[INFO] fetching crate doctor-syn 0.1.0...
[INFO] testing doctor-syn-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate doctor-syn 0.1.0 into /workspace/builds/worker-118/source
[INFO] validating manifest of crates.io crate doctor-syn 0.1.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate doctor-syn 0.1.0
[INFO] finished tweaking crates.io crate doctor-syn 0.1.0
[INFO] tweaked toml for crates.io crate doctor-syn 0.1.0 written to /workspace/builds/worker-118/source/Cargo.toml
[INFO] crate crates.io crate doctor-syn 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b573d879a06f0bf98b561afd1e6bc7437b383cdbef2c9cf9afd39c9553e33f00
[INFO] running `Command { std: "docker" "start" "-a" "b573d879a06f0bf98b561afd1e6bc7437b383cdbef2c9cf9afd39c9553e33f00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b573d879a06f0bf98b561afd1e6bc7437b383cdbef2c9cf9afd39c9553e33f00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b573d879a06f0bf98b561afd1e6bc7437b383cdbef2c9cf9afd39c9553e33f00", kill_on_drop: false }`
[INFO] [stdout] b573d879a06f0bf98b561afd1e6bc7437b383cdbef2c9cf9afd39c9553e33f00
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9b4068964936cb7b11771105725bf05d85e313ac8b94d8dd24b283aba851ab8
[INFO] running `Command { std: "docker" "start" "-a" "e9b4068964936cb7b11771105725bf05d85e313ac8b94d8dd24b283aba851ab8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling doctor-syn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `sin`
[INFO] [stdout]  --> src/bin/libmgen.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn sin(x: f32) -> f32 {
[INFO] [stdout]   |    ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cos`
[INFO] [stdout]   --> src/bin/libmgen.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn cos(x: f32) -> f32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `exp`
[INFO] [stdout]   --> src/bin/libmgen.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn exp(x: f32) -> f32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ln`
[INFO] [stdout]   --> src/bin/libmgen.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn ln(x: f32) -> f32 {
[INFO] [stdout]    |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_sin`
[INFO] [stdout]    --> src/bin/libmgen.rs:141:4
[INFO] [stdout]     |
[INFO] [stdout] 141 | fn test_sin() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_cos`
[INFO] [stdout]    --> src/bin/libmgen.rs:155:4
[INFO] [stdout]     |
[INFO] [stdout] 155 | fn test_cos() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_exp`
[INFO] [stdout]    --> src/bin/libmgen.rs:169:4
[INFO] [stdout]     |
[INFO] [stdout] 169 | fn test_exp() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_ln`
[INFO] [stdout]    --> src/bin/libmgen.rs:183:4
[INFO] [stdout]     |
[INFO] [stdout] 183 | fn test_ln() {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.99s
[INFO] running `Command { std: "docker" "inspect" "e9b4068964936cb7b11771105725bf05d85e313ac8b94d8dd24b283aba851ab8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9b4068964936cb7b11771105725bf05d85e313ac8b94d8dd24b283aba851ab8", kill_on_drop: false }`
[INFO] [stdout] e9b4068964936cb7b11771105725bf05d85e313ac8b94d8dd24b283aba851ab8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 244f0b4cf94a534b0882fa37602cb2dc7286e6521bbce62a08d3993aede73944
[INFO] running `Command { std: "docker" "start" "-a" "244f0b4cf94a534b0882fa37602cb2dc7286e6521bbce62a08d3993aede73944", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling doctor-syn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `sin`
[INFO] [stdout]  --> src/bin/libmgen.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn sin(x: f32) -> f32 {
[INFO] [stdout]   |    ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cos`
[INFO] [stdout]   --> src/bin/libmgen.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn cos(x: f32) -> f32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `exp`
[INFO] [stdout]   --> src/bin/libmgen.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn exp(x: f32) -> f32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ln`
[INFO] [stdout]   --> src/bin/libmgen.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn ln(x: f32) -> f32 {
[INFO] [stdout]    |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_sin`
[INFO] [stdout]    --> src/bin/libmgen.rs:141:4
[INFO] [stdout]     |
[INFO] [stdout] 141 | fn test_sin() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_cos`
[INFO] [stdout]    --> src/bin/libmgen.rs:155:4
[INFO] [stdout]     |
[INFO] [stdout] 155 | fn test_cos() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_exp`
[INFO] [stdout]    --> src/bin/libmgen.rs:169:4
[INFO] [stdout]     |
[INFO] [stdout] 169 | fn test_exp() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_ln`
[INFO] [stdout]    --> src/bin/libmgen.rs:183:4
[INFO] [stdout]     |
[INFO] [stdout] 183 | fn test_ln() {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.57s
[INFO] running `Command { std: "docker" "inspect" "244f0b4cf94a534b0882fa37602cb2dc7286e6521bbce62a08d3993aede73944", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "244f0b4cf94a534b0882fa37602cb2dc7286e6521bbce62a08d3993aede73944", kill_on_drop: false }`
