[INFO] fetching crate air-interpreter-value 0.1.0...
[INFO] checking air-interpreter-value-0.1.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate air-interpreter-value 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate air-interpreter-value 0.1.0
[INFO] finished tweaking crates.io crate air-interpreter-value 0.1.0
[INFO] tweaked toml for crates.io crate air-interpreter-value 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate air-interpreter-value 0.1.0 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 14 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8a1d079d2488e7921a11afec30d86223f6c185fd4607060ae52ca312e91e7459
[INFO] running `Command { std: "docker" "start" "-a" "8a1d079d2488e7921a11afec30d86223f6c185fd4607060ae52ca312e91e7459", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a1d079d2488e7921a11afec30d86223f6c185fd4607060ae52ca312e91e7459", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a1d079d2488e7921a11afec30d86223f6c185fd4607060ae52ca312e91e7459", kill_on_drop: false }`
[INFO] [stdout] 8a1d079d2488e7921a11afec30d86223f6c185fd4607060ae52ca312e91e7459
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cce3fa414af0f31ef6ec9dcd882436d67bfd74a634d36c8b14c2efb471fb31b1
[INFO] running `Command { std: "docker" "start" "-a" "cce3fa414af0f31ef6ec9dcd882436d67bfd74a634d36c8b14c2efb471fb31b1", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]     Checking memchr v2.7.5
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking serde_json v1.0.140
[INFO] [stderr]     Checking air-interpreter-value v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `serde::ser::Serializer`
[INFO] [stdout]   --> src/value/mod.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub use serde::ser::Serializer;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::ser::Serializer`
[INFO] [stdout]   --> src/value/mod.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub use serde::ser::Serializer;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Type` is never constructed
[INFO] [stdout]   --> src/value/index.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 | struct Type<'a>(&'a JValue);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Type` is never constructed
[INFO] [stdout]   --> src/value/index.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 | struct Type<'a>(&'a JValue);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.69s
[INFO] running `Command { std: "docker" "inspect" "cce3fa414af0f31ef6ec9dcd882436d67bfd74a634d36c8b14c2efb471fb31b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cce3fa414af0f31ef6ec9dcd882436d67bfd74a634d36c8b14c2efb471fb31b1", kill_on_drop: false }`
[INFO] [stdout] cce3fa414af0f31ef6ec9dcd882436d67bfd74a634d36c8b14c2efb471fb31b1