[INFO] fetching crate polywrap_plugin_implementor 0.1.11...
[INFO] building polywrap_plugin_implementor-0.1.11 against master#44f415c1d617ebc7b931a243b7b321ef8a6ca47c for pr-142134-abi-ast-error
[INFO] extracting crate polywrap_plugin_implementor 0.1.11 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate polywrap_plugin_implementor 0.1.11 on toolchain 44f415c1d617ebc7b931a243b7b321ef8a6ca47c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate polywrap_plugin_implementor 0.1.11
[INFO] finished tweaking crates.io crate polywrap_plugin_implementor 0.1.11
[INFO] tweaked toml for crates.io crate polywrap_plugin_implementor 0.1.11 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 164 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.101)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 86d6ad44a1f4a1beaeb604b430af681f4d14f2bb835a48e9ed5b074f00d056c5
[INFO] running `Command { std: "docker" "start" "-a" "86d6ad44a1f4a1beaeb604b430af681f4d14f2bb835a48e9ed5b074f00d056c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "86d6ad44a1f4a1beaeb604b430af681f4d14f2bb835a48e9ed5b074f00d056c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86d6ad44a1f4a1beaeb604b430af681f4d14f2bb835a48e9ed5b074f00d056c5", kill_on_drop: false }`
[INFO] [stdout] 86d6ad44a1f4a1beaeb604b430af681f4d14f2bb835a48e9ed5b074f00d056c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4759f161c9112440397348c2764def16f3e15901f88b0a997ef3ba0f04249853
[INFO] running `Command { std: "docker" "start" "-a" "4759f161c9112440397348c2764def16f3e15901f88b0a997ef3ba0f04249853", kill_on_drop: false }`
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[INFO] [stderr]    Compiling url v2.5.4
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling serde_bytes v0.11.17
[INFO] [stderr]    Compiling polywrap_uri v0.1.11
[INFO] [stderr]    Compiling polywrap_core_macros v0.1.11
[INFO] [stderr]    Compiling schemafy_core v0.6.0
[INFO] [stderr]    Compiling ureq v2.12.1
[INFO] [stderr]    Compiling handlebars v4.5.0
[INFO] [stderr]    Compiling polywrap_schemafy_lib v0.1.0
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling bigdecimal v0.3.1
[INFO] [stderr]    Compiling polywrap_msgpack_serde v0.0.2
[INFO] [stderr]    Compiling polywrap_schemafy v0.1.1
[INFO] [stderr]    Compiling num v0.4.3
[INFO] [stderr]    Compiling fraction v0.12.2
[INFO] [stderr]    Compiling polywrap-jsonref v0.1.0
[INFO] [stderr]    Compiling jsonschema v0.16.1
[INFO] [stderr]    Compiling wrap_manifest_schemas v0.1.11
[INFO] [stderr]    Compiling polywrap_core v0.1.11
[INFO] [stderr]    Compiling polywrap_plugin_implementor v0.1.11 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `output_is_option`
[INFO] [stdout]   --> src/lib.rs:73:33
[INFO] [stdout]    |
[INFO] [stdout] 73 |         |(_, (ident, ident_str, output_is_option, env_is_option))| {
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output_is_option`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 01s
[INFO] running `Command { std: "docker" "inspect" "4759f161c9112440397348c2764def16f3e15901f88b0a997ef3ba0f04249853", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4759f161c9112440397348c2764def16f3e15901f88b0a997ef3ba0f04249853", kill_on_drop: false }`
[INFO] [stdout] 4759f161c9112440397348c2764def16f3e15901f88b0a997ef3ba0f04249853
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d152e89392daf6d1440e22e499a9c00026bd2f58fd9a2de2e7ff2e185facfd5d
[INFO] running `Command { std: "docker" "start" "-a" "d152e89392daf6d1440e22e499a9c00026bd2f58fd9a2de2e7ff2e185facfd5d", kill_on_drop: false }`
[INFO] [stderr]    Compiling polywrap_plugin_implementor v0.1.11 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `output_is_option`
[INFO] [stdout]   --> src/lib.rs:73:33
[INFO] [stdout]    |
[INFO] [stdout] 73 |         |(_, (ident, ident_str, output_is_option, env_is_option))| {
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output_is_option`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output_is_option`
[INFO] [stdout]   --> src/lib.rs:73:33
[INFO] [stdout]    |
[INFO] [stdout] 73 |         |(_, (ident, ident_str, output_is_option, env_is_option))| {
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output_is_option`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.08s
[INFO] running `Command { std: "docker" "inspect" "d152e89392daf6d1440e22e499a9c00026bd2f58fd9a2de2e7ff2e185facfd5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d152e89392daf6d1440e22e499a9c00026bd2f58fd9a2de2e7ff2e185facfd5d", kill_on_drop: false }`
[INFO] [stdout] d152e89392daf6d1440e22e499a9c00026bd2f58fd9a2de2e7ff2e185facfd5d