[INFO] fetching crate type-onion 0.2.1...
[INFO] checking type-onion-0.2.1 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate type-onion 0.2.1 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate type-onion 0.2.1
[INFO] finished tweaking crates.io crate type-onion 0.2.1
[INFO] tweaked toml for crates.io crate type-onion 0.2.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate type-onion 0.2.1 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 42a46d7afee54a6ada6533dbc74604b69f08edc4053bcc13637da0d2a06f4c51
[INFO] running `Command { std: "docker" "start" "-a" "42a46d7afee54a6ada6533dbc74604b69f08edc4053bcc13637da0d2a06f4c51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "42a46d7afee54a6ada6533dbc74604b69f08edc4053bcc13637da0d2a06f4c51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42a46d7afee54a6ada6533dbc74604b69f08edc4053bcc13637da0d2a06f4c51", kill_on_drop: false }`
[INFO] [stdout] 42a46d7afee54a6ada6533dbc74604b69f08edc4053bcc13637da0d2a06f4c51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] c9e7c1defb5de05edff8b8f8499be8a2860beb809b795f72a06908117f25fd8f
[INFO] running `Command { std: "docker" "start" "-a" "c9e7c1defb5de05edff8b8f8499be8a2860beb809b795f72a06908117f25fd8f", kill_on_drop: false }`
[INFO] [stderr]     Checking type-onion v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/lib.rs:22:30
[INFO] [stdout]    |
[INFO] [stdout] 22 |                 .filter(|(i, a)| !pos2s.contains(&i))
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/lib.rs:23:25
[INFO] [stdout]    |
[INFO] [stdout] 23 |                 .find(|(i, x)| **x == b)
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/lib.rs:22:30
[INFO] [stdout]    |
[INFO] [stdout] 22 |                 .filter(|(i, a)| !pos2s.contains(&i))
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/lib.rs:23:25
[INFO] [stdout]    |
[INFO] [stdout] 23 |                 .find(|(i, x)| **x == b)
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "c9e7c1defb5de05edff8b8f8499be8a2860beb809b795f72a06908117f25fd8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9e7c1defb5de05edff8b8f8499be8a2860beb809b795f72a06908117f25fd8f", kill_on_drop: false }`
[INFO] [stdout] c9e7c1defb5de05edff8b8f8499be8a2860beb809b795f72a06908117f25fd8f