[INFO] fetching crate linhash 0.4.0...
[INFO] fixing linhash-0.4.0 against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=start=2015 for pr-157817-2
[INFO] extracting crate linhash 0.4.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate linhash 0.4.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate linhash 0.4.0
[INFO] tweaked toml for crates.io crate linhash 0.4.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate linhash 0.4.0 on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate linhash 0.4.0 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" "+622891a4e29178280638a6b63a8908bde2c0c854" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] f1a436024e33deffda191c813bf00c10eb497117559ba5e16003a7d25058dbb2
[INFO] running `Command { std: "docker" "start" "f1a436024e33deffda191c813bf00c10eb497117559ba5e16003a7d25058dbb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f1a436024e33deffda191c813bf00c10eb497117559ba5e16003a7d25058dbb2" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1a436024e33deffda191c813bf00c10eb497117559ba5e16003a7d25058dbb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=" "-e" "RUSTDOCFLAGS=" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f1a436024e33deffda191c813bf00c10eb497117559ba5e16003a7d25058dbb2" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fix" "--allow-no-vcs" "--allow-dirty" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zfix-edition=start=2015", kill_on_drop: false }`
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[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/device/io.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let mut flags = ReadWriteFlags::empty();
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `try_read_lock`, `try_selective_lock`, and `try_exclusive_lock` are never used
[INFO] [stdout]   --> src/lock.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl StripeLock {
[INFO] [stdout]    | --------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub fn try_read_lock(&self, id: u64) -> Option<ReadLockGuard<'_>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 55 |     pub fn try_selective_lock(&self, id: u64) -> Option<SelectiveLockGuard<'_>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 73 |     pub fn try_exclusive_lock(&self, id: u64) -> Option<ExclusiveLockGuard<'_>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `g1`
[INFO] [stdout]   --> src/lock.rs:89:13
[INFO] [stdout]    |
[INFO] [stdout] 89 |         let g1 = lock.read_lock(0);
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_g1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `g2`
[INFO] [stdout]   --> src/lock.rs:90:13
[INFO] [stdout]    |
[INFO] [stdout] 90 |         let g2 = lock.read_lock(0);
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_g2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `g1`
[INFO] [stdout]   --> src/lock.rs:96:13
[INFO] [stdout]    |
[INFO] [stdout] 96 |         let g1 = lock.selective_lock(0);
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_g1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `g2`
[INFO] [stdout]   --> src/lock.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let g2 = lock.read_lock(0);
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_g2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `g1`
[INFO] [stdout]    --> src/lock.rs:103:13
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let g1 = lock.selective_lock(0);
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_g1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `g1`
[INFO] [stdout]    --> src/lock.rs:111:13
[INFO] [stdout]     |
[INFO] [stdout] 111 |         let g1 = lock.selective_lock(0);
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_g1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `g1`
[INFO] [stdout]    --> src/lock.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |         let g1 = lock.exclusive_lock(0);
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_g1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/device/io.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let mut flags = ReadWriteFlags::empty();
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `map_test_generator`
[INFO] [stdout]  --> tests/reference.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use map_test_generator::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `map_test_generator`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `map_test_generator`, use `cargo add map_test_generator` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `try_read_lock` is never used
[INFO] [stdout]   --> src/lock.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl StripeLock {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub fn try_read_lock(&self, id: u64) -> Option<ReadLockGuard<'_>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `linhash` (test "reference") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "f1a436024e33deffda191c813bf00c10eb497117559ba5e16003a7d25058dbb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1a436024e33deffda191c813bf00c10eb497117559ba5e16003a7d25058dbb2", kill_on_drop: false }`
[INFO] [stdout] f1a436024e33deffda191c813bf00c10eb497117559ba5e16003a7d25058dbb2
