[INFO] updating cached repository kenpratt/jvm-assembler
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kenpratt/jvm-assembler
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kenpratt/jvm-assembler" "work/ex/beta-1.37-6/sources/1.36.0/gh/kenpratt/jvm-assembler"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/kenpratt/jvm-assembler'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kenpratt/jvm-assembler" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kenpratt/jvm-assembler"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kenpratt/jvm-assembler'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 13c90ce76d099b743656568e1c46ad8204c68e63
[INFO] sha for GitHub repo kenpratt/jvm-assembler: 13c90ce76d099b743656568e1c46ad8204c68e63
[INFO] validating manifest of kenpratt/jvm-assembler on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of kenpratt/jvm-assembler on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing kenpratt/jvm-assembler
[INFO] finished frobbing kenpratt/jvm-assembler
[INFO] frobbed toml for kenpratt/jvm-assembler written to work/ex/beta-1.37-6/sources/1.36.0/gh/kenpratt/jvm-assembler/Cargo.toml
[INFO] started frobbing kenpratt/jvm-assembler
[INFO] finished frobbing kenpratt/jvm-assembler
[INFO] frobbed toml for kenpratt/jvm-assembler written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kenpratt/jvm-assembler/Cargo.toml
[INFO] crate kenpratt/jvm-assembler already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing kenpratt/jvm-assembler against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/kenpratt/jvm-assembler:/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=warn" "-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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] fb286fa5c7cbfa5774f5bcaee8b383a4a5ff7e6898e7bfca181c4c9cf514a62d
[INFO] running `"docker" "start" "-a" "fb286fa5c7cbfa5774f5bcaee8b383a4a5ff7e6898e7bfca181c4c9cf514a62d"`
[INFO] [stderr]    Compiling jvm-assembler v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/serialization.rs:21:13
[INFO] [stderr]    |
[INFO] [stderr] 21 |         let mut buf = &mut Deserializer::new(Box::new(stream.bytes().map(|r| r.unwrap())));
[INFO] [stderr]    |             ----^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/serialization.rs:279:13
[INFO] [stderr]     |
[INFO] [stderr] 279 |         let mut code_buf = &mut Deserializer::new(Box::new(code.into_iter()));
[INFO] [stderr]     |             ----^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/serialization.rs:377:13
[INFO] [stderr]     |
[INFO] [stderr] 377 |         let mut attribute_name_index;
[INFO] [stderr]     |             ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/serialization.rs:380:17
[INFO] [stderr]     |
[INFO] [stderr] 380 |             let mut body_buf = &mut attribute_body;
[INFO] [stderr]     |                 ----^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/serialization.rs:416:13
[INFO] [stderr]     |
[INFO] [stderr] 416 |         let mut buf2 = &mut Deserializer::new(Box::new(attribute_body.into_iter()));
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.46s
[INFO] running `"docker" "inspect" "fb286fa5c7cbfa5774f5bcaee8b383a4a5ff7e6898e7bfca181c4c9cf514a62d"`
[INFO] running `"docker" "rm" "-f" "fb286fa5c7cbfa5774f5bcaee8b383a4a5ff7e6898e7bfca181c4c9cf514a62d"`
[INFO] [stdout] fb286fa5c7cbfa5774f5bcaee8b383a4a5ff7e6898e7bfca181c4c9cf514a62d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/kenpratt/jvm-assembler:/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=warn" "-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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] befd5f57f55290bdebd5aa84ab76b7c7bf002c14626c244ad1c9c9541ca7d66f
[INFO] running `"docker" "start" "-a" "befd5f57f55290bdebd5aa84ab76b7c7bf002c14626c244ad1c9c9541ca7d66f"`
[INFO] [stderr]    Compiling jvm-assembler v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/serialization.rs:21:13
[INFO] [stderr]    |
[INFO] [stderr] 21 |         let mut buf = &mut Deserializer::new(Box::new(stream.bytes().map(|r| r.unwrap())));
[INFO] [stderr]    |             ----^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/serialization.rs:279:13
[INFO] [stderr]     |
[INFO] [stderr] 279 |         let mut code_buf = &mut Deserializer::new(Box::new(code.into_iter()));
[INFO] [stderr]     |             ----^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/serialization.rs:377:13
[INFO] [stderr]     |
[INFO] [stderr] 377 |         let mut attribute_name_index;
[INFO] [stderr]     |             ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/serialization.rs:380:17
[INFO] [stderr]     |
[INFO] [stderr] 380 |             let mut body_buf = &mut attribute_body;
[INFO] [stderr]     |                 ----^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/serialization.rs:416:13
[INFO] [stderr]     |
[INFO] [stderr] 416 |         let mut buf2 = &mut Deserializer::new(Box::new(attribute_body.into_iter()));
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.00s
[INFO] running `"docker" "inspect" "befd5f57f55290bdebd5aa84ab76b7c7bf002c14626c244ad1c9c9541ca7d66f"`
[INFO] running `"docker" "rm" "-f" "befd5f57f55290bdebd5aa84ab76b7c7bf002c14626c244ad1c9c9541ca7d66f"`
[INFO] [stdout] befd5f57f55290bdebd5aa84ab76b7c7bf002c14626c244ad1c9c9541ca7d66f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/kenpratt/jvm-assembler:/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=warn" "-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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 6a27e9f56fa28eaf67167dbb0cbf53cadfcbfa6e99b37cd68a7702eac8f979c7
[INFO] running `"docker" "start" "-a" "6a27e9f56fa28eaf67167dbb0cbf53cadfcbfa6e99b37cd68a7702eac8f979c7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/jvm_assembler-aac62e7af76726ac
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/jvm_assembler-a67568227cb6071e
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests jvm-assembler
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "6a27e9f56fa28eaf67167dbb0cbf53cadfcbfa6e99b37cd68a7702eac8f979c7"`
[INFO] running `"docker" "rm" "-f" "6a27e9f56fa28eaf67167dbb0cbf53cadfcbfa6e99b37cd68a7702eac8f979c7"`
[INFO] [stdout] 6a27e9f56fa28eaf67167dbb0cbf53cadfcbfa6e99b37cd68a7702eac8f979c7