[INFO] cloning repository https://github.com/pschafhalter/rich_tasks_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pschafhalter/rich_tasks_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpschafhalter%2Frich_tasks_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpschafhalter%2Frich_tasks_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 361821bb458775d318c359f8b1bf32ffbf02efba
[INFO] checking pschafhalter/rich_tasks_rust against try#b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8 for pr-78363
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpschafhalter%2Frich_tasks_rust" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pschafhalter/rich_tasks_rust on toolchain b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pschafhalter/rich_tasks_rust
[INFO] finished tweaking git repo https://github.com/pschafhalter/rich_tasks_rust
[INFO] tweaked toml for git repo https://github.com/pschafhalter/rich_tasks_rust written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/pschafhalter/rich_tasks_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ad9200f8d9a32f53103aab380669a9ca6c6327856d2daffbe986f91c57298db2
[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" "ad9200f8d9a32f53103aab380669a9ca6c6327856d2daffbe986f91c57298db2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad9200f8d9a32f53103aab380669a9ca6c6327856d2daffbe986f91c57298db2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad9200f8d9a32f53103aab380669a9ca6c6327856d2daffbe986f91c57298db2", kill_on_drop: false }`
[INFO] [stdout] ad9200f8d9a32f53103aab380669a9ca6c6327856d2daffbe986f91c57298db2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] eff44e4563a3286e9bbbfabb3c091f3622034ec41709af9a27e70a890b4a83bf
[INFO] running `Command { std: "docker" "start" "-a" "eff44e4563a3286e9bbbfabb3c091f3622034ec41709af9a27e70a890b4a83bf", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.46
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking futures-sink v0.3.7
[INFO] [stderr]     Checking futures-core v0.3.7
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking futures-channel v0.3.7
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling pin-project-internal v1.0.1
[INFO] [stderr]    Compiling futures-macro v0.3.7
[INFO] [stderr]     Checking pin-project v1.0.1
[INFO] [stderr]     Checking futures-util v0.3.7
[INFO] [stderr]     Checking futures-executor v0.3.7
[INFO] [stderr]     Checking futures v0.3.7
[INFO] [stderr]     Checking rich_tasks v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `spawn`
[INFO] [stdout]   --> src/main.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 |     fn spawn(&self, future: impl Future<Output = ()> + 'static + Send) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `spawn`
[INFO] [stdout]   --> src/main.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 |     fn spawn(&self, future: impl Future<Output = ()> + 'static + Send) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.79s
[INFO] running `Command { std: "docker" "inspect" "eff44e4563a3286e9bbbfabb3c091f3622034ec41709af9a27e70a890b4a83bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eff44e4563a3286e9bbbfabb3c091f3622034ec41709af9a27e70a890b4a83bf", kill_on_drop: false }`
[INFO] [stdout] eff44e4563a3286e9bbbfabb3c091f3622034ec41709af9a27e70a890b4a83bf