[INFO] fetching crate mathlang 0.1.0...
[INFO] checking mathlang-0.1.0 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate mathlang 0.1.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate mathlang 0.1.0
[INFO] finished tweaking crates.io crate mathlang 0.1.0
[INFO] tweaked toml for crates.io crate mathlang 0.1.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mathlang 0.1.0 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 14 packages to latest compatible versions
[INFO] [stderr]       Adding memchr v2.3.4 (available: v2.7.5)
[INFO] [stderr]       Adding nom v6.2.2 (available: v8.0.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 28f9d22c93d7b4c638a583fd62ad782db4491792303eeb23290aee425de42a72
[INFO] running `Command { std: "docker" "start" "-a" "28f9d22c93d7b4c638a583fd62ad782db4491792303eeb23290aee425de42a72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "28f9d22c93d7b4c638a583fd62ad782db4491792303eeb23290aee425de42a72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28f9d22c93d7b4c638a583fd62ad782db4491792303eeb23290aee425de42a72", kill_on_drop: false }`
[INFO] [stdout] 28f9d22c93d7b4c638a583fd62ad782db4491792303eeb23290aee425de42a72
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6791b9cd946a5dca1279212569a12db784ca319d8a70c977b098e70edc60e4b1
[INFO] running `Command { std: "docker" "start" "-a" "6791b9cd946a5dca1279212569a12db784ca319d8a70c977b098e70edc60e4b1", kill_on_drop: false }`
[INFO] [stderr]    Compiling radium v0.5.3
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking ryu v1.0.20
[INFO] [stderr]     Checking funty v1.1.0
[INFO] [stderr]     Checking wyz v0.2.0
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking cfg-if v1.0.3
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling nom v6.2.2
[INFO] [stderr]     Checking bitvec v0.19.6
[INFO] [stderr]     Checking mathlang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `Parse` is never used
[INFO] [stdout]  --> src/parse/mod.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub(crate) trait Parse
[INFO] [stdout]   |                  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Identifier` is never constructed
[INFO] [stdout]  --> src/parse/atomic.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Identifier(String);
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Number` is never constructed
[INFO] [stdout]   --> src/parse/atomic.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub struct Number(f64);
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Expression` is never used
[INFO] [stdout]  --> src/parse/expression.rs:9:10
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub enum Expression {
[INFO] [stdout]   |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `boxed` is never used
[INFO] [stdout]   --> src/parse/expression.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl Expression {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] 33 |     fn boxed(self) -> Box<Self> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `infix_tree` is never used
[INFO] [stdout]   --> src/parse/expression.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn infix_tree<'a, R, S>(
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]   --> src/parse/expression.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn add(i: &str) -> IResult<&str, Expression> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `subtract` is never used
[INFO] [stdout]   --> src/parse/expression.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn subtract(i: &str) -> IResult<&str, Expression> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `multiply` is never used
[INFO] [stdout]   --> src/parse/expression.rs:69:4
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn multiply(i: &str) -> IResult<&str, Expression> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `divide` is never used
[INFO] [stdout]   --> src/parse/expression.rs:73:4
[INFO] [stdout]    |
[INFO] [stdout] 73 | fn divide(i: &str) -> IResult<&str, Expression> {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `power` is never used
[INFO] [stdout]   --> src/parse/expression.rs:77:4
[INFO] [stdout]    |
[INFO] [stdout] 77 | fn power(i: &str) -> IResult<&str, Expression> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `squareroot` is never used
[INFO] [stdout]   --> src/parse/expression.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn squareroot(i: &str) -> IResult<&str, Expression> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `negate` is never used
[INFO] [stdout]   --> src/parse/expression.rs:89:4
[INFO] [stdout]    |
[INFO] [stdout] 89 | fn negate(i: &str) -> IResult<&str, Expression> {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `direct` is never used
[INFO] [stdout]   --> src/parse/expression.rs:97:4
[INFO] [stdout]    |
[INFO] [stdout] 97 | fn direct(i: &str) -> IResult<&str, Expression> {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `literal` is never used
[INFO] [stdout]    --> src/parse/expression.rs:111:4
[INFO] [stdout]     |
[INFO] [stdout] 111 | fn literal(i: &str) -> IResult<&str, Expression> {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `number` is never used
[INFO] [stdout]    --> src/parse/expression.rs:122:4
[INFO] [stdout]     |
[INFO] [stdout] 122 | fn number(i: &str) -> IResult<&str, Expression> {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_alpha` is never used
[INFO] [stdout]  --> src/parse/util.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn is_alpha(c: char) -> bool {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_number` is never used
[INFO] [stdout]  --> src/parse/util.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn is_number(c: char) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_ident_char` is never used
[INFO] [stdout]   --> src/parse/util.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn is_ident_char(c: char) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decimal` is never used
[INFO] [stdout]   --> src/parse/util.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn decimal(i: &str) -> nom::IResult<&str, &str> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `whitespace` is never used
[INFO] [stdout]   --> src/parse/util.rs:26:15
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub(crate) fn whitespace(s: &str) -> IResult<&str, &str> {
[INFO] [stdout]    |               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `skip_ws` is never used
[INFO] [stdout]   --> src/parse/util.rs:31:15
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub(crate) fn skip_ws<'a, T>(
[INFO] [stdout]    |               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.77s
[INFO] running `Command { std: "docker" "inspect" "6791b9cd946a5dca1279212569a12db784ca319d8a70c977b098e70edc60e4b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6791b9cd946a5dca1279212569a12db784ca319d8a70c977b098e70edc60e4b1", kill_on_drop: false }`
[INFO] [stdout] 6791b9cd946a5dca1279212569a12db784ca319d8a70c977b098e70edc60e4b1