[INFO] fetching crate occstep 0.1.0...
[INFO] checking occstep-0.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate occstep 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate occstep 0.1.0
[INFO] finished tweaking crates.io crate occstep 0.1.0
[INFO] tweaked toml for crates.io crate occstep 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate occstep 0.1.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 40 packages to latest compatible versions
[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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 4e821e33b12c400c0813f5a8d1671be023007adb85d2aeace2cfb47efc830255
[INFO] running `Command { std: "docker" "start" "-a" "4e821e33b12c400c0813f5a8d1671be023007adb85d2aeace2cfb47efc830255", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e821e33b12c400c0813f5a8d1671be023007adb85d2aeace2cfb47efc830255", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e821e33b12c400c0813f5a8d1671be023007adb85d2aeace2cfb47efc830255", kill_on_drop: false }`
[INFO] [stdout] 4e821e33b12c400c0813f5a8d1671be023007adb85d2aeace2cfb47efc830255
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 504a029b5248c6dfce0bc55b147d76e3f6cb4c0fd2bb1fe96a1ad8128ab620eb
[INFO] running `Command { std: "docker" "start" "-a" "504a029b5248c6dfce0bc55b147d76e3f6cb4c0fd2bb1fe96a1ad8128ab620eb", kill_on_drop: false }`
[INFO] [stderr]     Checking mio v1.1.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.6
[INFO] [stderr]     Checking socket2 v0.6.1
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling tokio-macros v2.6.0
[INFO] [stderr]     Checking tokio v1.48.0
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking occstep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Command` and `Session`
[INFO] [stdout]  --> src/testing.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{Command, CommandReceiveFn, DistributedLog, Nonce, ReceiveCommand, SendCommand, Session};
[INFO] [stdout]   |             ^^^^^^^                                                                        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BTreeSet`
[INFO] [stdout]  --> src/testing.rs:4:24
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::collections::{BTreeSet, BTreeMap, VecDeque};
[INFO] [stdout]   |                        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `LocalTopic` is more private than the item `LocalConsumer`
[INFO] [stdout]   --> src/testing.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub type LocalConsumer = Vec<LocalTopic>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^ type alias `LocalConsumer` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `LocalTopic` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/testing.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct LocalTopic {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `LocalTopic` is more private than the item `LocalConsumer`
[INFO] [stdout]   --> src/testing.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub type LocalConsumer = Vec<LocalTopic>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^ type alias `LocalConsumer` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `LocalTopic` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/testing.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct LocalTopic {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::option::Option<ShardMapReadGuard<BTreeSet<u32>>>, Infallible>
[INFO] [stdout]    --> src/testing.rs:240:17
[INFO] [stdout]     |
[INFO] [stdout] 240 |     let shard = db.sync_get(&()).await.unwrap();
[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<std::option::Option<ShardMapReadGuard<BTreeSet<u32>>>, Infallible>
[INFO] [stdout]    --> src/testing.rs:240:34
[INFO] [stdout]     |
[INFO] [stdout] 240 |     let shard = db.sync_get(&()).await.unwrap();
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::option::Option<ShardMapReadGuard<BTreeSet<u32>>>, Infallible>
[INFO] [stdout]    --> src/testing.rs:240:17
[INFO] [stdout]     |
[INFO] [stdout] 240 |     let shard = db.sync_get(&()).await.unwrap();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `occstep` (lib test) due to 3 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "504a029b5248c6dfce0bc55b147d76e3f6cb4c0fd2bb1fe96a1ad8128ab620eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "504a029b5248c6dfce0bc55b147d76e3f6cb4c0fd2bb1fe96a1ad8128ab620eb", kill_on_drop: false }`
[INFO] [stdout] 504a029b5248c6dfce0bc55b147d76e3f6cb4c0fd2bb1fe96a1ad8128ab620eb
