[INFO] cloning repository https://github.com/RXDA/pingcap-talent-plan
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/RXDA/pingcap-talent-plan" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRXDA%2Fpingcap-talent-plan", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRXDA%2Fpingcap-talent-plan'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6ae6987e8eae44142f92a17f0080b70b7b8c0a11
[INFO] checking RXDA/pingcap-talent-plan against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRXDA%2Fpingcap-talent-plan" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/RXDA/pingcap-talent-plan
[INFO] finished tweaking git repo https://github.com/RXDA/pingcap-talent-plan
[INFO] tweaked toml for git repo https://github.com/RXDA/pingcap-talent-plan written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/RXDA/pingcap-talent-plan on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/RXDA/pingcap-talent-plan already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2237aa15dc1bcb51ea7045c7d720b7074bdecc00d9d782a6fc307c1d33e65697
[INFO] running `Command { std: "docker" "start" "-a" "2237aa15dc1bcb51ea7045c7d720b7074bdecc00d9d782a6fc307c1d33e65697", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2237aa15dc1bcb51ea7045c7d720b7074bdecc00d9d782a6fc307c1d33e65697", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2237aa15dc1bcb51ea7045c7d720b7074bdecc00d9d782a6fc307c1d33e65697", kill_on_drop: false }`
[INFO] [stdout] 2237aa15dc1bcb51ea7045c7d720b7074bdecc00d9d782a6fc307c1d33e65697
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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 -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 018f4be0e819e89e782429c5960639df1c344ab7ec2682df0b45684a4b9409cb
[INFO] running `Command { std: "docker" "start" "-a" "018f4be0e819e89e782429c5960639df1c344ab7ec2682df0b45684a4b9409cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling serde_json v1.0.71
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]     Checking itertools v0.10.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]     Checking termtree v0.2.3
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking difflib v0.4.0
[INFO] [stderr]     Checking predicates-tree v1.0.4
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking sled v0.34.7
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking predicates v2.0.3
[INFO] [stderr]     Checking assert_cmd v2.0.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking structopt v0.3.25
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking kvs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/kvs-client.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 | /         #[structopt(name = "KEY", help = "A string key")]
[INFO] [stdout] 25 | |         key: String,
[INFO] [stdout]    | |___________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/kvs-client.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 | /         #[structopt(name = "KEY", help = "A string key")]
[INFO] [stdout] 38 | |         key: String,
[INFO] [stdout]    | |___________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/kvs-client.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 | /         #[structopt(name = "VALUE", help = "The string value of the key")]
[INFO] [stdout] 40 | |         value: String,
[INFO] [stdout]    | |_____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/kvs-client.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 | /         #[structopt(name = "KEY", help = "A string key")]
[INFO] [stdout] 53 | |         key: String,
[INFO] [stdout]    | |___________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `kvs` (bin "kvs-client" test) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/kvs-client.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 | /         #[structopt(name = "KEY", help = "A string key")]
[INFO] [stdout] 25 | |         key: String,
[INFO] [stdout]    | |___________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `kvs` (bin "kvs-client") due to 4 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/kvs-client.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 | /         #[structopt(name = "KEY", help = "A string key")]
[INFO] [stdout] 38 | |         key: String,
[INFO] [stdout]    | |___________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/kvs-client.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 | /         #[structopt(name = "VALUE", help = "The string value of the key")]
[INFO] [stdout] 40 | |         value: String,
[INFO] [stdout]    | |_____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/kvs-client.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 | /         #[structopt(name = "KEY", help = "A string key")]
[INFO] [stdout] 53 | |         key: String,
[INFO] [stdout]    | |___________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "018f4be0e819e89e782429c5960639df1c344ab7ec2682df0b45684a4b9409cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "018f4be0e819e89e782429c5960639df1c344ab7ec2682df0b45684a4b9409cb", kill_on_drop: false }`
[INFO] [stdout] 018f4be0e819e89e782429c5960639df1c344ab7ec2682df0b45684a4b9409cb