[INFO] cloning repository https://github.com/shrenikbhatt/dmm-test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shrenikbhatt/dmm-test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshrenikbhatt%2Fdmm-test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshrenikbhatt%2Fdmm-test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] abcaaaa834daef7fb733d078f62dc6c4d411254e
[INFO] checking shrenikbhatt/dmm-test against master#7606c13961ddc1174b70638e934df0439b7dc515 for pr-121979
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshrenikbhatt%2Fdmm-test" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shrenikbhatt/dmm-test on toolchain 7606c13961ddc1174b70638e934df0439b7dc515
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7606c13961ddc1174b70638e934df0439b7dc515" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/shrenikbhatt/dmm-test
[INFO] finished tweaking git repo https://github.com/shrenikbhatt/dmm-test
[INFO] tweaked toml for git repo https://github.com/shrenikbhatt/dmm-test written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/shrenikbhatt/dmm-test 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" "+7606c13961ddc1174b70638e934df0439b7dc515" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking shrenikbhatt/dmm-test against try#ae973628c64ab60398819bcc1fd9f08ae68ad5b5 for pr-121979
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshrenikbhatt%2Fdmm-test" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shrenikbhatt/dmm-test on toolchain ae973628c64ab60398819bcc1fd9f08ae68ad5b5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ae973628c64ab60398819bcc1fd9f08ae68ad5b5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/shrenikbhatt/dmm-test
[INFO] finished tweaking git repo https://github.com/shrenikbhatt/dmm-test
[INFO] tweaked toml for git repo https://github.com/shrenikbhatt/dmm-test written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/shrenikbhatt/dmm-test 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" "+ae973628c64ab60398819bcc1fd9f08ae68ad5b5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking shrenikbhatt/dmm-test against try#ae973628c64ab60398819bcc1fd9f08ae68ad5b5 for pr-121979
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshrenikbhatt%2Fdmm-test" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shrenikbhatt/dmm-test on toolchain ae973628c64ab60398819bcc1fd9f08ae68ad5b5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ae973628c64ab60398819bcc1fd9f08ae68ad5b5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/shrenikbhatt/dmm-test
[INFO] finished tweaking git repo https://github.com/shrenikbhatt/dmm-test
[INFO] tweaked toml for git repo https://github.com/shrenikbhatt/dmm-test written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/shrenikbhatt/dmm-test 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" "+ae973628c64ab60398819bcc1fd9f08ae68ad5b5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ae973628c64ab60398819bcc1fd9f08ae68ad5b5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f7e416f1062478ff87e9b523d9c02bcc454607f99c2df05e15a4e5e1c7315c68
[INFO] running `Command { std: "docker" "start" "-a" "f7e416f1062478ff87e9b523d9c02bcc454607f99c2df05e15a4e5e1c7315c68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7e416f1062478ff87e9b523d9c02bcc454607f99c2df05e15a4e5e1c7315c68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7e416f1062478ff87e9b523d9c02bcc454607f99c2df05e15a4e5e1c7315c68", kill_on_drop: false }`
[INFO] [stdout] f7e416f1062478ff87e9b523d9c02bcc454607f99c2df05e15a4e5e1c7315c68
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "-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" "+ae973628c64ab60398819bcc1fd9f08ae68ad5b5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 33932d63e384bb1019f1529cd4f5205c5afd502eafc803abea1c93b5d08ba485
[INFO] running `Command { std: "docker" "start" "-a" "33932d63e384bb1019f1529cd4f5205c5afd502eafc803abea1c93b5d08ba485", kill_on_drop: false }`
