[INFO] crate ruma-identifiers 0.17.0-pre.1 is already in cache
[INFO] checking ruma-identifiers-0.17.0-pre.1 against master#1557fb031b272b4c5bfcc7de5df7eddc7b36a584 for pr-73166
[INFO] extracting crate ruma-identifiers 0.17.0-pre.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate ruma-identifiers 0.17.0-pre.1 on toolchain 1557fb031b272b4c5bfcc7de5df7eddc7b36a584
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ruma-identifiers 0.17.0-pre.1
[INFO] finished tweaking crates.io crate ruma-identifiers 0.17.0-pre.1
[INFO] tweaked toml for crates.io crate ruma-identifiers 0.17.0-pre.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "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] b4720f06ca63fbdfbe8adea7e39ad651e28ea895a642e06bf12ef7d8edd010c6
[INFO] running `Command { std: "docker" "start" "-a" "b4720f06ca63fbdfbe8adea7e39ad651e28ea895a642e06bf12ef7d8edd010c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b4720f06ca63fbdfbe8adea7e39ad651e28ea895a642e06bf12ef7d8edd010c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4720f06ca63fbdfbe8adea7e39ad651e28ea895a642e06bf12ef7d8edd010c6", kill_on_drop: false }`
[INFO] [stdout] b4720f06ca63fbdfbe8adea7e39ad651e28ea895a642e06bf12ef7d8edd010c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b04d54816a99a4c42a57560c32e5c336e374059723e1de5eefae45c6c177eb1
[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" "1b04d54816a99a4c42a57560c32e5c336e374059723e1de5eefae45c6c177eb1", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling strum_macros v0.18.0
[INFO] [stderr]     Checking strum v0.18.0
[INFO] [stderr]     Checking serde v1.0.114
[INFO] [stderr]     Checking serde_json v1.0.56
[INFO] [stderr]     Checking ruma-identifiers v0.17.0-pre.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ServerName`
[INFO] [stdout]    --> src/event_id.rs:116:31
[INFO] [stdout]     |
[INFO] [stdout] 116 |     use crate::{error::Error, ServerName};
[INFO] [stdout]     |                               ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ServerName`
[INFO] [stdout]   --> src/room_id.rs:76:31
[INFO] [stdout]    |
[INFO] [stdout] 76 |     use crate::{error::Error, ServerName};
[INFO] [stdout]    |                               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.76s
[INFO] running `Command { std: "docker" "inspect" "1b04d54816a99a4c42a57560c32e5c336e374059723e1de5eefae45c6c177eb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b04d54816a99a4c42a57560c32e5c336e374059723e1de5eefae45c6c177eb1", kill_on_drop: false }`
[INFO] [stdout] 1b04d54816a99a4c42a57560c32e5c336e374059723e1de5eefae45c6c177eb1