[INFO] updating cached repository msvisser/ArithmeticCoding
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/msvisser/ArithmeticCoding
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/msvisser/ArithmeticCoding" "work/ex/beta-1.38-1/sources/1.37.0/gh/msvisser/ArithmeticCoding"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/msvisser/ArithmeticCoding'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/msvisser/ArithmeticCoding" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/msvisser/ArithmeticCoding"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/msvisser/ArithmeticCoding'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c0c91a3baf21f232c4edef0efe5c02a6c3f28394
[INFO] sha for GitHub repo msvisser/ArithmeticCoding: c0c91a3baf21f232c4edef0efe5c02a6c3f28394
[INFO] validating manifest of msvisser/ArithmeticCoding on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of msvisser/ArithmeticCoding on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing msvisser/ArithmeticCoding
[INFO] finished frobbing msvisser/ArithmeticCoding
[INFO] frobbed toml for msvisser/ArithmeticCoding written to work/ex/beta-1.38-1/sources/1.37.0/gh/msvisser/ArithmeticCoding/Cargo.toml
[INFO] started frobbing msvisser/ArithmeticCoding
[INFO] finished frobbing msvisser/ArithmeticCoding
[INFO] frobbed toml for msvisser/ArithmeticCoding written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/msvisser/ArithmeticCoding/Cargo.toml
[INFO] crate msvisser/ArithmeticCoding already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing msvisser/ArithmeticCoding against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/msvisser/ArithmeticCoding:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 5a7b512c8795132ac572db3249daed4f8d3a3d516f3800a2060b786b7277e7f0
[INFO] running `"docker" "start" "-a" "5a7b512c8795132ac572db3249daed4f8d3a3d516f3800a2060b786b7277e7f0"`
[INFO] [stderr]    Compiling arithmetic_coding v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/coding/encode.rs:9:22
[INFO] [stderr]   |
[INFO] [stderr] 9 |     probability: Box<Probability>,
[INFO] [stderr]   |                      ^^^^^^^^^^^ help: use `dyn`: `dyn Probability`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/coding/encode.rs:16:42
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn new(iter: I, probability: Box<Probability>) -> Self {
[INFO] [stderr]    |                                          ^^^^^^^^^^^ help: use `dyn`: `dyn Probability`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/coding/decode.rs:8:22
[INFO] [stderr]   |
[INFO] [stderr] 8 |     probability: Box<Probability>,
[INFO] [stderr]   |                      ^^^^^^^^^^^ help: use `dyn`: `dyn Probability`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/coding/decode.rs:15:42
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn new(iter: I, probability: Box<Probability>) -> Self {
[INFO] [stderr]    |                                          ^^^^^^^^^^^ help: use `dyn`: `dyn Probability`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/coding/range.rs:17:66
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn select_symbol(&mut self, symbol: usize, probability: &Probability) -> Self {
[INFO] [stderr]    |                                                                  ^^^^^^^^^^^ help: use `dyn`: `dyn Probability`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:42:30
[INFO] [stderr]    |
[INFO] [stderr] 42 |         let probability: Box<Probability> = if matches.is_present("first-order") {
[INFO] [stderr]    |                              ^^^^^^^^^^^ help: use `dyn`: `dyn Probability`
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `cumulative` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/coding/probability/zero_order.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 17 |             let previous_cumulative = cumulative.get(symbol).unwrap_or(&0);
[INFO] [stderr]    |                                       ---------- immutable borrow occurs here
[INFO] [stderr] 18 |             let previous_probability = probabilities.get(symbol).unwrap_or(&0);
[INFO] [stderr] 19 |             cumulative.push(previous_probability + previous_cumulative);
