[INFO] fetching crate howtocards 0.1.3...
[INFO] checking howtocards-0.1.3 against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] extracting crate howtocards 0.1.3 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate howtocards 0.1.3 on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate howtocards 0.1.3
[INFO] finished tweaking crates.io crate howtocards 0.1.3
[INFO] tweaked toml for crates.io crate howtocards 0.1.3 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 98747f60aa6b89df8171cf345e6e8b84d82bedabd6c29784403f6a9beba2b4c6
[INFO] running `"docker" "start" "-a" "98747f60aa6b89df8171cf345e6e8b84d82bedabd6c29784403f6a9beba2b4c6"`
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling failure_derive v0.1.7
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[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking match_cfg v0.1.0
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
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[INFO] [stderr]    Compiling ring v0.13.5
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[INFO] [stderr]    Compiling libdbus-sys v0.2.1
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[INFO] [stderr]     Checking parking_lot_core v0.7.2
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[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]     Checking base64 v0.10.1
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[INFO] [stderr]    Compiling actix_derive v0.3.2
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[INFO] [stderr]    Compiling serde_derive v1.0.106
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[INFO] [stderr]    Compiling diesel_derives v1.4.1
[INFO] [stderr]     Checking v_escape v0.7.4
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[INFO] [stderr]     Checking trust-dns-proto v0.6.3
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[INFO] [stderr]     Checking trust-dns-resolver v0.10.3
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[INFO] [stderr]     Checking uuid v0.7.4
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[INFO] [stderr]     Checking actix v0.7.9
[INFO] [stderr]     Checking actix-net v0.2.6
[INFO] [stderr]     Checking howtocards v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/db/token.rs:37:21
[INFO] [stderr]    |
[INFO] [stderr] 37 |                 let mut tokens = self.by_user_id.get_mut(user_id).unwrap();
[INFO] [stderr]    |                     ----^^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/db/token.rs:37:21
[INFO] [stderr]    |
[INFO] [stderr] 37 |                 let mut tokens = self.by_user_id.get_mut(user_id).unwrap();
[INFO] [stderr]    |                     ----^^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 46s
[INFO] running `"docker" "inspect" "98747f60aa6b89df8171cf345e6e8b84d82bedabd6c29784403f6a9beba2b4c6"`
[INFO] running `"docker" "rm" "-f" "98747f60aa6b89df8171cf345e6e8b84d82bedabd6c29784403f6a9beba2b4c6"`
[INFO] [stdout] 98747f60aa6b89df8171cf345e6e8b84d82bedabd6c29784403f6a9beba2b4c6