO [stderr]   --> src/json.rs:94:40
Dec 12 02:52:57.486 INFO [stderr]    |
Dec 12 02:52:57.486 INFO [stderr] 94 | fn read_string<T: Iterator<Item = u8>>(mut iter: &mut T,
Dec 12 02:52:57.486 INFO [stderr]    |                                        ----^^^^
Dec 12 02:52:57.486 INFO [stderr]    |                                        |
Dec 12 02:52:57.486 INFO [stderr]    |                                        help: remove this `mut`
Dec 12 02:52:57.486 INFO [stderr]    |
Dec 12 02:52:57.486 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 02:52:57.486 INFO [stderr] 
Dec 12 02:52:57.486 INFO [stderr] warning: variable does not need to be mutable
Dec 12 02:52:57.486 INFO [stderr]   --> src/json.rs:95:40
Dec 12 02:52:57.486 INFO [stderr]    |
Dec 12 02:52:57.486 INFO [stderr] 95 |                                        mut buf: &mut Vec<u8>)
Dec 12 02:52:57.486 INFO [stderr]    |                                        ----^^^
Dec 12 02:52:57.486 INFO [stderr]    |                                        |
Dec 12 02:52:57.486 INFO [stderr]    |                                        help: remove this `mut`
Dec 12 02:52:57.486 INFO [stderr] 
Dec 12 02:52:57.496 INFO [stderr] warning: variable does not need to be mutable
Dec 12 02:52:57.496 INFO [stderr]    --> src/json.rs:116:37
Dec 12 02:52:57.496 INFO [stderr]     |
Dec 12 02:52:57.496 INFO [stderr] 116 | fn read_num<T: Iterator<Item = u8>>(mut iter: &mut Peekable<T>,
Dec 12 02:52:57.496 INFO [stderr]     |                                     ----^^^^
Dec 12 02:52:57.496 INFO [stderr]     |                                     |
Dec 12 02:52:57.496 INFO [stderr]     |                                     help: remove this `mut`
Dec 12 02:52:57.496 INFO [stderr] 
Dec 12 02:52:57.496 INFO [stderr] warning: variable does not need to be mutable
Dec 12 02:52:57.496 INFO [stderr]    --> src/json.rs:117:37
Dec 12 02:52:57.496 INFO [stderr]     |
Dec 12 02:52:57.496 INFO [stderr] 117 |                                     mut buf: &mut Vec<u8>)
Dec 12 02:52:57.496 INFO [stderr]     |                                     ----^^^
Dec 12 02:52:57.496 INFO [stderr]     |                                     |
Dec 12 02:52:57.496 INFO [stderr]     |                                     help: remove this `mut`
Dec 12 02:52:57.496 INFO [stderr] 
Dec 12 02:52:57.496 INFO [stderr] warning: variable does not need to be mutable
Dec 12 02:52:57.496 INFO [stderr]    --> src/json.rs:160:46
Dec 12 02:52:57.496 INFO [stderr]     |
Dec 12 02:52:57.496 INFO [stderr] 160 | pub fn parse_array_from_file<T: io::Read, F>(mut from: &mut T,
Dec 12 02:52:57.496 INFO [stderr]     |                                              ----^^^^
Dec 12 02:52:57.496 INFO [stderr]     |                                              |
Dec 12 02:52:57.496 INFO [stderr]     |                                              help: remove this `mut`
Dec 12 02:52:57.496 INFO [stderr] 
Dec 12 02:52:57.536 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.93s
Dec 12 02:52:57.541 INFO [stderr] su: No module specific data is present
Dec 12 02:52:58.118 INFO running `"docker" "inspect" "b53c03298db398080d2f654339b0954dd664bcca94abfca035f4e0b85fcd76df"`
Dec 12 02:52:58.253 INFO running `"docker" "rm" "-f" "b53c03298db398080d2f654339b0954dd664bcca94abfca035f4e0b85fcd76df"`
Dec 12 02:52:58.472 INFO [stdout] b53c03298db398080d2f654339b0954dd664bcca94abfca035f4e0b85fcd76df