[INFO] fetching crate hamlrs 0.4.3...
[INFO] checking hamlrs-0.4.3 against beta for pr-78714
[INFO] extracting crate hamlrs 0.4.3 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate hamlrs 0.4.3 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hamlrs 0.4.3
[INFO] finished tweaking crates.io crate hamlrs 0.4.3
[INFO] tweaked toml for crates.io crate hamlrs 0.4.3 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] 01af66ec58a5930e95061484ea57ce23a08bb2df2c616b24e4d23898225693b1
[INFO] running `Command { std: "docker" "start" "-a" "01af66ec58a5930e95061484ea57ce23a08bb2df2c616b24e4d23898225693b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "01af66ec58a5930e95061484ea57ce23a08bb2df2c616b24e4d23898225693b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01af66ec58a5930e95061484ea57ce23a08bb2df2c616b24e4d23898225693b1", kill_on_drop: false }`
[INFO] [stdout] 01af66ec58a5930e95061484ea57ce23a08bb2df2c616b24e4d23898225693b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] 6e29cb5e95d68887ba8da71cbed273773b230800ae3b0e6d498578ef5328a43c
[INFO] running `Command { std: "docker" "start" "-a" "6e29cb5e95d68887ba8da71cbed273773b230800ae3b0e6d498578ef5328a43c", kill_on_drop: false }`
[INFO] [stderr]     Checking hamlrs v0.4.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking criterion v0.2.11
[INFO] [stdout] warning: value assigned to `token` is never read
[INFO] [stdout]   --> src/parser.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let mut token: Option<&Token> = None;
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `class` is never read
[INFO] [stdout]   --> src/parser.rs:86:29
[INFO] [stdout]    |
[INFO] [stdout] 86 |                         let mut class = String::new();
[INFO] [stdout]    |                             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `id` is never read
[INFO] [stdout]    --> src/parser.rs:101:29
[INFO] [stdout]     |
[INFO] [stdout] 101 |                         let mut id = String::new();
[INFO] [stdout]     |                             ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `value` is never read
[INFO] [stdout]   --> src/scanner.rs:68:21
[INFO] [stdout]    |
[INFO] [stdout] 68 |                 let mut value: Option<Token> = None;
[INFO] [stdout]    |                     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `token` is never read
[INFO] [stdout]   --> src/parser.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let mut token: Option<&Token> = None;
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `class` is never read
[INFO] [stdout]   --> src/parser.rs:86:29
[INFO] [stdout]    |
[INFO] [stdout] 86 |                         let mut class = String::new();
[INFO] [stdout]    |                             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `id` is never read
[INFO] [stdout]    --> src/parser.rs:101:29
[INFO] [stdout]     |
[INFO] [stdout] 101 |                         let mut id = String::new();
[INFO] [stdout]     |                             ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `value` is never read
[INFO] [stdout]   --> src/scanner.rs:68:21
[INFO] [stdout]    |
[INFO] [stdout] 68 |                 let mut value: Option<Token> = None;
[INFO] [stdout]    |                     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.14s
[INFO] running `Command { std: "docker" "inspect" "6e29cb5e95d68887ba8da71cbed273773b230800ae3b0e6d498578ef5328a43c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e29cb5e95d68887ba8da71cbed273773b230800ae3b0e6d498578ef5328a43c", kill_on_drop: false }`
[INFO] [stdout] 6e29cb5e95d68887ba8da71cbed273773b230800ae3b0e6d498578ef5328a43c