[INFO] updating cached repository fourohfour/enquel
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/fourohfour/enquel
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/fourohfour/enquel" "work/ex/beta-1.38-1/sources/1.37.0/gh/fourohfour/enquel"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/fourohfour/enquel'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/fourohfour/enquel" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fourohfour/enquel"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fourohfour/enquel'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0add6c82245dab3c7e4e03592fa12ea76b68a30f
[INFO] sha for GitHub repo fourohfour/enquel: 0add6c82245dab3c7e4e03592fa12ea76b68a30f
[INFO] validating manifest of fourohfour/enquel 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 fourohfour/enquel 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 fourohfour/enquel
[INFO] finished frobbing fourohfour/enquel
[INFO] frobbed toml for fourohfour/enquel written to work/ex/beta-1.38-1/sources/1.37.0/gh/fourohfour/enquel/Cargo.toml
[INFO] started frobbing fourohfour/enquel
[INFO] finished frobbing fourohfour/enquel
[INFO] frobbed toml for fourohfour/enquel written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fourohfour/enquel/Cargo.toml
[INFO] crate fourohfour/enquel 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 fourohfour/enquel 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/fourohfour/enquel:/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] 3deb296dbb9427bb1273b4747f31b1fabcbdeab5058c9569892a8289a81b267f
[INFO] running `"docker" "start" "-a" "3deb296dbb9427bb1273b4747f31b1fabcbdeab5058c9569892a8289a81b267f"`
[INFO] [stderr]    Compiling enquel v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `token`
[INFO] [stderr]  --> src/parse.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use token;
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tokens`
[INFO] [stderr]   --> src/main.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let tokens  = tokeniser::tokenise(&inbuf);
[INFO] [stderr]    |         ^^^^^^ help: consider prefixing with an underscore: `_tokens`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `slice`
[INFO] [stderr]   --> src/tokeniser.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     slice : &'a str  ,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `placeholder_origin`
[INFO] [stderr]   --> src/tokeniser.rs:43:1
[INFO] [stderr]    |
[INFO] [stderr] 43 | fn placeholder_origin() -> token::Origin {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `ungrab`
[INFO] [stderr]    --> src/tokeniser.rs:119:5
[INFO] [stderr]     |
[INFO] [stderr] 119 |     fn ungrab(&mut self) -> () {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `ArgClass`
[INFO] [stderr]  --> src/parse.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub enum ArgClass {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `LogicalBlock`
[INFO] [stderr]   --> src/parse.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub enum LogicalBlock {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `EvaluatorType`
[INFO] [stderr]   --> src/parse.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub enum EvaluatorType {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `ComparisonOperator`
[INFO] [stderr]   --> src/parse.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub enum ComparisonOperator {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `NodeData`
[INFO] [stderr]   --> src/parse.rs:38:1
[INFO] [stderr]    |
[INFO] [stderr] 38 | pub enum NodeData {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Node`
[INFO] [stderr]   --> src/parse.rs:80:1
[INFO] [stderr]    |
[INFO] [stderr] 80 | pub struct Node {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add_child`
[INFO] [stderr]   --> src/parse.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     pub fn add_child(&mut self, c : Node) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_child`
[INFO] [stderr]   --> src/parse.rs:90:5
[INFO] [stderr]    |
[INFO] [stderr] 90 |     pub fn new_child(&mut self, data: NodeData) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `walk_display`
[INFO] [stderr]   --> src/parse.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 95 |     fn walk_display(&self, depth: u32) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Tree`
[INFO] [stderr]    --> src/parse.rs:104:1
[INFO] [stderr]     |
[INFO] [stderr] 104 | pub struct Tree {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/parse.rs:109:5
[INFO] [stderr]     |
[INFO] [stderr] 109 |     pub fn new() -> Tree {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `root`
[INFO] [stderr]    --> src/parse.rs:118:5
[INFO] [stderr]     |
[INFO] [stderr] 118 |     pub fn root<'rnode>(&'rnode mut self) -> &'rnode mut Node {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `walk`
[INFO] [stderr]    --> src/parse.rs:122:5
[INFO] [stderr]     |
