[INFO] cloning repository https://github.com/codec-abc/synacor-challenge-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/codec-abc/synacor-challenge-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodec-abc%2Fsynacor-challenge-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodec-abc%2Fsynacor-challenge-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8106355e9b1dc3a97f41e0c79ff83a12e31d792e
[INFO] documenting codec-abc/synacor-challenge-rust against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodec-abc%2Fsynacor-challenge-rust" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/codec-abc/synacor-challenge-rust on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/codec-abc/synacor-challenge-rust
[INFO] finished tweaking git repo https://github.com/codec-abc/synacor-challenge-rust
[INFO] tweaked toml for git repo https://github.com/codec-abc/synacor-challenge-rust written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/codec-abc/synacor-challenge-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d8f50dd3551c8e7c18bf987f6736f2f9b4b3e10b1937dd593ebc2581434f4160
[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" "d8f50dd3551c8e7c18bf987f6736f2f9b4b3e10b1937dd593ebc2581434f4160", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8f50dd3551c8e7c18bf987f6736f2f9b4b3e10b1937dd593ebc2581434f4160", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8f50dd3551c8e7c18bf987f6736f2f9b4b3e10b1937dd593ebc2581434f4160", kill_on_drop: false }`
[INFO] [stdout] d8f50dd3551c8e7c18bf987f6736f2f9b4b3e10b1937dd593ebc2581434f4160
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 94680c4585ed8140b65624d6a48f1c4998262c091bbca36676935abd78be5175
[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" "94680c4585ed8140b65624d6a48f1c4998262c091bbca36676935abd78be5175", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Documenting synacor_challenge v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/opcode.rs:231:51
[INFO] [stdout]     |
[INFO] [stdout] 231 |     let register_result = read_mem_as_u16_le(mem, (offset + 1));
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/opcode.rs:232:48
[INFO] [stdout]     |
[INFO] [stdout] 232 |     let value_result = read_mem_as_u16_le(mem, (offset + 2));
[INFO] [stdout]     |                                                ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/opcode.rs:256:48
[INFO] [stdout]     |
[INFO] [stdout] 256 |     let value_result = read_mem_as_u16_le(mem, (offset + 1));
[INFO] [stdout]     |                                                ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/opcode.rs:275:48
[INFO] [stdout]     |
[INFO] [stdout] 275 |     let value_result = read_mem_as_u16_le(mem, (offset + 1));
[INFO] [stdout]     |                                                ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/opcode.rs:294:47
[INFO] [stdout]     |
[INFO] [stdout] 294 |     let cell_result = read_mem_as_u16_le(mem, (offset + 1));
[INFO] [stdout]     |                                               ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/opcode.rs:295:56
[INFO] [stdout]     |
[INFO] [stdout] 295 |     let first_operand_result = read_mem_as_u16_le(mem, (offset + 2));
[INFO] [stdout]     |                                                        ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/opcode.rs:296:57
[INFO] [stdout]     |
[INFO] [stdout] 296 |     let second_operand_result = read_mem_as_u16_le(mem, (offset + 3));
[INFO] [stdout]     |                                                         ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.14s
[INFO] running `Command { std: "docker" "inspect" "94680c4585ed8140b65624d6a48f1c4998262c091bbca36676935abd78be5175", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94680c4585ed8140b65624d6a48f1c4998262c091bbca36676935abd78be5175", kill_on_drop: false }`
[INFO] [stdout] 94680c4585ed8140b65624d6a48f1c4998262c091bbca36676935abd78be5175