[INFO] crate howtocards_backend 0.1.2 is already in cache
[INFO] checking howtocards_backend-0.1.2 against try#3738e44c8fffe9e1fdfda9304a4df74ce7b29152 for pr-68746
[INFO] extracting crate howtocards_backend 0.1.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate howtocards_backend 0.1.2 on toolchain 3738e44c8fffe9e1fdfda9304a4df74ce7b29152
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3738e44c8fffe9e1fdfda9304a4df74ce7b29152" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate howtocards_backend 0.1.2
[INFO] finished tweaking crates.io crate howtocards_backend 0.1.2
[INFO] tweaked toml for crates.io crate howtocards_backend 0.1.2 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3738e44c8fffe9e1fdfda9304a4df74ce7b29152" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3738e44c8fffe9e1fdfda9304a4df74ce7b29152" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[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" "+3738e44c8fffe9e1fdfda9304a4df74ce7b29152" "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] ed918c671e447cc77f5d668ea4f6307218fca2ef11c19d4935e834e4bf5fc84a
[INFO] running `"docker" "start" "-a" "ed918c671e447cc77f5d668ea4f6307218fca2ef11c19d4935e834e4bf5fc84a"`
[INFO] [stderr]    Compiling pq-sys v0.4.6
[INFO] [stderr]    Compiling libdbus-sys v0.2.1
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling v_escape_derive v0.5.6
[INFO] [stderr]     Checking flate2 v1.0.13
[INFO] [stderr]    Compiling diesel_derives v1.4.1
[INFO] [stderr]     Checking serde v1.0.104
[INFO] [stderr]     Checking r2d2 v0.8.8
[INFO] [stderr]     Checking dbus v0.6.5
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]     Checking v_escape v0.7.4
[INFO] [stderr]     Checking v_htmlescape v0.4.5
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking trust-dns-proto v0.6.3
[INFO] [stderr]     Checking trust-dns-proto v0.5.0
[INFO] [stderr]     Checking dotenv v0.13.0
[INFO] [stderr]     Checking notify-rust v3.6.3
[INFO] [stderr]     Checking trust-dns-resolver v0.10.3
[INFO] [stderr]     Checking diesel v1.4.3
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking serde_json v1.0.45
[INFO] [stderr]     Checking ron v0.2.2
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking actix v0.7.9
[INFO] [stderr]     Checking rustbreak v2.0.0-rc3
[INFO] [stderr]     Checking actix-net v0.2.6
[INFO] [stderr]     Checking actix-web v0.7.19
[INFO] [stderr]     Checking howtocards_backend v0.1.2 (/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]     Finished dev [unoptimized + debuginfo] target(s) in 1m 41s
[INFO] running `"docker" "inspect" "ed918c671e447cc77f5d668ea4f6307218fca2ef11c19d4935e834e4bf5fc84a"`
[INFO] running `"docker" "rm" "-f" "ed918c671e447cc77f5d668ea4f6307218fca2ef11c19d4935e834e4bf5fc84a"`
[INFO] [stdout] ed918c671e447cc77f5d668ea4f6307218fca2ef11c19d4935e834e4bf5fc84a