[INFO] [stderr] 122 |     pub fn walk<'rnode>(&self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.37s
[INFO] running `"docker" "inspect" "3deb296dbb9427bb1273b4747f31b1fabcbdeab5058c9569892a8289a81b267f"`
[INFO] running `"docker" "rm" "-f" "3deb296dbb9427bb1273b4747f31b1fabcbdeab5058c9569892a8289a81b267f"`
[INFO] [stdout] 3deb296dbb9427bb1273b4747f31b1fabcbdeab5058c9569892a8289a81b267f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/fourohfour/enquel:/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] 3aa38ed09e7d40dcef91b18c7ad7d00f67c839e5cfc4c00876e8e64d98d5e55a
[INFO] running `"docker" "start" "-a" "3aa38ed09e7d40dcef91b18c7ad7d00f67c839e5cfc4c00876e8e64d98d5e55a"`
[INFO] [stderr]    Compiling enquel v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `token`
[INFO] [stderr]  --> src/parse.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use token;
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tokens`
[INFO] [stderr]   --> src/main.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let tokens  = tokeniser::tokenise(&inbuf);
[INFO] [stderr]    |         ^^^^^^ help: consider prefixing with an underscore: `_tokens`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `slice`
[INFO] [stderr]   --> src/tokeniser.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     slice : &'a str  ,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `placeholder_origin`
[INFO] [stderr]   --> src/tokeniser.rs:43:1
[INFO] [stderr]    |
[INFO] [stderr] 43 | fn placeholder_origin() -> token::Origin {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `ungrab`
[INFO] [stderr]    --> src/tokeniser.rs:119:5
[INFO] [stderr]     |
[INFO] [stderr] 119 |     fn ungrab(&mut self) -> () {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `ArgClass`
[INFO] [stderr]  --> src/parse.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub enum ArgClass {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `LogicalBlock`
[INFO] [stderr]   --> src/parse.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub enum LogicalBlock {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `EvaluatorType`
[INFO] [stderr]   --> src/parse.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub enum EvaluatorType {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `ComparisonOperator`
[INFO] [stderr]   --> src/parse.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub enum ComparisonOperator {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `NodeData`
[INFO] [stderr]   --> src/parse.rs:38:1
[INFO] [stderr]    |
[INFO] [stderr] 38 | pub enum NodeData {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Node`
[INFO] [stderr]   --> src/parse.rs:80:1
[INFO] [stderr]    |
[INFO] [stderr] 80 | pub struct Node {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add_child`
[INFO] [stderr]   --> src/parse.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     pub fn add_child(&mut self, c : Node) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_child`
[INFO] [stderr]   --> src/parse.rs:90:5
[INFO] [stderr]    |
[INFO] [stderr] 90 |     pub fn new_child(&mut self, data: NodeData) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `walk_display`
[INFO] [stderr]   --> src/parse.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 95 |     fn walk_display(&self, depth: u32) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Tree`
[INFO] [stderr]    --> src/parse.rs:104:1
[INFO] [stderr]     |
[INFO] [stderr] 104 | pub struct Tree {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/parse.rs:109:5
[INFO] [stderr]     |
[INFO] [stderr] 109 |     pub fn new() -> Tree {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `root`
[INFO] [stderr]    --> src/parse.rs:118:5
[INFO] [stderr]     |
[INFO] [stderr] 118 |     pub fn root<'rnode>(&'rnode mut self) -> &'rnode mut Node {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `walk`
[INFO] [stderr]    --> src/parse.rs:122:5
[INFO] [stderr]     |
[INFO] [stderr] 122 |     pub fn walk<'rnode>(&self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `"docker" "inspect" "3aa38ed09e7d40dcef91b18c7ad7d00f67c839e5cfc4c00876e8e64d98d5e55a"`
[INFO] running `"docker" "rm" "-f" "3aa38ed09e7d40dcef91b18c7ad7d00f67c839e5cfc4c00876e8e64d98d5e55a"`
[INFO] [stdout] 3aa38ed09e7d40dcef91b18c7ad7d00f67c839e5cfc4c00876e8e64d98d5e55a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/fourohfour/enquel:/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] 2d8bee95381dedef9e44ba8dae7aefdd0a177dd2c1f4213db2734d39cbf9c6d1
[INFO] running `"docker" "start" "-a" "2d8bee95381dedef9e44ba8dae7aefdd0a177dd2c1f4213db2734d39cbf9c6d1"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/enquel-3b18260136e6a59a
[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" "2d8bee95381dedef9e44ba8dae7aefdd0a177dd2c1f4213db2734d39cbf9c6d1"`
[INFO] running `"docker" "rm" "-f" "2d8bee95381dedef9e44ba8dae7aefdd0a177dd2c1f4213db2734d39cbf9c6d1"`
[INFO] [stdout] 2d8bee95381dedef9e44ba8dae7aefdd0a177dd2c1f4213db2734d39cbf9c6d1