[INFO] fetching crate taschenrechner 0.2.2...
[INFO] checking taschenrechner-0.2.2 against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] extracting crate taschenrechner 0.2.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate taschenrechner 0.2.2 on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate taschenrechner 0.2.2
[INFO] finished tweaking crates.io crate taschenrechner 0.2.2
[INFO] tweaked toml for crates.io crate taschenrechner 0.2.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate taschenrechner 0.2.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 945e00a59204a10e56cc1bd151747f71df7d0a5e74a5fe3e28f6f4ede2ec5729
[INFO] running `Command { std: "docker" "start" "-a" "945e00a59204a10e56cc1bd151747f71df7d0a5e74a5fe3e28f6f4ede2ec5729", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "945e00a59204a10e56cc1bd151747f71df7d0a5e74a5fe3e28f6f4ede2ec5729", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "945e00a59204a10e56cc1bd151747f71df7d0a5e74a5fe3e28f6f4ede2ec5729", kill_on_drop: false }`
[INFO] [stdout] 945e00a59204a10e56cc1bd151747f71df7d0a5e74a5fe3e28f6f4ede2ec5729
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3552e478986be8825f58fb888ad938edf7d5e1700f3505e1894a6f99e110a216
[INFO] running `Command { std: "docker" "start" "-a" "3552e478986be8825f58fb888ad938edf7d5e1700f3505e1894a6f99e110a216", kill_on_drop: false }`
[INFO] [stderr]     Checking taschenrechner v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/cas/parser.rs:68:13
[INFO] [stdout]    |
[INFO] [stdout] 68 |             token => Err(ParserErr::Panic(format!("unexpected token `{}`", token))),
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/cas/parser.rs:83:21
[INFO] [stdout]    |
[INFO] [stdout] 83 |                     _ => Err(ParserErr::Panic(format!(
[INFO] [stdout]    |                     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> src/cli/display.rs:20:36
[INFO] [stdout]    |
[INFO] [stdout] 20 |             LexerErr::Panic { msg, at } => {
[INFO] [stdout]    |                                    ^^ help: try ignoring the field: `at: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/cas/expr/atom/number/ops.rs:79:24
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub(crate) fn fact(mut self) -> Number {
[INFO] [stdout]    |                        ----^^^^
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `exp`
[INFO] [stdout]   --> src/cas/expr/atom/number/ops.rs:75:19
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub(crate) fn exp(self) -> Number {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `angle`
[INFO] [stdout]    --> src/cas/expr/atom/number/ops.rs:177:19
[INFO] [stdout]     |
[INFO] [stdout] 177 |     pub(crate) fn angle(self, rhs: Number) -> Number {
[INFO] [stdout]     |                   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_hex`
[INFO] [stdout]   --> src/cas/expr/atom/number.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn parse_hex(lexer: &mut Lexer) -> Result<Number, LexerErr> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_bin`
[INFO] [stdout]   --> src/cas/expr/atom/number.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fn parse_bin(lexer: &mut Lexer) -> Result<Number, LexerErr> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_hex_digit`
[INFO] [stdout]    --> src/cas/expr/atom/number.rs:101:4
[INFO] [stdout]     |
[INFO] [stdout] 101 | fn is_hex_digit(pot: &char) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_bin_digit`
[INFO] [stdout]    --> src/cas/expr/atom/number.rs:105:4
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn is_bin_digit(pot: &char) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `order`
[INFO] [stdout]    --> src/cas/expr.rs:282:8
[INFO] [stdout]     |
[INFO] [stdout] 282 |     fn order(&mut self) {}
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `simplify`
[INFO] [stdout]    --> src/cas/expr.rs:285:8
[INFO] [stdout]     |
[INFO] [stdout] 285 |     fn simplify(&mut self) {}
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `HEX_DIGITS`
[INFO] [stdout]   --> src/cas/lexer.rs:32:1
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub(crate) const HEX_DIGITS: &'static str = "0123456789ABCDEF";
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `BIN_DIGITS`
[INFO] [stdout]   --> src/cas/lexer.rs:33:1
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub(crate) const BIN_DIGITS: &'static str = "01";
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/cas/parser.rs:68:13
[INFO] [stdout]    |
[INFO] [stdout] 68 |             token => Err(ParserErr::Panic(format!("unexpected token `{}`", token))),
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/cas/parser.rs:83:21
[INFO] [stdout]    |
[INFO] [stdout] 83 |                     _ => Err(ParserErr::Panic(format!(
[INFO] [stdout]    |                     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> src/cli/display.rs:20:36
[INFO] [stdout]    |
[INFO] [stdout] 20 |             LexerErr::Panic { msg, at } => {
[INFO] [stdout]    |                                    ^^ help: try ignoring the field: `at: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/cas/parser.rs:96:17
[INFO] [stdout]    |
[INFO] [stdout] 96 |                 lexer.token();
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/cas/parser.rs:108:21
[INFO] [stdout]     |
[INFO] [stdout] 108 |                     lexer.token();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/cas/expr/atom/number/ops.rs:79:24
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub(crate) fn fact(mut self) -> Number {
[INFO] [stdout]    |                        ----^^^^
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `exp`
[INFO] [stdout]   --> src/cas/expr/atom/number/ops.rs:75:19
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub(crate) fn exp(self) -> Number {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `angle`
[INFO] [stdout]    --> src/cas/expr/atom/number/ops.rs:177:19
[INFO] [stdout]     |
[INFO] [stdout] 177 |     pub(crate) fn angle(self, rhs: Number) -> Number {
[INFO] [stdout]     |                   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_hex`
[INFO] [stdout]   --> src/cas/expr/atom/number.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn parse_hex(lexer: &mut Lexer) -> Result<Number, LexerErr> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_bin`
[INFO] [stdout]   --> src/cas/expr/atom/number.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fn parse_bin(lexer: &mut Lexer) -> Result<Number, LexerErr> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_hex_digit`
[INFO] [stdout]    --> src/cas/expr/atom/number.rs:101:4
[INFO] [stdout]     |
[INFO] [stdout] 101 | fn is_hex_digit(pot: &char) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_bin_digit`
[INFO] [stdout]    --> src/cas/expr/atom/number.rs:105:4
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn is_bin_digit(pot: &char) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `order`
[INFO] [stdout]    --> src/cas/expr.rs:282:8
[INFO] [stdout]     |
[INFO] [stdout] 282 |     fn order(&mut self) {}
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `simplify`
[INFO] [stdout]    --> src/cas/expr.rs:285:8
[INFO] [stdout]     |
[INFO] [stdout] 285 |     fn simplify(&mut self) {}
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `HEX_DIGITS`
[INFO] [stdout]   --> src/cas/lexer.rs:32:1
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub(crate) const HEX_DIGITS: &'static str = "0123456789ABCDEF";
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `BIN_DIGITS`
[INFO] [stdout]   --> src/cas/lexer.rs:33:1
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub(crate) const BIN_DIGITS: &'static str = "01";
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/cas/parser.rs:96:17
[INFO] [stdout]    |
[INFO] [stdout] 96 |                 lexer.token();
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/cas/parser.rs:108:21
[INFO] [stdout]     |
[INFO] [stdout] 108 |                     lexer.token();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.13s
[INFO] running `Command { std: "docker" "inspect" "3552e478986be8825f58fb888ad938edf7d5e1700f3505e1894a6f99e110a216", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3552e478986be8825f58fb888ad938edf7d5e1700f3505e1894a6f99e110a216", kill_on_drop: false }`
[INFO] [stdout] 3552e478986be8825f58fb888ad938edf7d5e1700f3505e1894a6f99e110a216