[INFO] cloning repository https://github.com/jlmanriquez/tikv-training
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jlmanriquez/tikv-training" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjlmanriquez%2Ftikv-training", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjlmanriquez%2Ftikv-training'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] db9462196ec87ea6c90ce665190e1c24dc3d56e4
[INFO] checking jlmanriquez/tikv-training against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjlmanriquez%2Ftikv-training" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jlmanriquez/tikv-training on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jlmanriquez/tikv-training
[INFO] finished tweaking git repo https://github.com/jlmanriquez/tikv-training
[INFO] tweaked toml for git repo https://github.com/jlmanriquez/tikv-training written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/jlmanriquez/tikv-training already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c1e39784e3f3cc890b60d8864938b5c5ba16631928ede67b0c1f05eefabd3f63
[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" "c1e39784e3f3cc890b60d8864938b5c5ba16631928ede67b0c1f05eefabd3f63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c1e39784e3f3cc890b60d8864938b5c5ba16631928ede67b0c1f05eefabd3f63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1e39784e3f3cc890b60d8864938b5c5ba16631928ede67b0c1f05eefabd3f63", kill_on_drop: false }`
[INFO] [stdout] c1e39784e3f3cc890b60d8864938b5c5ba16631928ede67b0c1f05eefabd3f63
[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" "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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b051d5b47bd5376a26f87d80ff7a443a1aa455593d0912b7afe5a929e9b8d292
[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" "b051d5b47bd5376a26f87d80ff7a443a1aa455593d0912b7afe5a929e9b8d292", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling syn v1.0.19
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling serde v1.0.110
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]    Compiling escargot v0.4.0
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking predicates-core v1.0.0
[INFO] [stderr]     Checking normalize-line-endings v0.3.0
[INFO] [stderr]     Checking treeline v0.1.0
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking predicates-tree v1.0.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]     Checking float-cmp v0.6.0
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking kvs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/bin/kvs.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | /     match app.subcommand() {
[INFO] [stdout] 27 | |         ("set", _matches) => panic!("unimplemented"),
[INFO] [stdout] 28 | |         ("get", _matches) => panic!("unimplemented"),
[INFO] [stdout] 29 | |         ("rm", _matches) => panic!("unimplemented"),
[INFO] [stdout] 30 | |         _ => return Err("subcommand 'set' is required"),
[INFO] [stdout] 31 | |     }
[INFO] [stdout]    | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 32 | 
[INFO] [stdout] 33 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking predicates v1.0.4
[INFO] [stderr]    Compiling serde_derive v1.0.110
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]     Checking assert_cmd v0.11.1
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/bin/kvs.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | /     match app.subcommand() {
[INFO] [stdout] 27 | |         ("set", _matches) => panic!("unimplemented"),
[INFO] [stdout] 28 | |         ("get", _matches) => panic!("unimplemented"),
[INFO] [stdout] 29 | |         ("rm", _matches) => panic!("unimplemented"),
[INFO] [stdout] 30 | |         _ => return Err("subcommand 'set' is required"),
[INFO] [stdout] 31 | |     }
[INFO] [stdout]    | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 32 | 
[INFO] [stdout] 33 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 50.64s
[INFO] running `Command { std: "docker" "inspect" "b051d5b47bd5376a26f87d80ff7a443a1aa455593d0912b7afe5a929e9b8d292", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b051d5b47bd5376a26f87d80ff7a443a1aa455593d0912b7afe5a929e9b8d292", kill_on_drop: false }`
[INFO] [stdout] b051d5b47bd5376a26f87d80ff7a443a1aa455593d0912b7afe5a929e9b8d292