[INFO] [stderr]    |             ^^^^^^^^^^ mutable borrow occurs here  ------------------- immutable borrow later used here
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.09s
[INFO] running `"docker" "inspect" "5a7b512c8795132ac572db3249daed4f8d3a3d516f3800a2060b786b7277e7f0"`
[INFO] running `"docker" "rm" "-f" "5a7b512c8795132ac572db3249daed4f8d3a3d516f3800a2060b786b7277e7f0"`
[INFO] [stdout] 5a7b512c8795132ac572db3249daed4f8d3a3d516f3800a2060b786b7277e7f0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/msvisser/ArithmeticCoding:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 1b47a67b4ebdc9492103615803b694bea986920f913c654a5335ec47138fc19d
[INFO] running `"docker" "start" "-a" "1b47a67b4ebdc9492103615803b694bea986920f913c654a5335ec47138fc19d"`
[INFO] [stderr]    Compiling arithmetic_coding v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/coding/encode.rs:9:22
[INFO] [stderr]   |
[INFO] [stderr] 9 |     probability: Box<Probability>,
[INFO] [stderr]   |                      ^^^^^^^^^^^ help: use `dyn`: `dyn Probability`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/coding/encode.rs:16:42
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn new(iter: I, probability: Box<Probability>) -> Self {
[INFO] [stderr]    |                                          ^^^^^^^^^^^ help: use `dyn`: `dyn Probability`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/coding/decode.rs:8:22
[INFO] [stderr]   |
[INFO] [stderr] 8 |     probability: Box<Probability>,
[INFO] [stderr]   |                      ^^^^^^^^^^^ help: use `dyn`: `dyn Probability`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/coding/decode.rs:15:42
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn new(iter: I, probability: Box<Probability>) -> Self {
[INFO] [stderr]    |                                          ^^^^^^^^^^^ help: use `dyn`: `dyn Probability`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/coding/range.rs:17:66
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn select_symbol(&mut self, symbol: usize, probability: &Probability) -> Self {
[INFO] [stderr]    |                                                                  ^^^^^^^^^^^ help: use `dyn`: `dyn Probability`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:42:30
[INFO] [stderr]    |
[INFO] [stderr] 42 |         let probability: Box<Probability> = if matches.is_present("first-order") {
[INFO] [stderr]    |                              ^^^^^^^^^^^ help: use `dyn`: `dyn Probability`
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `cumulative` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/coding/probability/zero_order.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 17 |             let previous_cumulative = cumulative.get(symbol).unwrap_or(&0);
[INFO] [stderr]    |                                       ---------- immutable borrow occurs here
[INFO] [stderr] 18 |             let previous_probability = probabilities.get(symbol).unwrap_or(&0);
[INFO] [stderr] 19 |             cumulative.push(previous_probability + previous_cumulative);
[INFO] [stderr]    |             ^^^^^^^^^^ mutable borrow occurs here  ------------------- immutable borrow later used here
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `"docker" "inspect" "1b47a67b4ebdc9492103615803b694bea986920f913c654a5335ec47138fc19d"`
[INFO] running `"docker" "rm" "-f" "1b47a67b4ebdc9492103615803b694bea986920f913c654a5335ec47138fc19d"`
[INFO] [stdout] 1b47a67b4ebdc9492103615803b694bea986920f913c654a5335ec47138fc19d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/msvisser/ArithmeticCoding:/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 855dcc0ce17018c031ff8962b896fed426872f7cea4ffd209abb51d105f2f2de
[INFO] running `"docker" "start" "-a" "855dcc0ce17018c031ff8962b896fed426872f7cea4ffd209abb51d105f2f2de"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/arithmetic_coding-d2bf6789f90ea9e1
[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" "855dcc0ce17018c031ff8962b896fed426872f7cea4ffd209abb51d105f2f2de"`
[INFO] running `"docker" "rm" "-f" "855dcc0ce17018c031ff8962b896fed426872f7cea4ffd209abb51d105f2f2de"`
[INFO] [stdout] 855dcc0ce17018c031ff8962b896fed426872f7cea4ffd209abb51d105f2f2de