[INFO] cloning repository https://github.com/esqu1/too-many-ray-tracers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/esqu1/too-many-ray-tracers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fesqu1%2Ftoo-many-ray-tracers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fesqu1%2Ftoo-many-ray-tracers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 44355c0fdd62b5be0a15e616f9adb7295b4f0aa9
[INFO] checking esqu1/too-many-ray-tracers against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fesqu1%2Ftoo-many-ray-tracers" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/esqu1/too-many-ray-tracers on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/esqu1/too-many-ray-tracers
[INFO] finished tweaking git repo https://github.com/esqu1/too-many-ray-tracers
[INFO] tweaked toml for git repo https://github.com/esqu1/too-many-ray-tracers written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/esqu1/too-many-ray-tracers 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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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_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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 219c4db60bcba3e2bf7ea3f7ad3f5efcfc7fda811ac36fe55eddfc433bb83ff1
[INFO] running `Command { std: "docker" "start" "-a" "219c4db60bcba3e2bf7ea3f7ad3f5efcfc7fda811ac36fe55eddfc433bb83ff1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "219c4db60bcba3e2bf7ea3f7ad3f5efcfc7fda811ac36fe55eddfc433bb83ff1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "219c4db60bcba3e2bf7ea3f7ad3f5efcfc7fda811ac36fe55eddfc433bb83ff1", kill_on_drop: false }`
[INFO] [stdout] 219c4db60bcba3e2bf7ea3f7ad3f5efcfc7fda811ac36fe55eddfc433bb83ff1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee193659370926b73d2cd92ae90a1728cf4e644efd2b9121f23d88fd1bbd45af
[INFO] running `Command { std: "docker" "start" "-a" "ee193659370926b73d2cd92ae90a1728cf4e644efd2b9121f23d88fd1bbd45af", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling portable-atomic v0.3.19
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]     Checking number_prefix v0.4.0
[INFO] [stderr]     Checking matrixmultiply v0.2.3
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking console v0.15.5
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking indicatif v0.17.3
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking too-many-ray-tracers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0635]: unknown feature `mutex_unlock`
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(mutex_unlock)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `mutex_unlock`
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![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/camera.rs:65:16
[INFO] [stdout]    |
[INFO] [stdout] 65 |         Mutex::unlock(img_lock);
[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/af4a5a13a15fa0c60e06321077ef452f769b42fd/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/af4a5a13a15fa0c60e06321077ef452f769b42fd/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/camera.rs:65:16
[INFO] [stdout]    |
[INFO] [stdout] 65 |         Mutex::unlock(img_lock);
[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/af4a5a13a15fa0c60e06321077ef452f769b42fd/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/af4a5a13a15fa0c60e06321077ef452f769b42fd/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/camera.rs:90:16
[INFO] [stdout]    |
[INFO] [stdout] 90 |         Mutex::unlock(img_lock);
[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/af4a5a13a15fa0c60e06321077ef452f769b42fd/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/af4a5a13a15fa0c60e06321077ef452f769b42fd/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/camera.rs:90:16
[INFO] [stdout]    |
[INFO] [stdout] 90 |         Mutex::unlock(img_lock);
[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/af4a5a13a15fa0c60e06321077ef452f769b42fd/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/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/sync/mutex.rs:315:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0599`.
[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 `too-many-ray-tracers` (bin "too-many-ray-tracers") due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `too-many-ray-tracers` (bin "too-many-ray-tracers" test) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "ee193659370926b73d2cd92ae90a1728cf4e644efd2b9121f23d88fd1bbd45af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee193659370926b73d2cd92ae90a1728cf4e644efd2b9121f23d88fd1bbd45af", kill_on_drop: false }`
[INFO] [stdout] ee193659370926b73d2cd92ae90a1728cf4e644efd2b9121f23d88fd1bbd45af