[INFO] [stderr]     Checking allocators v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0635]: unknown feature `mutex_unlock`
[INFO] [stdout]  --> src/main.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(mutex_unlock)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `mutex_unlock`
[INFO] [stdout]  --> src/main.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(mutex_unlock)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `unlock` found for struct `Mutex` in the current scope
[INFO] [stdout]    --> src/buddy.rs:253:16
[INFO] [stdout]     |
[INFO] [stdout] 253 |         Mutex::unlock(alloc_mutex);
[INFO] [stdout]     |                ^^^^^^ function or associated item not found in `Mutex<_>`
[INFO] [stdout]     |
[INFO] [stdout] note: if you're trying to build a new `Mutex<_>`, consider using `Mutex::<T>::new` which returns `Mutex<_>`
[INFO] [stdout]    --> /rustc/ae973628c64ab60398819bcc1fd9f08ae68ad5b5/library/std/src/sync/mutex.rs:273:5
[INFO] [stdout] help: there is a method `lock` with a similar name, but with different arguments
[INFO] [stdout]    --> /rustc/ae973628c64ab60398819bcc1fd9f08ae68ad5b5/library/std/src/sync/mutex.rs:315:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `unlock` found for struct `Mutex` in the current scope
[INFO] [stdout]   --> src/main.rs:79:12
[INFO] [stdout]    |
[INFO] [stdout] 79 |     Mutex::unlock(alloc);
[INFO] [stdout]    |            ^^^^^^ function or associated item not found in `Mutex<_>`
[INFO] [stdout]    |
[INFO] [stdout] note: if you're trying to build a new `Mutex<_>`, consider using `Mutex::<T>::new` which returns `Mutex<_>`
[INFO] [stdout]   --> /rustc/ae973628c64ab60398819bcc1fd9f08ae68ad5b5/library/std/src/sync/mutex.rs:273:5
[INFO] [stdout] help: there is a method `lock` with a similar name, but with different arguments
[INFO] [stdout]   --> /rustc/ae973628c64ab60398819bcc1fd9f08ae68ad5b5/library/std/src/sync/mutex.rs:315:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `unlock` found for struct `Mutex` in the current scope
[INFO] [stdout]    --> src/buddy.rs:268:16
[INFO] [stdout]     |
[INFO] [stdout] 268 |         Mutex::unlock(alloc_mutex);
[INFO] [stdout]     |                ^^^^^^ function or associated item not found in `Mutex<_>`
[INFO] [stdout]     |
[INFO] [stdout] note: if you're trying to build a new `Mutex<_>`, consider using `Mutex::<T>::new` which returns `Mutex<_>`
[INFO] [stdout]    --> /rustc/ae973628c64ab60398819bcc1fd9f08ae68ad5b5/library/std/src/sync/mutex.rs:273:5
[INFO] [stdout] help: there is a method `lock` with a similar name, but with different arguments
[INFO] [stdout]    --> /rustc/ae973628c64ab60398819bcc1fd9f08ae68ad5b5/library/std/src/sync/mutex.rs:315:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `unlock` found for struct `Mutex` in the current scope
[INFO] [stdout]    --> src/buddy.rs:293:16
[INFO] [stdout]     |
[INFO] [stdout] 293 |         Mutex::unlock(alloc_mutex);
[INFO] [stdout]     |                ^^^^^^ function or associated item not found in `Mutex<_>`
[INFO] [stdout]     |
[INFO] [stdout] note: if you're trying to build a new `Mutex<_>`, consider using `Mutex::<T>::new` which returns `Mutex<_>`
[INFO] [stdout]    --> /rustc/ae973628c64ab60398819bcc1fd9f08ae68ad5b5/library/std/src/sync/mutex.rs:273:5
[INFO] [stdout] help: there is a method `lock` with a similar name, but with different arguments
[INFO] [stdout]    --> /rustc/ae973628c64ab60398819bcc1fd9f08ae68ad5b5/library/std/src/sync/mutex.rs:315:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `unlock` found for struct `Mutex` in the current scope
[INFO] [stdout]    --> src/buddy.rs:308:16
[INFO] [stdout]     |
[INFO] [stdout] 308 |         Mutex::unlock(alloc_mutex);
[INFO] [stdout]     |                ^^^^^^ function or associated item not found in `Mutex<_>`
[INFO] [stdout]     |
[INFO] [stdout] note: if you're trying to build a new `Mutex<_>`, consider using `Mutex::<T>::new` which returns `Mutex<_>`
