[INFO] fetching crate stylish-core 0.1.2...
[INFO] checking stylish-core-0.1.2 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate stylish-core 0.1.2 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate stylish-core 0.1.2
[INFO] finished tweaking crates.io crate stylish-core 0.1.2
[INFO] tweaked toml for crates.io crate stylish-core 0.1.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate stylish-core 0.1.2 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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 17 packages to latest compatible versions
[INFO] [stderr]       Adding with_builtin_macros v0.0.3 (available: v0.1.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ea8c00498ec30d35e3c4010a27a05e270addea5fe2ed34a2e3afbbd1ab5168db
[INFO] running `Command { std: "docker" "start" "-a" "ea8c00498ec30d35e3c4010a27a05e270addea5fe2ed34a2e3afbbd1ab5168db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ea8c00498ec30d35e3c4010a27a05e270addea5fe2ed34a2e3afbbd1ab5168db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea8c00498ec30d35e3c4010a27a05e270addea5fe2ed34a2e3afbbd1ab5168db", kill_on_drop: false }`
[INFO] [stdout] ea8c00498ec30d35e3c4010a27a05e270addea5fe2ed34a2e3afbbd1ab5168db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1f844dbe1a6f0370a237765609fab02bff19a0bf1cef5a87fc48705aa2c7d450
[INFO] running `Command { std: "docker" "start" "-a" "1f844dbe1a6f0370a237765609fab02bff19a0bf1cef5a87fc48705aa2c7d450", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling stylish-style v0.1.1
[INFO] [stderr]     Checking stylish-core v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stdout] warning: struct `StdProxy` is never constructed
[INFO] [stdout]   --> src/std_compat.rs:78:19
[INFO] [stdout]    |
[INFO] [stdout] 78 | pub(crate) struct StdProxy<'a, 'b>(pub(crate) &'a mut crate::formatter::Formatter<'b>);
[INFO] [stdout]    |                   ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StdFmt` is never constructed
[INFO] [stdout]  --> src/arguments.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct StdFmt<'a> {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StdFmtOther` is never constructed
[INFO] [stdout]   --> src/arguments.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct StdFmtOther<'a>(
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StdFmtDebug` is never constructed
[INFO] [stdout]   --> src/arguments.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct StdFmtDebug<'a>(
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling with_builtin_macros-proc_macros v0.0.3
[INFO] [stderr]    Compiling stylish-macros v0.1.2
[INFO] [stderr]     Checking with_builtin_macros v0.0.3
[INFO] [stderr]     Checking stylish-core v0.1.2
[INFO] [stderr]     Checking stylish v0.1.0
[INFO] [stdout] warning: struct `StdProxy` is never constructed
[INFO] [stdout]   --> src/std_compat.rs:78:19
[INFO] [stdout]    |
[INFO] [stdout] 78 | pub(crate) struct StdProxy<'a, 'b>(pub(crate) &'a mut crate::formatter::Formatter<'b>);
[INFO] [stdout]    |                   ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StdFmt` is never constructed
[INFO] [stdout]  --> src/arguments.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct StdFmt<'a> {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StdFmtOther` is never constructed
[INFO] [stdout]   --> src/arguments.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct StdFmtOther<'a>(
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StdFmtDebug` is never constructed
[INFO] [stdout]   --> src/arguments.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct StdFmtDebug<'a>(
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.92s
[INFO] running `Command { std: "docker" "inspect" "1f844dbe1a6f0370a237765609fab02bff19a0bf1cef5a87fc48705aa2c7d450", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f844dbe1a6f0370a237765609fab02bff19a0bf1cef5a87fc48705aa2c7d450", kill_on_drop: false }`
[INFO] [stdout] 1f844dbe1a6f0370a237765609fab02bff19a0bf1cef5a87fc48705aa2c7d450