[INFO] fetching crate prolangkit 0.1.16...
[INFO] checking prolangkit-0.1.16 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate prolangkit 0.1.16 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate prolangkit 0.1.16
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate prolangkit 0.1.16
[INFO] tweaked toml for crates.io crate prolangkit 0.1.16 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate prolangkit 0.1.16 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] crate crates.io crate prolangkit 0.1.16 already has a lockfile, it will not be regenerated
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 49e067f446b2526e3913485f984ee2fdd1af0cf217b94a6774f3b85b9658d1a9
[INFO] running `Command { std: "docker" "start" "-a" "49e067f446b2526e3913485f984ee2fdd1af0cf217b94a6774f3b85b9658d1a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "49e067f446b2526e3913485f984ee2fdd1af0cf217b94a6774f3b85b9658d1a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49e067f446b2526e3913485f984ee2fdd1af0cf217b94a6774f3b85b9658d1a9", kill_on_drop: false }`
[INFO] [stdout] 49e067f446b2526e3913485f984ee2fdd1af0cf217b94a6774f3b85b9658d1a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 0c438593cd5148a92d4e499bd8a784b0b69ab92e54f86ed12b62f1a3cfdb22f4
[INFO] running `Command { std: "docker" "start" "-a" "0c438593cd5148a92d4e499bd8a784b0b69ab92e54f86ed12b62f1a3cfdb22f4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.89
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling beef v0.5.2
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.85
[INFO] [stderr]    Compiling logos-codegen v0.14.2
[INFO] [stderr]    Compiling prolangkit_macros v0.1.0
[INFO] [stderr]    Compiling logos-derive v0.14.2
[INFO] [stderr]     Checking logos v0.14.2
[INFO] [stderr]     Checking prolangkit v0.1.16 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `buh`
[INFO] [stdout]   --> examples/test.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let buh = db.get_assoc_mut::<Baz>(foo);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_buh`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> examples/test.rs:14:16
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Foo(u32);
[INFO] [stdout]    |            --- ^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> examples/test.rs:17:16
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct Bar(f32);
[INFO] [stdout]    |            --- ^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> examples/test.rs:20:16
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub struct Baz(&'static str);
[INFO] [stdout]    |            --- ^^^^^^^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.66s
[INFO] running `Command { std: "docker" "inspect" "0c438593cd5148a92d4e499bd8a784b0b69ab92e54f86ed12b62f1a3cfdb22f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c438593cd5148a92d4e499bd8a784b0b69ab92e54f86ed12b62f1a3cfdb22f4", kill_on_drop: false }`
[INFO] [stdout] 0c438593cd5148a92d4e499bd8a784b0b69ab92e54f86ed12b62f1a3cfdb22f4