[INFO] crate sfink_callgraph_traversal 0.1.0 is already in cache
[INFO] extracting crate sfink_callgraph_traversal 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/sfink_callgraph_traversal/0.1.0
[INFO] extracting crate sfink_callgraph_traversal 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/sfink_callgraph_traversal/0.1.0
[INFO] validating manifest of sfink_callgraph_traversal-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 sfink_callgraph_traversal-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 sfink_callgraph_traversal-0.1.0
[INFO] finished frobbing sfink_callgraph_traversal-0.1.0
[INFO] frobbed toml for sfink_callgraph_traversal-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/sfink_callgraph_traversal/0.1.0/Cargo.toml
[INFO] started frobbing sfink_callgraph_traversal-0.1.0
[INFO] finished frobbing sfink_callgraph_traversal-0.1.0
[INFO] frobbed toml for sfink_callgraph_traversal-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/sfink_callgraph_traversal/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 sfink_callgraph_traversal-0.1.0 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-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/sfink_callgraph_traversal/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] b5a813e023ec8b478db618bf9303cd67e9c66f92c6c3929598f2b0a8bed6342b
[INFO] running `"docker" "start" "-a" "b5a813e023ec8b478db618bf9303cd67e9c66f92c6c3929598f2b0a8bed6342b"`
[INFO] [stderr]    Compiling cpython v0.1.0
[INFO] [stderr]    Compiling rustyline v4.1.0
[INFO] [stderr]    Compiling python27-sys v0.1.2
[INFO] [stderr]    Compiling sfink_callgraph_traversal v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: enum is never used: `DescriptionBrevity`
[INFO] [stderr]   --> src/callgraph.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub enum DescriptionBrevity {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Matcher`
[INFO] [stderr]   --> src/callgraph.rs:45:1
[INFO] [stderr]    |
[INFO] [stderr] 45 | pub enum Matcher<'a> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/callgraph.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     pub fn new(pattern : &str) -> Option<Matcher> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_match`
[INFO] [stderr]   --> src/callgraph.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     pub fn is_match(&self, cg : &Callgraph, idx : NodeIndex) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `name`
[INFO] [stderr]    --> src/callgraph.rs:124:5
[INFO] [stderr]     |
[INFO] [stderr] 124 |     pub fn name(&self, idx : NodeIndex, brevity : DescriptionBrevity) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.50s
[INFO] running `"docker" "inspect" "b5a813e023ec8b478db618bf9303cd67e9c66f92c6c3929598f2b0a8bed6342b"`
[INFO] running `"docker" "rm" "-f" "b5a813e023ec8b478db618bf9303cd67e9c66f92c6c3929598f2b0a8bed6342b"`
[INFO] [stdout] b5a813e023ec8b478db618bf9303cd67e9c66f92c6c3929598f2b0a8bed6342b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/sfink_callgraph_traversal/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 520e21d575e42b38b916b55409365baca37d60266508a238cc43dc621fb59415
[INFO] running `"docker" "start" "-a" "520e21d575e42b38b916b55409365baca37d60266508a238cc43dc621fb59415"`
[INFO] [stderr]    Compiling sfink_callgraph_traversal v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: enum is never used: `DescriptionBrevity`
[INFO] [stderr]   --> src/callgraph.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub enum DescriptionBrevity {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Matcher`
[INFO] [stderr]   --> src/callgraph.rs:45:1
[INFO] [stderr]    |
[INFO] [stderr] 45 | pub enum Matcher<'a> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/callgraph.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     pub fn new(pattern : &str) -> Option<Matcher> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_match`
[INFO] [stderr]   --> src/callgraph.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     pub fn is_match(&self, cg : &Callgraph, idx : NodeIndex) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `name`
[INFO] [stderr]    --> src/callgraph.rs:124:5
[INFO] [stderr]     |
[INFO] [stderr] 124 |     pub fn name(&self, idx : NodeIndex, brevity : DescriptionBrevity) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.92s
[INFO] running `"docker" "inspect" "520e21d575e42b38b916b55409365baca37d60266508a238cc43dc621fb59415"`
[INFO] running `"docker" "rm" "-f" "520e21d575e42b38b916b55409365baca37d60266508a238cc43dc621fb59415"`
[INFO] [stdout] 520e21d575e42b38b916b55409365baca37d60266508a238cc43dc621fb59415
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/sfink_callgraph_traversal/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] ca63297259ea51bda9518c10f47c590384fbe9e97190f2969a6c0a685c0133c2
[INFO] running `"docker" "start" "-a" "ca63297259ea51bda9518c10f47c590384fbe9e97190f2969a6c0a685c0133c2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/hazgraph-1262d589d5466d3b
[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/cgtraverse-a243cb01a9a1ff1f
[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 hazgraph
[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" "ca63297259ea51bda9518c10f47c590384fbe9e97190f2969a6c0a685c0133c2"`
[INFO] running `"docker" "rm" "-f" "ca63297259ea51bda9518c10f47c590384fbe9e97190f2969a6c0a685c0133c2"`
[INFO] [stdout] ca63297259ea51bda9518c10f47c590384fbe9e97190f2969a6c0a685c0133c2