[INFO] [stdout] 244f0b4cf94a534b0882fa37602cb2dc7286e6521bbce62a08d3993aede73944
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b5cb4c74e07e29ebc910f18491472d2b9dbd1ba18e3f28f26dc2252c0ab62c20
[INFO] running `Command { std: "docker" "start" "-a" "b5cb4c74e07e29ebc910f18491472d2b9dbd1ba18e3f28f26dc2252c0ab62c20", kill_on_drop: false }`
[INFO] [stderr] warning: function is never used: `sin`
[INFO] [stderr]  --> src/bin/libmgen.rs:6:4
[INFO] [stderr]   |
[INFO] [stderr] 6 | fn sin(x: f32) -> f32 {
[INFO] [stderr]   |    ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `cos`
[INFO] [stderr]   --> src/bin/libmgen.rs:18:4
[INFO] [stderr]    |
[INFO] [stderr] 18 | fn cos(x: f32) -> f32 {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `exp`
[INFO] [stderr]   --> src/bin/libmgen.rs:30:4
[INFO] [stderr]    |
[INFO] [stderr] 30 | fn exp(x: f32) -> f32 {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `ln`
[INFO] [stderr]   --> src/bin/libmgen.rs:44:4
[INFO] [stderr]    |
[INFO] [stderr] 44 | fn ln(x: f32) -> f32 {
[INFO] [stderr]    |    ^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_sin`
[INFO] [stderr]    --> src/bin/libmgen.rs:141:4
[INFO] [stderr]     |
[INFO] [stderr] 141 | fn test_sin() {
[INFO] [stderr]     |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_cos`
[INFO] [stderr]    --> src/bin/libmgen.rs:155:4
[INFO] [stderr]     |
[INFO] [stderr] 155 | fn test_cos() {
[INFO] [stderr]     |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_exp`
[INFO] [stderr]    --> src/bin/libmgen.rs:169:4
[INFO] [stderr]     |
[INFO] [stderr] 169 | fn test_exp() {
[INFO] [stderr]     |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_ln`
[INFO] [stderr]    --> src/bin/libmgen.rs:183:4
[INFO] [stderr]     |
[INFO] [stderr] 183 | fn test_ln() {
[INFO] [stderr]     |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `doctor-syn` (bin "libmgen" test) generated 8 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/doctor_syn-eba43ae5be815f2b)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test polynomial::test::test_poly ... ok
[INFO] [stdout] test transformation::collect::collect ... ok
[INFO] [stdout] test variablelist::test_vars ... ok
[INFO] [stdout] test transformation::paren::unary ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/libmgen-5c26bfea72d538d5)
[INFO] [stdout] test transformation::expand::expand ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests doctor-syn
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test src/expression.rs - expression::Expression::approx (line 202) ... FAILED
[INFO] [stdout] test src/expression.rs - expression::Expression::collect_terms (line 249) ... ok
[INFO] [stdout] test src/expression.rs - expression::Expression::paren (line 262) ... ok
[INFO] [stdout] test src/expression.rs - expression::Expression::is_lit (line 163) ... ok
[INFO] [stdout] test src/expression.rs - expression::Expression::subst (line 175) ... ok
[INFO] [stdout] test src/expression.rs - expression::Expression::use_suffix (line 277) ... ok
[INFO] [stdout] test src/expression.rs - expression::Expression::expand (line 220) ... ok
[INFO] [stdout] test src/expression.rs - expression::Expression::eval (line 185) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/expression.rs - expression::Expression::approx (line 202) stdout ----
[INFO] [stdout] error: no rules expected the token `,`
[INFO] [stdout]  --> src/expression.rs:205:92
[INFO] [stdout]   |
[INFO] [stdout] 6 | assert_eq!(expr!(x).approx(2, 0.0, 1.0, name!(x)).unwrap(), expr!(1f64 . mul_add (x , 0f64), Parity::Neither));
[INFO] [stdout]   |                                                                                            ^ no rules expected this token in macro call
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 5 arguments but 4 arguments were supplied
[INFO] [stdout]    --> src/expression.rs:205:21
[INFO] [stdout]     |
[INFO] [stdout] 6   | assert_eq!(expr!(x).approx(2, 0.0, 1.0, name!(x)).unwrap(), expr!(1f64 . mul_add (x , 0f64), Parity::Neither));
[INFO] [stdout]     |                     ^^^^^^ -  ---  ---  -------- supplied 4 arguments
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     expected 5 arguments
[INFO] [stdout]     |
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]    --> /opt/rustwide/workdir/src/expression.rs:207:12
[INFO] [stdout]     |
[INFO] [stdout] 207 |     pub fn approx<T: Evaluateable>(
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0061`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/expression.rs - expression::Expression::approx (line 202)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 7 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.31s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "b5cb4c74e07e29ebc910f18491472d2b9dbd1ba18e3f28f26dc2252c0ab62c20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5cb4c74e07e29ebc910f18491472d2b9dbd1ba18e3f28f26dc2252c0ab62c20", kill_on_drop: false }`
[INFO] [stdout] b5cb4c74e07e29ebc910f18491472d2b9dbd1ba18e3f28f26dc2252c0ab62c20