[INFO] crate ascii_tree 0.1.1 is already in cache
[INFO] extracting crate ascii_tree 0.1.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/ascii_tree/0.1.1
[INFO] extracting crate ascii_tree 0.1.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/ascii_tree/0.1.1
[INFO] validating manifest of ascii_tree-0.1.1 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 ascii_tree-0.1.1 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 ascii_tree-0.1.1
[INFO] finished frobbing ascii_tree-0.1.1
[INFO] frobbed toml for ascii_tree-0.1.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/ascii_tree/0.1.1/Cargo.toml
[INFO] started frobbing ascii_tree-0.1.1
[INFO] finished frobbing ascii_tree-0.1.1
[INFO] frobbed toml for ascii_tree-0.1.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/ascii_tree/0.1.1/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 ascii_tree-0.1.1 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/ascii_tree/0.1.1:/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] 55bb15562d76c5990091186882782ff97a3f32fd6d70bf9909719cb23c2c0f81
[INFO] running `"docker" "start" "-a" "55bb15562d76c5990091186882782ff97a3f32fd6d70bf9909719cb23c2c0f81"`
[INFO] [stderr]    Compiling ascii_tree v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:62:27
[INFO] [stderr]    |
[INFO] [stderr] 62 | pub fn write_tree(f: &mut Write, tree: &Tree) -> fmt::Result { write_tree_element(f, tree, &vec![]) }
[INFO] [stderr]    |                           ^^^^^ help: use `dyn`: `dyn Write`
[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/lib.rs:64:31
[INFO] [stderr]    |
[INFO] [stderr] 64 | fn write_tree_element(f: &mut Write, tree: &Tree, level: &Vec<usize>) -> fmt::Result {
[INFO] [stderr]    |                               ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `"docker" "inspect" "55bb15562d76c5990091186882782ff97a3f32fd6d70bf9909719cb23c2c0f81"`
[INFO] running `"docker" "rm" "-f" "55bb15562d76c5990091186882782ff97a3f32fd6d70bf9909719cb23c2c0f81"`
[INFO] [stdout] 55bb15562d76c5990091186882782ff97a3f32fd6d70bf9909719cb23c2c0f81
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/ascii_tree/0.1.1:/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] 802c4826b90dbed803f9a61311956933906a27ee2f1e772ffae7bc8578b34849
[INFO] running `"docker" "start" "-a" "802c4826b90dbed803f9a61311956933906a27ee2f1e772ffae7bc8578b34849"`
[INFO] [stderr]    Compiling ascii_tree v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:62:27
[INFO] [stderr]    |
[INFO] [stderr] 62 | pub fn write_tree(f: &mut Write, tree: &Tree) -> fmt::Result { write_tree_element(f, tree, &vec![]) }
[INFO] [stderr]    |                           ^^^^^ help: use `dyn`: `dyn Write`
[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/lib.rs:64:31
[INFO] [stderr]    |
[INFO] [stderr] 64 | fn write_tree_element(f: &mut Write, tree: &Tree, level: &Vec<usize>) -> fmt::Result {
[INFO] [stderr]    |                               ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `"docker" "inspect" "802c4826b90dbed803f9a61311956933906a27ee2f1e772ffae7bc8578b34849"`
[INFO] running `"docker" "rm" "-f" "802c4826b90dbed803f9a61311956933906a27ee2f1e772ffae7bc8578b34849"`
[INFO] [stdout] 802c4826b90dbed803f9a61311956933906a27ee2f1e772ffae7bc8578b34849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/ascii_tree/0.1.1:/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] 7d2eed391f749eed31f0f23fc3ab867630b1de58c253e33875bc66d1c24ddfb6
[INFO] running `"docker" "start" "-a" "7d2eed391f749eed31f0f23fc3ab867630b1de58c253e33875bc66d1c24ddfb6"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ascii_tree-13712d3cb144ef0b
[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 ascii_tree
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs -  (line 3) ... FAILED
[INFO] [stdout] test src/lib.rs - write_tree (line 57) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs -  (line 3) stdout ----
[INFO] [stdout] error[E0425]: cannot find function `Leaf` in this scope
[INFO] [stdout]  --> src/lib.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | let l1 = Leaf(vec![String::from("line1"), String::from("line2"), String::from("line3"), String::from("line4")]);
[INFO] [stdout]   |          ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `Leaf` in this scope
[INFO] [stdout]  --> src/lib.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | let l2 = Leaf(vec![String::from("only one line")]);
[INFO] [stdout]   |          ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `Node` in this scope
[INFO] [stdout]  --> src/lib.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | let n1 = Node(String::from("node 1"), vec![l1.clone(), l2.clone()]);
[INFO] [stdout]   |          ^^^^ help: a unit variant with a similar name exists: `None`
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `Node` in this scope
[INFO] [stdout]  --> src/lib.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 6 | let n2 = Node(String::from("node 2"), vec![l2.clone(), l1.clone(), l2.clone()]);
[INFO] [stdout]   |          ^^^^ help: a unit variant with a similar name exists: `None`
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `Node` in this scope
[INFO] [stdout]  --> src/lib.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 7 | let n3 = Node(String::from("node 3"), vec![n1.clone(), l1.clone(), l2.clone()]);
[INFO] [stdout]   |          ^^^^ help: a unit variant with a similar name exists: `None`
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `Node` in this scope
[INFO] [stdout]  --> src/lib.rs:9:10
[INFO] [stdout]   |
[INFO] [stdout] 8 | let n4 = Node(String::from("node 4"), vec![n1, n2, n3]);
[INFO] [stdout]   |          ^^^^ help: a unit variant with a similar name exists: `None`
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `write_tree` in this scope
[INFO] [stdout]   --> src/lib.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | let _ = write_tree(&mut output, &n4);
[INFO] [stdout]    |         ^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - write_tree (line 57) stdout ----
[INFO] [stdout] error[E0425]: cannot find function `write_tree` in this scope
[INFO] [stdout]  --> src/lib.rs:59:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | write_tree(&mut output, &tree);
[INFO] [stdout]   | ^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `tree` in this scope
[INFO] [stdout]  --> src/lib.rs:59:26
[INFO] [stdout]   |
[INFO] [stdout] 4 | write_tree(&mut output, &tree);
[INFO] [stdout]   |                          ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs -  (line 3)
[INFO] [stdout]     src/lib.rs - write_tree (line 57)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `"docker" "inspect" "7d2eed391f749eed31f0f23fc3ab867630b1de58c253e33875bc66d1c24ddfb6"`
[INFO] running `"docker" "rm" "-f" "7d2eed391f749eed31f0f23fc3ab867630b1de58c253e33875bc66d1c24ddfb6"`
[INFO] [stdout] 7d2eed391f749eed31f0f23fc3ab867630b1de58c253e33875bc66d1c24ddfb6