[INFO] [stdout]    --> /rustc/ae973628c64ab60398819bcc1fd9f08ae68ad5b5/library/std/src/sync/mutex.rs:273:5
[INFO] [stdout] help: there is a method `lock` with a similar name, but with different arguments
[INFO] [stdout]    --> /rustc/ae973628c64ab60398819bcc1fd9f08ae68ad5b5/library/std/src/sync/mutex.rs:315:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `unlock` found for struct `Mutex` in the current scope
[INFO] [stdout]    --> src/buddy.rs:325:16
[INFO] [stdout]     |
[INFO] [stdout] 325 |         Mutex::unlock(alloc_mutex);
[INFO] [stdout]     |                ^^^^^^ function or associated item not found in `Mutex<_>`
[INFO] [stdout]     |
[INFO] [stdout] note: if you're trying to build a new `Mutex<_>`, consider using `Mutex::<T>::new` which returns `Mutex<_>`
[INFO] [stdout]    --> /rustc/ae973628c64ab60398819bcc1fd9f08ae68ad5b5/library/std/src/sync/mutex.rs:273:5
[INFO] [stdout] help: there is a method `lock` with a similar name, but with different arguments
[INFO] [stdout]    --> /rustc/ae973628c64ab60398819bcc1fd9f08ae68ad5b5/library/std/src/sync/mutex.rs:315:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `unlock` found for struct `Mutex` in the current scope
[INFO] [stdout]    --> src/buddy.rs:343:16
[INFO] [stdout]     |
[INFO] [stdout] 343 |         Mutex::unlock(alloc_mutex);
[INFO] [stdout]     |                ^^^^^^ function or associated item not found in `Mutex<_>`
[INFO] [stdout]     |
[INFO] [stdout] note: if you're trying to build a new `Mutex<_>`, consider using `Mutex::<T>::new` which returns `Mutex<_>`
[INFO] [stdout]    --> /rustc/ae973628c64ab60398819bcc1fd9f08ae68ad5b5/library/std/src/sync/mutex.rs:273:5
[INFO] [stdout] help: there is a method `lock` with a similar name, but with different arguments
[INFO] [stdout]    --> /rustc/ae973628c64ab60398819bcc1fd9f08ae68ad5b5/library/std/src/sync/mutex.rs:315:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `unlock` found for struct `Mutex` in the current scope
[INFO] [stdout]    --> src/buddy.rs:361:16
[INFO] [stdout]     |
[INFO] [stdout] 361 |         Mutex::unlock(alloc_mutex);
[INFO] [stdout]     |                ^^^^^^ function or associated item not found in `Mutex<_>`
[INFO] [stdout]     |
[INFO] [stdout] note: if you're trying to build a new `Mutex<_>`, consider using `Mutex::<T>::new` which returns `Mutex<_>`
[INFO] [stdout]    --> /rustc/ae973628c64ab60398819bcc1fd9f08ae68ad5b5/library/std/src/sync/mutex.rs:273:5
[INFO] [stdout] help: there is a method `lock` with a similar name, but with different arguments
[INFO] [stdout]    --> /rustc/ae973628c64ab60398819bcc1fd9f08ae68ad5b5/library/std/src/sync/mutex.rs:315:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `allocators` (bin "allocators") due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0599]: no function or associated item named `unlock` found for struct `Mutex` in the current scope
[INFO] [stdout]    --> src/segregated_free_list.rs:267:16
[INFO] [stdout]     |
[INFO] [stdout] 267 |         Mutex::unlock(alloc);
[INFO] [stdout]     |                ^^^^^^ function or associated item not found in `Mutex<_>`
[INFO] [stdout]     |
[INFO] [stdout] note: if you're trying to build a new `Mutex<_>`, consider using `Mutex::<T>::new` which returns `Mutex<_>`
[INFO] [stdout]    --> /rustc/ae973628c64ab60398819bcc1fd9f08ae68ad5b5/library/std/src/sync/mutex.rs:273:5
[INFO] [stdout] help: there is a method `lock` with a similar name, but with different arguments
[INFO] [stdout]    --> /rustc/ae973628c64ab60398819bcc1fd9f08ae68ad5b5/library/std/src/sync/mutex.rs:315:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `unlock` found for struct `Mutex` in the current scope
[INFO] [stdout]    --> src/segregated_free_list.rs:281:16
[INFO] [stdout]     |
[INFO] [stdout] 281 |         Mutex::unlock(alloc);
[INFO] [stdout]     |                ^^^^^^ function or associated item not found in `Mutex<_>`
[INFO] [stdout]     |
[INFO] [stdout] note: if you're trying to build a new `Mutex<_>`, consider using `Mutex::<T>::new` which returns `Mutex<_>`
