[INFO] fetching crate feophant 0.9.0...
[INFO] checking feophant-0.9.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate feophant 0.9.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate feophant 0.9.0
[INFO] finished tweaking crates.io crate feophant 0.9.0
[INFO] tweaked toml for crates.io crate feophant 0.9.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate feophant 0.9.0 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] crate crates.io crate feophant 0.9.0 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 }`
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[INFO] [stdout] 175e7b6c1b396ca1fcdf74bd97b4f2f65b976c4d37101ddec38c9e0c317c2229
[INFO] running `Command { std: "docker" "start" "-a" "175e7b6c1b396ca1fcdf74bd97b4f2f65b976c4d37101ddec38c9e0c317c2229", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "175e7b6c1b396ca1fcdf74bd97b4f2f65b976c4d37101ddec38c9e0c317c2229", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "175e7b6c1b396ca1fcdf74bd97b4f2f65b976c4d37101ddec38c9e0c317c2229", kill_on_drop: false }`
[INFO] [stdout] 175e7b6c1b396ca1fcdf74bd97b4f2f65b976c4d37101ddec38c9e0c317c2229
[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] 265dd2195613e2998321cbc699acb8725520a807751339d2d2130057a7b6a9ee
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[INFO] [stdout] warning: unused imports: `BytesMut` and `Bytes`
[INFO] [stdout]   --> src/engine/io/row_formats/item_pointer.rs:11:26
[INFO] [stdout]    |
[INFO] [stdout] 11 | use bytes::{Buf, BufMut, Bytes, BytesMut};
[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: `std::convert::TryFrom`
[INFO] [stdout]   --> src/engine/io/row_formats/item_pointer.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::convert::TryFrom;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]   --> src/engine/io/visible_row_manager.rs:89:20
[INFO] [stdout]    |
[INFO] [stdout] 89 |                 Ok(o) => return Ok(true),
[INFO] [stdout]    |                    ^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `page_offset`
[INFO] [stdout]   --> src/engine/io/index_manager.rs:66:26
[INFO] [stdout]    |
[INFO] [stdout] 66 |         let (page_guard, page_offset, mut leaf) =
[INFO] [stdout]    |                          ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_page_offset`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `prior_offset` is assigned to, but never used
[INFO] [stdout]   --> src/engine/io/index_manager/find_leaf.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let mut prior_offset = PageOffset(0);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_prior_offset` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `prior_offset` is never read
[INFO] [stdout]   --> src/engine/io/index_manager/find_leaf.rs:60:21
[INFO] [stdout]    |
[INFO] [stdout] 60 |                     prior_offset = offset;
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]    --> src/engine/io/index_formats/btree_leaf.rs:146:25
[INFO] [stdout]     |
[INFO] [stdout] 146 |             .flat_map(|(k, v)| v.clone())
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/engine/objects/types/base_sql_types.rs:117:39
[INFO] [stdout]     |
[INFO] [stdout] 117 |             BaseSqlTypesMapper::Array(a) => todo!("Bed time, need to fix!"),
[INFO] [stdout]     |                                       ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `search` is never used
[INFO] [stdout]    --> src/engine/io/index_formats/btree_leaf.rs:140:12
[INFO] [stdout]     |
[INFO] [stdout]  30 | impl BTreeLeaf {
[INFO] [stdout]     | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 140 |     pub fn search<R>(&self, range: R) -> Vec<ItemPointer>
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_constraint` is never used
[INFO] [stdout]  --> src/engine/objects/constraints/parse_constraint.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn parse_constraint<'a, E: ParseError<&'a str> + ContextError<&'a str>>(
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `WhereEntry` is never used
[INFO] [stdout]   --> src/engine/objects/query_tree.rs:68:10
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub enum WhereEntry {}
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `file_manager` is never read
[INFO] [stdout]   --> src/feophant.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct FeOphant {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 28 |     file_manager: Arc<FileManager2>,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.deref()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/engine.rs:108:28
[INFO] [stdout]     |
[INFO] [stdout] 108 |         matches!(parse_tree.deref(), ParseTree::CreateTable(_))
[INFO] [stdout]     |                            ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `ParseTree` does not implement `Deref`, so calling `deref` on `&ParseTree` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 108 -         matches!(parse_tree.deref(), ParseTree::CreateTable(_))
[INFO] [stdout] 108 +         matches!(parse_tree, ParseTree::CreateTable(_))
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `ParseTree`, implement `Clone` for it
[INFO] [stdout]    --> src/engine/objects/parse_tree.rs:4:1
[INFO] [stdout]     |
[INFO] [stdout]   4 + #[derive(Clone)]
[INFO] [stdout]   5 | pub enum ParseTree {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/engine/io/page_formats/uint12.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         usize::try_from(self.0).unwrap()
[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 `feophant` (lib) due to 1 previous error; 13 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "265dd2195613e2998321cbc699acb8725520a807751339d2d2130057a7b6a9ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "265dd2195613e2998321cbc699acb8725520a807751339d2d2130057a7b6a9ee", kill_on_drop: false }`
[INFO] [stdout] 265dd2195613e2998321cbc699acb8725520a807751339d2d2130057a7b6a9ee
