[INFO] updating cached repository https://github.com/alekratz/file-lang
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/alekratz/file-lang
[INFO] [stderr]    05ab26e..f82a61a  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f82a61aeda97327efd91d7dca4b2f805940adde5
[INFO] testing alekratz/file-lang against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Falekratz%2Ffile-lang" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alekratz/file-lang on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/alekratz/file-lang
[INFO] finished tweaking git repo https://github.com/alekratz/file-lang
[INFO] tweaked toml for git repo https://github.com/alekratz/file-lang written to work/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/alekratz/file-lang already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] a454c9c2f837293c9bb848c8e9f57d74663f16e2213d05243f9e3ef59ece115f
[INFO] running `"docker" "start" "-a" "a454c9c2f837293c9bb848c8e9f57d74663f16e2213d05243f9e3ef59ece115f"`
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling proc-macro2 v1.0.3
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling cc v1.0.42
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]    Compiling unicode-width v0.1.6
[INFO] [stderr]    Compiling doc-comment v0.3.1
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]    Compiling proc-macro2 v0.2.3
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling quote v0.4.2
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling syn v0.12.15
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling backtrace v0.3.37
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling shrinkwraprs v0.2.1
[INFO] [stderr]    Compiling snafu-derive v0.5.0
[INFO] [stderr]    Compiling structopt-derive v0.3.1
[INFO] [stderr]    Compiling snafu v0.5.0
[INFO] [stderr]    Compiling structopt v0.3.1
[INFO] [stderr]    Compiling file-lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]   --> src/common/span.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `expect_char`
[INFO] [stderr]    --> src/syn/lexer.rs:312:5
[INFO] [stderr]     |
[INFO] [stderr] 312 |     fn expect_char(&mut self, ch: char, expected: impl ToString) -> Result<char> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `text`
[INFO] [stderr]   --> src/syn/parser.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn text(&self) -> &'text str {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_eof`
[INFO] [stderr]   --> src/syn/parser.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub fn is_eof(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `String`
[INFO] [stderr]   --> src/compile/ir.rs:83:5
[INFO] [stderr]    |
[INFO] [stderr] 83 |     String(String),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `arity`
[INFO] [stderr]   --> src/vm/fun.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     pub fn arity(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `load_register`
[INFO] [stderr]    --> src/vm/fun.rs:150:5
[INFO] [stderr]     |
[INFO] [stderr] 150 |     pub fn load_register(&self, binding: &Binding) -> Option<CopyValue> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_name_binding`
[INFO] [stderr]   --> src/vm/pool.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub fn get_name_binding(&self, name: &str) -> Binding {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `last_frame`
[INFO] [stderr]   --> src/vm/stack.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn last_frame(&self) -> Option<&StackFrame> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `pool_mut`
[INFO] [stderr]   --> src/vm/store.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub fn pool_mut(&mut self) -> &mut Pool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `HeapRef`
[INFO] [stderr]   --> src/vm/value.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     HeapRef(HeapRef),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `String`
[INFO] [stderr]   --> src/vm/value.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     String(String),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `stack_frame`
[INFO] [stderr]   --> src/vm/mod.rs:89:5
[INFO] [stderr]    |
[INFO] [stderr] 89 |     pub fn stack_frame(&self) -> &StackFrame {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.19s
[INFO] running `"docker" "inspect" "a454c9c2f837293c9bb848c8e9f57d74663f16e2213d05243f9e3ef59ece115f"`
[INFO] running `"docker" "rm" "-f" "a454c9c2f837293c9bb848c8e9f57d74663f16e2213d05243f9e3ef59ece115f"`
[INFO] [stdout] a454c9c2f837293c9bb848c8e9f57d74663f16e2213d05243f9e3ef59ece115f
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] a180ae34c9869320f24f97f856ff0880b571d793e4a51c2a38f57fc719a4ffd4
