[INFO] fetching crate lig 0.1.0...
[INFO] checking lig-0.1.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate lig 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate lig 0.1.0 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lig 0.1.0
[INFO] finished tweaking crates.io crate lig 0.1.0
[INFO] tweaked toml for crates.io crate lig 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 22 packages
[INFO] [stderr]       Adding gaze v0.3.0 (latest: v0.5.0)
[INFO] [stderr]       Adding ligature v0.5.0 (latest: v0.7.0)
[INFO] [stderr]       Adding uuid v0.8.2 (latest: v1.8.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ligature v0.5.0
[INFO] [stderr]   Downloaded gaze v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc411b3b8e53bdf0102fb5ac2ec1e685a183d4bdf17ca3e99ad71dcbd1a2fa42
[INFO] running `Command { std: "docker" "start" "-a" "cc411b3b8e53bdf0102fb5ac2ec1e685a183d4bdf17ca3e99ad71dcbd1a2fa42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc411b3b8e53bdf0102fb5ac2ec1e685a183d4bdf17ca3e99ad71dcbd1a2fa42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc411b3b8e53bdf0102fb5ac2ec1e685a183d4bdf17ca3e99ad71dcbd1a2fa42", kill_on_drop: false }`
[INFO] [stdout] cc411b3b8e53bdf0102fb5ac2ec1e685a183d4bdf17ca3e99ad71dcbd1a2fa42
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dae700b6d6f40afac969afb04d41496400a49a0f555908e7fdc708735322592d
[INFO] running `Command { std: "docker" "start" "-a" "dae700b6d6f40afac969afb04d41496400a49a0f555908e7fdc708735322592d", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-segmentation v1.11.0
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking gaze v0.3.0
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking ligature v0.5.0
[INFO] [stderr]     Checking lig v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]   --> src/read.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub fn read(input: &str) -> Result<Vec<Statement>, LigError> {
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]   --> src/read.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub fn read(input: &str) -> Result<Vec<Statement>, LigError> {
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `integer`
[INFO] [stdout]    --> src/read.rs:109:17
[INFO] [stdout]     |
[INFO] [stdout] 109 |             let integer = gaze.attempt(&integer_step)?;
[INFO] [stdout]     |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_integer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `integer`
[INFO] [stdout]    --> src/read.rs:109:17
[INFO] [stdout]     |
[INFO] [stdout] 109 |             let integer = gaze.attempt(&integer_step)?;
[INFO] [stdout]     |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_integer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `gaze`
[INFO] [stdout]    --> src/read.rs:122:13
[INFO] [stdout]     |
[INFO] [stdout] 122 | fn hex_step(gaze: &mut Gaze<&str>) -> Result<Value, NoMatch> {
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_gaze`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `gaze`
[INFO] [stdout]    --> src/read.rs:126:17
[INFO] [stdout]     |
[INFO] [stdout] 126 | fn integer_step(gaze: &mut Gaze<&str>) -> Result<Value, NoMatch> {
[INFO] [stdout]     |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_gaze`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `gaze`
[INFO] [stdout]    --> src/read.rs:130:15
[INFO] [stdout]     |
[INFO] [stdout] 130 | fn bytes_step(gaze: &mut Gaze<&str>) -> Result<Value, NoMatch> {
[INFO] [stdout]     |               ^^^^ help: if this is intentional, prefix it with an underscore: `_gaze`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `gaze`
[INFO] [stdout]    --> src/read.rs:134:16
[INFO] [stdout]     |
[INFO] [stdout] 134 | fn string_step(gaze: &mut Gaze<&str>) -> Result<Value, NoMatch> {
[INFO] [stdout]     |                ^^^^ help: if this is intentional, prefix it with an underscore: `_gaze`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `gaze`
[INFO] [stdout]    --> src/read.rs:122:13
[INFO] [stdout]     |
[INFO] [stdout] 122 | fn hex_step(gaze: &mut Gaze<&str>) -> Result<Value, NoMatch> {
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_gaze`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `gaze`
[INFO] [stdout]    --> src/read.rs:138:19
[INFO] [stdout]     |
[INFO] [stdout] 138 | fn statement_step(gaze: &mut Gaze<&str>) -> Result<Statement, NoMatch> {
[INFO] [stdout]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_gaze`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `gaze`
[INFO] [stdout]    --> src/read.rs:126:17
[INFO] [stdout]     |
[INFO] [stdout] 126 | fn integer_step(gaze: &mut Gaze<&str>) -> Result<Value, NoMatch> {
[INFO] [stdout]     |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_gaze`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `gaze`
[INFO] [stdout]    --> src/read.rs:130:15
[INFO] [stdout]     |
[INFO] [stdout] 130 | fn bytes_step(gaze: &mut Gaze<&str>) -> Result<Value, NoMatch> {
[INFO] [stdout]     |               ^^^^ help: if this is intentional, prefix it with an underscore: `_gaze`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `gaze`
[INFO] [stdout]    --> src/read.rs:134:16
[INFO] [stdout]     |
[INFO] [stdout] 134 | fn string_step(gaze: &mut Gaze<&str>) -> Result<Value, NoMatch> {
[INFO] [stdout]     |                ^^^^ help: if this is intentional, prefix it with an underscore: `_gaze`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `gaze`
[INFO] [stdout]    --> src/read.rs:138:19
[INFO] [stdout]     |
[INFO] [stdout] 138 | fn statement_step(gaze: &mut Gaze<&str>) -> Result<Statement, NoMatch> {
[INFO] [stdout]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_gaze`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bytes_step` is never used
[INFO] [stdout]    --> src/read.rs:130:4
[INFO] [stdout]     |
[INFO] [stdout] 130 | fn bytes_step(gaze: &mut Gaze<&str>) -> Result<Value, NoMatch> {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `statement_step` is never used
[INFO] [stdout]    --> src/read.rs:138:4
[INFO] [stdout]     |
[INFO] [stdout] 138 | fn statement_step(gaze: &mut Gaze<&str>) -> Result<Statement, NoMatch> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bytes_step` is never used
[INFO] [stdout]    --> src/read.rs:130:4
[INFO] [stdout]     |
[INFO] [stdout] 130 | fn bytes_step(gaze: &mut Gaze<&str>) -> Result<Value, NoMatch> {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `statement_step` is never used
[INFO] [stdout]    --> src/read.rs:138:4
[INFO] [stdout]     |
[INFO] [stdout] 138 | fn statement_step(gaze: &mut Gaze<&str>) -> Result<Statement, NoMatch> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `read`
[INFO] [stdout]  --> tests/read_spec.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use lig::read::{read, read_attribute, read_entity, read_value};
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Bytes`, `Statement`
[INFO] [stdout]  --> tests/read_spec.rs:7:27
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ligature::{Attribute, Bytes, Entity, Statement, Value};
[INFO] [stdout]   |                           ^^^^^          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.67s
[INFO] running `Command { std: "docker" "inspect" "dae700b6d6f40afac969afb04d41496400a49a0f555908e7fdc708735322592d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dae700b6d6f40afac969afb04d41496400a49a0f555908e7fdc708735322592d", kill_on_drop: false }`
[INFO] [stdout] dae700b6d6f40afac969afb04d41496400a49a0f555908e7fdc708735322592d