[INFO] crate alloc_counter 0.0.4 is already in cache
[INFO] checking alloc_counter-0.0.4 against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] extracting crate alloc_counter 0.0.4 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate alloc_counter 0.0.4 on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1/source/rust-toolchain
[INFO] started tweaking crates.io crate alloc_counter 0.0.4
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate alloc_counter 0.0.4
[INFO] tweaked toml for crates.io crate alloc_counter 0.0.4 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate alloc_counter 0.0.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3370de9d6640ee47735f651c96973c47d4d624bdb8452120b88a523ed87a0b0e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3370de9d6640ee47735f651c96973c47d4d624bdb8452120b88a523ed87a0b0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3370de9d6640ee47735f651c96973c47d4d624bdb8452120b88a523ed87a0b0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3370de9d6640ee47735f651c96973c47d4d624bdb8452120b88a523ed87a0b0e", kill_on_drop: false }`
[INFO] [stdout] 3370de9d6640ee47735f651c96973c47d4d624bdb8452120b88a523ed87a0b0e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 58b5a600bdf2fa77d2ef0c527d8c1702a10483d99d6737b278dcdb2d6814fce6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "58b5a600bdf2fa77d2ef0c527d8c1702a10483d99d6737b278dcdb2d6814fce6", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.9
[INFO] [stderr]     Checking pin-utils v0.1.0-alpha.4
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking futures-task v0.3.1
[INFO] [stderr]     Checking futures-core v0.3.1
[INFO] [stderr]     Checking futures-util v0.3.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking futures-executor v0.3.1
[INFO] [stderr]    Compiling alloc_counter_macro v0.0.2
[INFO] [stderr]     Checking alloc_counter v0.0.4 (/tmp/fixit)
[INFO] [stderr]    Migrating src/lib.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating tests/panic_on_alloc.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating tests/no_alloc_macro.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating tests/counters.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/count_alloc_macro.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating tests/futures.rs from 2018 edition to 2021
[INFO] [stderr] warning: failed to automatically apply fixes suggested by rustc to crate `no_alloc_macro`
[INFO] [stderr] 
[INFO] [stderr] after fixes were automatically applied the compiler reported errors within these files:
[INFO] [stderr] 
[INFO] [stderr]   * tests/no_alloc_macro.rs
[INFO] [stderr] 
[INFO] [stderr] This likely indicates a bug in either rustc or cargo itself,
[INFO] [stderr] and we would appreciate a bug report! You're likely to see 
[INFO] [stderr] a number of compiler warnings after this message which cargo
[INFO] [stderr] attempted to fix but failed. If you could open an issue at
[INFO] [stderr] https://github.com/rust-lang/rust/issues
[INFO] [stderr] quoting the full output of this command we'd be very appreciative!
[INFO] [stderr] Note that you may be able to make some more progress in the near-term
[INFO] [stderr] fixing code with the `--broken-code` flag
[INFO] [stderr] 
[INFO] [stderr] The following errors were reported:
[INFO] [stderr] error[E0384]: cannot assign twice to immutable variable `a`
[INFO] [stderr]   --> tests/no_alloc_macro.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 57 |     fn baz(self, a: usize) -> usize {
[INFO] [stderr]    |                  -
[INFO] [stderr]    |                  |
[INFO] [stderr]    |                  first assignment to `a`
[INFO] [stderr]    |                  help: consider making this binding mutable: `mut a`
[INFO] [stderr] 58 |         a += 1;
[INFO] [stderr]    |         ^^^^^^ cannot assign twice to immutable variable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0384`.
[INFO] [stderr] Original diagnostics will follow.
[INFO] [stderr] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/no_alloc_macro.rs:57:18
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn baz(self, mut a: usize) -> usize {
[INFO] [stdout]    |                  ----^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.94s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Checking alloc_counter v0.0.4 (/tmp/fixit)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/no_alloc_macro.rs:57:18
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn baz(self, mut a: usize) -> usize {
[INFO] [stdout]    |                  ----^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "58b5a600bdf2fa77d2ef0c527d8c1702a10483d99d6737b278dcdb2d6814fce6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58b5a600bdf2fa77d2ef0c527d8c1702a10483d99d6737b278dcdb2d6814fce6", kill_on_drop: false }`
[INFO] [stdout] 58b5a600bdf2fa77d2ef0c527d8c1702a10483d99d6737b278dcdb2d6814fce6