[INFO] [stdout]    --> /rustc/ae973628c64ab60398819bcc1fd9f08ae68ad5b5/library/std/src/sync/mutex.rs:273:5
[INFO] [stdout] help: there is a method `lock` with a similar name, but with different arguments
[INFO] [stdout]    --> /rustc/ae973628c64ab60398819bcc1fd9f08ae68ad5b5/library/std/src/sync/mutex.rs:315:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `unlock` found for struct `Mutex` in the current scope
[INFO] [stdout]    --> src/segregated_free_list.rs:312:16
[INFO] [stdout]     |
[INFO] [stdout] 312 |         Mutex::unlock(alloc);
[INFO] [stdout]     |                ^^^^^^ function or associated item not found in `Mutex<_>`
[INFO] [stdout]     |
[INFO] [stdout] note: if you're trying to build a new `Mutex<_>`, consider using `Mutex::<T>::new` which returns `Mutex<_>`
[INFO] [stdout]    --> /rustc/ae973628c64ab60398819bcc1fd9f08ae68ad5b5/library/std/src/sync/mutex.rs:273:5
[INFO] [stdout] help: there is a method `lock` with a similar name, but with different arguments
[INFO] [stdout]    --> /rustc/ae973628c64ab60398819bcc1fd9f08ae68ad5b5/library/std/src/sync/mutex.rs:315:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `unlock` found for struct `Mutex` in the current scope
[INFO] [stdout]    --> src/segregated_free_list.rs:324:20
[INFO] [stdout]     |
[INFO] [stdout] 324 |             Mutex::unlock(alloc);
[INFO] [stdout]     |                    ^^^^^^ function or associated item not found in `Mutex<_>`
[INFO] [stdout]     |
[INFO] [stdout] note: if you're trying to build a new `Mutex<_>`, consider using `Mutex::<T>::new` which returns `Mutex<_>`
[INFO] [stdout]    --> /rustc/ae973628c64ab60398819bcc1fd9f08ae68ad5b5/library/std/src/sync/mutex.rs:273:5
[INFO] [stdout] help: there is a method `lock` with a similar name, but with different arguments
[INFO] [stdout]    --> /rustc/ae973628c64ab60398819bcc1fd9f08ae68ad5b5/library/std/src/sync/mutex.rs:315:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `unlock` found for struct `Mutex` in the current scope
[INFO] [stdout]    --> src/simple_segregated_storage.rs:178:16
[INFO] [stdout]     |
[INFO] [stdout] 178 |         Mutex::unlock(alloc);
[INFO] [stdout]     |                ^^^^^^ function or associated item not found in `Mutex<_>`
[INFO] [stdout]     |
[INFO] [stdout] note: if you're trying to build a new `Mutex<_>`, consider using `Mutex::<T>::new` which returns `Mutex<_>`
[INFO] [stdout]    --> /rustc/ae973628c64ab60398819bcc1fd9f08ae68ad5b5/library/std/src/sync/mutex.rs:273:5
[INFO] [stdout] help: there is a method `lock` with a similar name, but with different arguments
[INFO] [stdout]    --> /rustc/ae973628c64ab60398819bcc1fd9f08ae68ad5b5/library/std/src/sync/mutex.rs:315:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `unlock` found for struct `Mutex` in the current scope
[INFO] [stdout]   --> src/main.rs:79:12
[INFO] [stdout]    |
[INFO] [stdout] 79 |     Mutex::unlock(alloc);
[INFO] [stdout]    |            ^^^^^^ function or associated item not found in `Mutex<_>`
[INFO] [stdout]    |
[INFO] [stdout] note: if you're trying to build a new `Mutex<_>`, consider using `Mutex::<T>::new` which returns `Mutex<_>`
[INFO] [stdout]   --> /rustc/ae973628c64ab60398819bcc1fd9f08ae68ad5b5/library/std/src/sync/mutex.rs:273:5
[INFO] [stdout] help: there is a method `lock` with a similar name, but with different arguments
[INFO] [stdout]   --> /rustc/ae973628c64ab60398819bcc1fd9f08ae68ad5b5/library/std/src/sync/mutex.rs:315:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 14 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `allocators` (bin "allocators" test) due to 15 previous errors
[INFO] running `Command { std: "docker" "inspect" "33932d63e384bb1019f1529cd4f5205c5afd502eafc803abea1c93b5d08ba485", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33932d63e384bb1019f1529cd4f5205c5afd502eafc803abea1c93b5d08ba485", kill_on_drop: false }`
[INFO] [stdout] 33932d63e384bb1019f1529cd4f5205c5afd502eafc803abea1c93b5d08ba485