[INFO] fetching crate flumedb 0.1.6...
[INFO] checking flumedb-0.1.6 against master#4d1bd0db7f489b22c6d8aa2385937a95412c015b for pr-114682
[INFO] extracting crate flumedb 0.1.6 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate flumedb 0.1.6 on toolchain 4d1bd0db7f489b22c6d8aa2385937a95412c015b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flumedb 0.1.6
[INFO] finished tweaking crates.io crate flumedb 0.1.6
[INFO] tweaked toml for crates.io crate flumedb 0.1.6 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
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[INFO] [stdout] b47e2cdda245e5e499bb85df316ffc72634e778c1c6702e5be5b9897465ccef2
[INFO] running `Command { std: "docker" "start" "-a" "b47e2cdda245e5e499bb85df316ffc72634e778c1c6702e5be5b9897465ccef2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b47e2cdda245e5e499bb85df316ffc72634e778c1c6702e5be5b9897465ccef2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b47e2cdda245e5e499bb85df316ffc72634e778c1c6702e5be5b9897465ccef2", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+4d1bd0db7f489b22c6d8aa2385937a95412c015b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b766b411a85aab171abd802704d658429854cd53201a8f79fbab7f28010d0a03
[INFO] running `Command { std: "docker" "start" "-a" "b766b411a85aab171abd802704d658429854cd53201a8f79fbab7f28010d0a03", kill_on_drop: false }`
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[INFO] [stderr]     Checking flumedb v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `algo` is never read
[INFO] [stdout]   --> src/go_offset_log.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 38 | struct GoMsgPackKey<'a> {
[INFO] [stdout]    |        ------------ field in this struct
[INFO] [stdout] 39 |     #[serde(rename = "Algo")]
[INFO] [stdout] 40 |     algo: &'a str,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `GoMsgPackKey` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `sequence` is never read
[INFO] [stdout]   --> src/go_offset_log.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 56 | struct GoMsgPackData<'a> {
[INFO] [stdout]    |        ------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 62 |     sequence: u64,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `GoMsgPackData` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> benches/bench.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `forward` found for struct `Forward` in the current scope
[INFO] [stdout]    --> benches/bench.rs:111:34
[INFO] [stdout]     |
[INFO] [stdout] 111 |                 let count = iter.forward().count();
[INFO] [stdout]     |                                  ^^^^^^^ method not found in `Forward<OffsetLogIter<u32>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `iter_at_offset` found for struct `flumedb::OffsetLog` in the current scope
[INFO] [stdout]    --> benches/bench.rs:124:20
[INFO] [stdout]     |
[INFO] [stdout] 124 |             || log.iter_at_offset(log.end()),
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/iter_at_offset.rs:4:8
[INFO] [stdout]     |
[INFO] [stdout] 4   |     fn iter_at_offset(&self, offset: u64) -> I;
[INFO] [stdout]     |        -------------- the method is available for `flumedb::OffsetLog<u32>` here
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   + use crate::flumedb::IterAtOffset;
[INFO] [stdout]     |
[INFO] [stdout] help: there is a method with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 124 |             || log.bidir_iter_at_offset(log.end()),
[INFO] [stdout]     |                    ~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `forward` found for struct `Forward` in the current scope
[INFO] [stdout]    --> benches/bench.rs:142:22
[INFO] [stdout]     |
[INFO] [stdout] 141 |                   let sum: u64 = iter
[INFO] [stdout]     |  ________________________________-
[INFO] [stdout] 142 | |                     .forward()
[INFO] [stdout]     | |                     -^^^^^^^ method not found in `Forward<OffsetLogIter<u32>>`
[INFO] [stdout]     | |_____________________|
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `flumedb` (bench "bench") due to 4 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: field `algo` is never read
[INFO] [stdout]   --> src/go_offset_log.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 38 | struct GoMsgPackKey<'a> {
[INFO] [stdout]    |        ------------ field in this struct
[INFO] [stdout] 39 |     #[serde(rename = "Algo")]
[INFO] [stdout] 40 |     algo: &'a str,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `GoMsgPackKey` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `sequence` is never read
[INFO] [stdout]   --> src/go_offset_log.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 56 | struct GoMsgPackData<'a> {
[INFO] [stdout]    |        ------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 62 |     sequence: u64,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `GoMsgPackData` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b766b411a85aab171abd802704d658429854cd53201a8f79fbab7f28010d0a03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b766b411a85aab171abd802704d658429854cd53201a8f79fbab7f28010d0a03", kill_on_drop: false }`
[INFO] [stdout] b766b411a85aab171abd802704d658429854cd53201a8f79fbab7f28010d0a03
