[INFO] crate debug_tree 0.2.5 is already in cache
[INFO] extracting crate debug_tree 0.2.5 into work/ex/beta-1.38-1/sources/1.37.0/reg/debug_tree/0.2.5
[INFO] extracting crate debug_tree 0.2.5 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/debug_tree/0.2.5
[INFO] validating manifest of debug_tree-0.2.5 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 debug_tree-0.2.5 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 debug_tree-0.2.5
[INFO] finished frobbing debug_tree-0.2.5
[INFO] frobbed toml for debug_tree-0.2.5 written to work/ex/beta-1.38-1/sources/1.37.0/reg/debug_tree/0.2.5/Cargo.toml
[INFO] started frobbing debug_tree-0.2.5
[INFO] finished frobbing debug_tree-0.2.5
[INFO] frobbed toml for debug_tree-0.2.5 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/debug_tree/0.2.5/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 debug_tree-0.2.5 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-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/debug_tree/0.2.5:/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] b653062ff2e53242632b6a51c023ee2cc70e39753866926a58e0285dece1f7ff
[INFO] running `"docker" "start" "-a" "b653062ff2e53242632b6a51c023ee2cc70e39753866926a58e0285dece1f7ff"`
[INFO] [stderr]    Compiling debug_tree v0.2.5 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/tree.rs:61:13
[INFO] [stderr]    |
[INFO] [stderr] 61 |         let mut pad: String;
[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]     Finished dev [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `"docker" "inspect" "b653062ff2e53242632b6a51c023ee2cc70e39753866926a58e0285dece1f7ff"`
[INFO] running `"docker" "rm" "-f" "b653062ff2e53242632b6a51c023ee2cc70e39753866926a58e0285dece1f7ff"`
[INFO] [stdout] b653062ff2e53242632b6a51c023ee2cc70e39753866926a58e0285dece1f7ff
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/debug_tree/0.2.5:/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] 855e3f442389b30c576467ea4116a0dd7b0b30cfd3bcc677e78058fb959556e8
[INFO] running `"docker" "start" "-a" "855e3f442389b30c576467ea4116a0dd7b0b30cfd3bcc677e78058fb959556e8"`
[INFO] [stderr]    Compiling debug_tree v0.2.5 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/tree.rs:61:13
[INFO] [stderr]    |
[INFO] [stderr] 61 |         let mut pad: String;
[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]     Finished dev [unoptimized + debuginfo] target(s) in 1.67s
[INFO] running `"docker" "inspect" "855e3f442389b30c576467ea4116a0dd7b0b30cfd3bcc677e78058fb959556e8"`
[INFO] running `"docker" "rm" "-f" "855e3f442389b30c576467ea4116a0dd7b0b30cfd3bcc677e78058fb959556e8"`
[INFO] [stdout] 855e3f442389b30c576467ea4116a0dd7b0b30cfd3bcc677e78058fb959556e8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/debug_tree/0.2.5:/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] 9ef7e335568e1140720af2afb36ddeb4291f00812f9934a6c08183eec108763c
[INFO] running `"docker" "start" "-a" "9ef7e335568e1140720af2afb36ddeb4291f00812f9934a6c08183eec108763c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/debug_tree-ea21baf73606a6dc
[INFO] [stdout] running 17 tests
[INFO] [stdout] test test::test::leaf_with_value ... ok
[INFO] [stdout] test test::test::indent ... ok
[INFO] [stdout] test test::test::enabled_output ... ok
[INFO] [stdout] test default::test::named_branch ... ok
[INFO] [stdout] test test::test::macros ... ok
[INFO] [stdout] test default::test::leaf_with_value ... ok
[INFO] [stdout] test test::test::mid ... ok
[INFO] [stdout] test test::test::macros_with_fn ... ok
[INFO] [stdout] test test::test::macros2 ... ok
[INFO] [stdout] test test::test::test_branch ... ok
[INFO] [stdout] test test::test::depth ... ok
[INFO] [stdout] test test::test::disabled_output ... ok
[INFO] [stdout] test default::test::unnamed_branch ... ok
[INFO] [stdout] test test::test::test_branch2 ... ok
[INFO] [stdout] test test::test::recursive ... ok
[INFO] [stdout] test test::test::nested ... ok
[INFO] [stdout] test test::test::simple ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 17 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests debug_tree
[INFO] [stdout] 
[INFO] [stdout] running 24 tests
[INFO] [stdout] test src/lib.rs - TreeBuilder::add_leaf (line 155) ... ok
[INFO] [stdout] test src/default/mod.rs - add_branch (line 80) ... ok
[INFO] [stdout] test src/lib.rs - TreeBuilder::add_branch (line 57) ... ok
[INFO] [stdout] test src/lib.rs - TreeBuilder::add_branch (line 74) ... ok
[INFO] [stdout] test src/default/mod.rs - add_leaf (line 26) ... ok
[INFO] [stdout] test src/default/mod.rs - default::default_tree (line 7) ... ok
[INFO] [stdout] test src/lib.rs - TreeBuilder::clear (line 305) ... ok
[INFO] [stdout] test src/default/mod.rs - add_leaf_value (line 52) ... ok
[INFO] [stdout] test src/lib.rs - TreeBuilder::depth (line 220) ... ok
[INFO] [stdout] test src/lib.rs - TreeBuilder::enter (line 171) ... ok
[INFO] [stdout] test src/lib.rs - TreeBuilder::flush_print (line 255) ... ok
[INFO] [stdout] test src/lib.rs - TreeBuilder::enter_scoped (line 105) ... ok
[INFO] [stdout] test src/lib.rs - TreeBuilder::enter_scoped (line 123) ... ok
[INFO] [stdout] test src/lib.rs - TreeBuilder::flush_string (line 289) ... ok
[INFO] [stdout] test src/lib.rs - TreeBuilder::exit (line 193) ... ok
[INFO] [stdout] test src/lib.rs - TreeBuilder::new (line 19) ... ok
[INFO] [stdout] test src/lib.rs - TreeBuilder::is_enabled (line 342) ... ok
[INFO] [stdout] test src/lib.rs - TreeBuilder::peek_print (line 237) ... ok
[INFO] [stdout] test src/lib.rs - TreeBuilder::peek_string (line 273) ... ok
[INFO] [stdout] test src/lib.rs - TreeBuilder::set_indentation (line 38) ... ok
[INFO] [stdout] test src/lib.rs - TreeBuilder::set_enabled (line 324) ... ok
[INFO] [stdout] test src/lib.rs - add_branch_to (line 414) ... ok
[INFO] [stdout] test src/lib.rs - add_leaf_value_to (line 384) ... ok
[INFO] [stdout] test src/lib.rs - add_leaf_to (line 362) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 24 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "9ef7e335568e1140720af2afb36ddeb4291f00812f9934a6c08183eec108763c"`
[INFO] running `"docker" "rm" "-f" "9ef7e335568e1140720af2afb36ddeb4291f00812f9934a6c08183eec108763c"`
[INFO] [stdout] 9ef7e335568e1140720af2afb36ddeb4291f00812f9934a6c08183eec108763c