[INFO] crate bxl 0.1.0 is already in cache
[INFO] extracting crate bxl 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/bxl/0.1.0
[INFO] extracting crate bxl 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/bxl/0.1.0
[INFO] validating manifest of bxl-0.1.0 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 bxl-0.1.0 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 bxl-0.1.0
[INFO] finished frobbing bxl-0.1.0
[INFO] frobbed toml for bxl-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/bxl/0.1.0/Cargo.toml
[INFO] started frobbing bxl-0.1.0
[INFO] finished frobbing bxl-0.1.0
[INFO] frobbed toml for bxl-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/bxl/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 bxl-0.1.0 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/bxl/0.1.0:/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=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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 43a8334fb5a3918377adb3085d34773b9d593fb845f120e1b1bee980914ea23e
[INFO] running `"docker" "start" "-a" "43a8334fb5a3918377adb3085d34773b9d593fb845f120e1b1bee980914ea23e"`
[INFO] [stderr]    Compiling bit_reverse v0.1.8
[INFO] [stderr]    Compiling bxl v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]    --> src/lib.rs:356:13
[INFO] [stderr]     |
[INFO] [stderr] 356 |         Err(err) => {
[INFO] [stderr]     |             ^^^ help: consider prefixing with an underscore: `_err`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `total_checks` is assigned to, but never used
[INFO] [stderr]    --> src/lib.rs:677:13
[INFO] [stderr]     |
[INFO] [stderr] 677 |     let mut total_checks = 0;
[INFO] [stderr]     |             ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: consider using `_total_checks` instead
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_node`
[INFO] [stderr]   --> src/lib.rs:37:1
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn print_node(tree: &NodeTree, node: &Node) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_dot`
[INFO] [stderr]   --> src/lib.rs:90:1
[INFO] [stderr]    |
[INFO] [stderr] 90 | fn print_dot(tree: &NodeTree) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `try_from`
[INFO] [stderr]    --> src/lib.rs:136:5
[INFO] [stderr]     |
[INFO] [stderr] 136 |     fn try_from(s: &str) -> Result<BitAddr, String> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_last_bit`
[INFO] [stderr]    --> src/lib.rs:174:5
[INFO] [stderr]     |
[INFO] [stderr] 174 |     fn get_last_bit(&self) -> Result<u8, &str> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_parent_of`
[INFO] [stderr]    --> src/lib.rs:220:5
[INFO] [stderr]     |
[INFO] [stderr] 220 |     fn is_parent_of(&self, other: BitAddr) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_left_child`
[INFO] [stderr]    --> src/lib.rs:248:5
[INFO] [stderr]     |
[INFO] [stderr] 248 |     fn is_left_child(&self) -> Result<bool, String> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.45s
[INFO] running `"docker" "inspect" "43a8334fb5a3918377adb3085d34773b9d593fb845f120e1b1bee980914ea23e"`
[INFO] running `"docker" "rm" "-f" "43a8334fb5a3918377adb3085d34773b9d593fb845f120e1b1bee980914ea23e"`
[INFO] [stdout] 43a8334fb5a3918377adb3085d34773b9d593fb845f120e1b1bee980914ea23e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/bxl/0.1.0:/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=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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] fdee02d72e32015b80cb629a6ca401e9d312089ee8a242be1ec1527591c3f0b7
[INFO] running `"docker" "start" "-a" "fdee02d72e32015b80cb629a6ca401e9d312089ee8a242be1ec1527591c3f0b7"`
[INFO] [stderr]    Compiling bxl v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]    --> src/lib.rs:356:13
[INFO] [stderr]     |
[INFO] [stderr] 356 |         Err(err) => {
[INFO] [stderr]     |             ^^^ help: consider prefixing with an underscore: `_err`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `total_checks` is assigned to, but never used
[INFO] [stderr]    --> src/lib.rs:677:13
[INFO] [stderr]     |
[INFO] [stderr] 677 |     let mut total_checks = 0;
[INFO] [stderr]     |             ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: consider using `_total_checks` instead
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_node`
[INFO] [stderr]   --> src/lib.rs:37:1
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn print_node(tree: &NodeTree, node: &Node) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_dot`
[INFO] [stderr]   --> src/lib.rs:90:1
[INFO] [stderr]    |
[INFO] [stderr] 90 | fn print_dot(tree: &NodeTree) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.19s
[INFO] running `"docker" "inspect" "fdee02d72e32015b80cb629a6ca401e9d312089ee8a242be1ec1527591c3f0b7"`
[INFO] running `"docker" "rm" "-f" "fdee02d72e32015b80cb629a6ca401e9d312089ee8a242be1ec1527591c3f0b7"`
[INFO] [stdout] fdee02d72e32015b80cb629a6ca401e9d312089ee8a242be1ec1527591c3f0b7
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/bxl/0.1.0:/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=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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] e21ff000aaaa668d1ccfc5ea5805d4776b3a88e377e35a702fcb331020094bf9
[INFO] running `"docker" "start" "-a" "e21ff000aaaa668d1ccfc5ea5805d4776b3a88e377e35a702fcb331020094bf9"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/bxl-e40422e47e9ff139
[INFO] [stdout] running 16 tests
[INFO] [stdout] test tests::bitaddr_get_sibling_addr ... ok
[INFO] [stdout] test tests::bitaddr_get_parent_addr ... ok
[INFO] [stdout] test tests::bitaddr_get_last_bit ... ok
[INFO] [stdout] test tests::bitaddr_from_string ... ok
[INFO] [stdout] test tests::bitaddr_check_equivalence ... ok
[INFO] [stdout] test tests::bitaddr_is_left_child ... ok
[INFO] [stdout] test tests::bitaddr_is_parent_of ... ok
[INFO] [stdout] test tests::bitaddr_append_bit_err ... ok
[INFO] [stdout] test tests::get_bit_ok ... ok
[INFO] [stdout] test tests::bitaddr_append_bit ... ok
[INFO] [stdout] test tests::node_is_leaf ... ok
[INFO] [stdout] test tests::node_needs_swap_ok ... ok
[INFO] [stdout] test tests::node_increase_weight ... ok
[INFO] [stdout] test tests::bitaddr_is_ancestor_of ... ok
[INFO] [stdout] test tests::bitaddr_to_string ... ok
[INFO] [stderr]      Running /opt/crater/target/debug/deps/bxl2txt-5531f203d64c8c2f
[INFO] [stdout] test tests::bitaddr_prefix_swap ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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 bxl
[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" "e21ff000aaaa668d1ccfc5ea5805d4776b3a88e377e35a702fcb331020094bf9"`
[INFO] running `"docker" "rm" "-f" "e21ff000aaaa668d1ccfc5ea5805d4776b3a88e377e35a702fcb331020094bf9"`
[INFO] [stdout] e21ff000aaaa668d1ccfc5ea5805d4776b3a88e377e35a702fcb331020094bf9