[INFO] fetching crate completion 0.2.1...
[INFO] checking completion-0.2.1 against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] extracting crate completion 0.2.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate completion 0.2.1 on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate completion 0.2.1
[INFO] finished tweaking crates.io crate completion 0.2.1
[INFO] tweaked toml for crates.io crate completion 0.2.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded aliasable v0.1.3
[INFO] [stderr]   Downloaded completion-macro v0.2.0
[INFO] [stderr]   Downloaded completion-io v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 03e1c7786a33f72d20959aab3055025c2ab88a84ec5d5ec76936ddff75335382
[INFO] running `Command { std: "docker" "start" "-a" "03e1c7786a33f72d20959aab3055025c2ab88a84ec5d5ec76936ddff75335382", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "03e1c7786a33f72d20959aab3055025c2ab88a84ec5d5ec76936ddff75335382", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03e1c7786a33f72d20959aab3055025c2ab88a84ec5d5ec76936ddff75335382", kill_on_drop: false }`
[INFO] [stdout] 03e1c7786a33f72d20959aab3055025c2ab88a84ec5d5ec76936ddff75335382
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 62eab726710a34086f866419b03c5fd1849939442513257a29f9085dac1f6089
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "62eab726710a34086f866419b03c5fd1849939442513257a29f9085dac1f6089", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]    Compiling completion v0.2.1 (/tmp/fixit)
[INFO] [stderr]     Checking aliasable v0.1.3
[INFO] [stderr]     Checking completion-core v0.2.0
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Migrating build.rs from 2018 edition to 2021
[INFO] [stderr]     Checking completion-io v0.2.0
[INFO] [stderr]    Compiling completion-macro v0.2.0
[INFO] [stderr]    Migrating src/lib.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/stream/adapters/map.rs (1 fix)
[INFO] [stderr]    Migrating tests/hygiene.rs from 2018 edition to 2021
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.05s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]    Compiling completion v0.2.1 (/tmp/fixit)
[INFO] [stdout] error: unused variable: `y`
[INFO] [stdout]   --> src/macros/future/tests.rs:80:47
[INFO] [stdout]    |
[INFO] [stdout] 80 | async fn lifetimes_async<'a, 'b, T>(x: &'a T, y: &&&String, z: &mut Cow<'a, str>) -> &'a T {
[INFO] [stdout]    |                                               ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/macros/future/tests.rs:1:9
[INFO] [stdout]    |
[INFO] [stdout] 1  | #![deny(warnings)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_variables)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused variable: `z`
[INFO] [stdout]   --> src/macros/future/tests.rs:80:61
[INFO] [stdout]    |
[INFO] [stdout] 80 | async fn lifetimes_async<'a, 'b, T>(x: &'a T, y: &&&String, z: &mut Cow<'a, str>) -> &'a T {
[INFO] [stdout]    |                                                             ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused variable: `param`
[INFO] [stdout]   --> src/macros/future/tests.rs:99:28
[INFO] [stdout]    |
[INFO] [stdout] 99 |     async fn method(&self, param: &'static i32) -> impl Clone {
[INFO] [stdout]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_param`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `completion` due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] [stderr] error: failed to check after updating to 2021
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `cargo check --frozen --all --all-targets --message-format=json` (exit status: 101)
[INFO] running `Command { std: "docker" "inspect" "62eab726710a34086f866419b03c5fd1849939442513257a29f9085dac1f6089", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62eab726710a34086f866419b03c5fd1849939442513257a29f9085dac1f6089", kill_on_drop: false }`
[INFO] [stdout] 62eab726710a34086f866419b03c5fd1849939442513257a29f9085dac1f6089