[INFO] fetching crate wu 0.1.0...
[INFO] checking wu-0.1.0 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate wu 0.1.0 into /workspace/builds/worker-107/source
[INFO] validating manifest of crates.io crate wu 0.1.0 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wu 0.1.0
[INFO] finished tweaking crates.io crate wu 0.1.0
[INFO] tweaked toml for crates.io crate wu 0.1.0 written to /workspace/builds/worker-107/source/Cargo.toml
[INFO] crate crates.io crate wu 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded git2 v0.6.11
[INFO] [stderr]   Downloaded fd-lock v3.0.0
[INFO] [stderr]   Downloaded rustyline v9.0.0
[INFO] [stderr]   Downloaded libgit2-sys v0.6.19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dc0bd8f9800887dff541b6b4066ff80ae5161717c19af52536fe3bbdfaacdd9b
[INFO] running `Command { std: "docker" "start" "-a" "dc0bd8f9800887dff541b6b4066ff80ae5161717c19af52536fe3bbdfaacdd9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc0bd8f9800887dff541b6b4066ff80ae5161717c19af52536fe3bbdfaacdd9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc0bd8f9800887dff541b6b4066ff80ae5161717c19af52536fe3bbdfaacdd9b", kill_on_drop: false }`
[INFO] [stdout] dc0bd8f9800887dff541b6b4066ff80ae5161717c19af52536fe3bbdfaacdd9b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 07512c88bf9f3e2feec8889dbc3d8717ab3f92cd02fda74ab9026d089810db4e
[INFO] running `Command { std: "docker" "start" "-a" "07512c88bf9f3e2feec8889dbc3d8717ab3f92cd02fda74ab9026d089810db4e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]     Checking unicode-bidi v0.3.6
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking gimli v0.25.0
[INFO] [stderr]     Checking endian-type v0.1.2
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]     Checking unicode-segmentation v1.8.0
[INFO] [stderr]     Checking fs_extra v1.2.0
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]    Compiling openssl-sys v0.9.66
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]    Compiling libssh2-sys v0.2.21
[INFO] [stderr]    Compiling curl-sys v0.4.45+curl-7.78.0
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]     Checking tinyvec v1.4.0
[INFO] [stderr]     Checking nibble_vec v0.1.0
[INFO] [stderr]     Checking object v0.26.2
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking radix_trie v0.2.1
[INFO] [stderr]    Compiling libgit2-sys v0.6.19
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking fd-lock v3.0.0
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking nix v0.22.0
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking addr2line v0.16.0
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking rustyline v9.0.0
[INFO] [stderr]     Checking git2 v0.6.11
[INFO] [stderr]     Checking wu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `params_t`
[INFO] [stdout]     --> src/wu/visitor/visitor.rs:1085:25
[INFO] [stdout]      |
[INFO] [stdout] 1085 |                     let params_t = Type::new(TypeNode::Any, TypeMode::Splat(None));
[INFO] [stdout]      |                         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_params_t`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `params_t`
[INFO] [stdout]     --> src/wu/visitor/visitor.rs:1085:25
[INFO] [stdout]      |
[INFO] [stdout] 1085 |                     let params_t = Type::new(TypeNode::Any, TypeMode::Splat(None));
[INFO] [stdout]      |                         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_params_t`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ExternBlock`
[INFO] [stdout]   --> src/wu/parser/ast.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     ExternBlock(Rc<Statement>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Nothing`
[INFO] [stdout]    --> src/wu/visitor/visitor.rs:343:5
[INFO] [stdout]     |
[INFO] [stdout] 343 |     Nothing,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ExternBlock`
[INFO] [stdout]   --> src/wu/parser/ast.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     ExternBlock(Rc<Statement>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Nothing`
[INFO] [stdout]    --> src/wu/visitor/visitor.rs:343:5
[INFO] [stdout]     |
[INFO] [stdout] 343 |     Nothing,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.45s
[INFO] running `Command { std: "docker" "inspect" "07512c88bf9f3e2feec8889dbc3d8717ab3f92cd02fda74ab9026d089810db4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07512c88bf9f3e2feec8889dbc3d8717ab3f92cd02fda74ab9026d089810db4e", kill_on_drop: false }`
[INFO] [stdout] 07512c88bf9f3e2feec8889dbc3d8717ab3f92cd02fda74ab9026d089810db4e