[INFO] running `"docker" "start" "-a" "a180ae34c9869320f24f97f856ff0880b571d793e4a51c2a38f57fc719a4ffd4"`
[INFO] [stderr]    Compiling file-lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/compile/mod.rs:234:14
[INFO] [stderr]     |
[INFO] [stderr] 234 |         let (span, head, tail) = flatten_bin_expr(expr);
[INFO] [stderr]     |              ^^^^ help: consider prefixing with an underscore: `_span`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]   --> src/common/span.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `expect_char`
[INFO] [stderr]    --> src/syn/lexer.rs:312:5
[INFO] [stderr]     |
[INFO] [stderr] 312 |     fn expect_char(&mut self, ch: char, expected: impl ToString) -> Result<char> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `text`
[INFO] [stderr]   --> src/syn/parser.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn text(&self) -> &'text str {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `String`
[INFO] [stderr]   --> src/compile/ir.rs:83:5
[INFO] [stderr]    |
[INFO] [stderr] 83 |     String(String),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `arity`
[INFO] [stderr]   --> src/vm/fun.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     pub fn arity(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `load_register`
[INFO] [stderr]    --> src/vm/fun.rs:150:5
[INFO] [stderr]     |
[INFO] [stderr] 150 |     pub fn load_register(&self, binding: &Binding) -> Option<CopyValue> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_name_binding`
[INFO] [stderr]   --> src/vm/pool.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub fn get_name_binding(&self, name: &str) -> Binding {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `last_frame`
[INFO] [stderr]   --> src/vm/stack.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn last_frame(&self) -> Option<&StackFrame> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `pool_mut`
[INFO] [stderr]   --> src/vm/store.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub fn pool_mut(&mut self) -> &mut Pool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `HeapRef`
[INFO] [stderr]   --> src/vm/value.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     HeapRef(HeapRef),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `String`
[INFO] [stderr]   --> src/vm/value.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     String(String),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `stack_frame`
[INFO] [stderr]   --> src/vm/mod.rs:89:5
[INFO] [stderr]    |
[INFO] [stderr] 89 |     pub fn stack_frame(&self) -> &StackFrame {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.56s
[INFO] running `"docker" "inspect" "a180ae34c9869320f24f97f856ff0880b571d793e4a51c2a38f57fc719a4ffd4"`
[INFO] running `"docker" "rm" "-f" "a180ae34c9869320f24f97f856ff0880b571d793e4a51c2a38f57fc719a4ffd4"`
[INFO] [stdout] a180ae34c9869320f24f97f856ff0880b571d793e4a51c2a38f57fc719a4ffd4
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] d179b0a4695725d50199f48f730fc6981c61b72831f7b70dfa09646c72a0d683
[INFO] running `"docker" "start" "-a" "d179b0a4695725d50199f48f730fc6981c61b72831f7b70dfa09646c72a0d683"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.26s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/file_lang-77932bd093e9c12b
[INFO] [stdout] 
[INFO] [stdout] running 18 tests
[INFO] [stdout] test syn::lexer::test::test_bin_numbers ... ok
[INFO] [stdout] test syn::lexer::test::test_exponents ... ok
[INFO] [stdout] test syn::lexer::test::test_keywords ... ok
[INFO] [stdout] test syn::parser::test::test_parser_atom ... ok
[INFO] [stdout] test compile::test::test_sub_expr_precedence ... ok
[INFO] [stdout] test syn::lexer::test::test_dec_numbers ... ok
[INFO] [stdout] test compile::test::test_bin_expr_precedence ... ok
[INFO] [stdout] test compile::test::test_atom_expr_precedence ... ok
[INFO] [stdout] test syn::parser::test::test_parser_fun_def_stmt ... ok
[INFO] [stdout] test syn::lexer::test::test_oct_numbers ... ok
[INFO] [stdout] test syn::lexer::test::test_real_numbers ... ok
[INFO] [stdout] test syn::parser::test::test_parser_bin_expr ... ok
[INFO] [stdout] test syn::lexer::test::test_idents ... ok
[INFO] [stdout] test syn::parser::test::test_parser_assign_stmt ... ok
[INFO] [stdout] test syn::lexer::test::test_ops ... ok
[INFO] [stdout] test syn::parser::test::test_parser_un_expr ... ok
[INFO] [stdout] test syn::lexer::test::test_hex_numbers ... ok
[INFO] [stdout] test compile::test::test_flatten_bin_expr ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "d179b0a4695725d50199f48f730fc6981c61b72831f7b70dfa09646c72a0d683"`
[INFO] running `"docker" "rm" "-f" "d179b0a4695725d50199f48f730fc6981c61b72831f7b70dfa09646c72a0d683"`
[INFO] [stdout] d179b0a4695725d50199f48f730fc6981c61b72831f7b70dfa09646c72a0d683