[INFO] fetching crate cnr 0.1.0...
[INFO] testing cnr-0.1.0 against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] extracting crate cnr 0.1.0 into /workspace/builds/worker-29/source
[INFO] validating manifest of crates.io crate cnr 0.1.0 on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cnr 0.1.0
[INFO] finished tweaking crates.io crate cnr 0.1.0
[INFO] tweaked toml for crates.io crate cnr 0.1.0 written to /workspace/builds/worker-29/source/Cargo.toml
[INFO] crate crates.io crate cnr 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crossbeam-queue v0.3.1
[INFO] [stderr]   Downloaded chashmap v2.2.2
[INFO] [stderr]   Downloaded rustversion v1.0.4
[INFO] [stderr]   Downloaded arr_macro_impl v0.1.3
[INFO] [stderr]   Downloaded generator v0.6.24
[INFO] [stderr]   Downloaded arr_macro v0.1.3
[INFO] [stderr]   Downloaded loom v0.4.0
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc63f531c76f902c6e0706fb1e3f666f4d6bff648310dd61a7a385720a686f7b
[INFO] running `Command { std: "docker" "start" "-a" "cc63f531c76f902c6e0706fb1e3f666f4d6bff648310dd61a7a385720a686f7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc63f531c76f902c6e0706fb1e3f666f4d6bff648310dd61a7a385720a686f7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc63f531c76f902c6e0706fb1e3f666f4d6bff648310dd61a7a385720a686f7b", kill_on_drop: false }`
[INFO] [stdout] cc63f531c76f902c6e0706fb1e3f666f4d6bff648310dd61a7a385720a686f7b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b3df4fea89f4f93127c0b18519a8d900b87d5c0de8e61084f82a0f6e231baa10
[INFO] running `Command { std: "docker" "start" "-a" "b3df4fea89f4f93127c0b18519a8d900b87d5c0de8e61084f82a0f6e231baa10", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling arr_macro_impl v0.1.3
[INFO] [stderr]    Compiling arr_macro v0.1.3
[INFO] [stderr]    Compiling cnr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: could not find `prelude` in `alloc`
[INFO] [stdout]  --> src/log.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | use alloc::prelude::v1::Box;
[INFO] [stdout]   |            ^^^^^^^ could not find `prelude` in `alloc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Box` in this scope
[INFO] [stdout]    --> src/log.rs:165:20
[INFO] [stdout]     |
[INFO] [stdout] 165 |     gc: UnsafeCell<Box<CallbackFn>>,
[INFO] [stdout]     |                    ^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 4   | use alloc::boxed::Box;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Box`
[INFO] [stdout]    --> src/log.rs:293:33
[INFO] [stdout]     |
[INFO] [stdout] 293 |             gc: UnsafeCell::new(Box::new(
[INFO] [stdout]     |                                 ^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 4   | use alloc::boxed::Box;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Box`
[INFO] [stdout]    --> src/log.rs:338:35
[INFO] [stdout]     |
[INFO] [stdout] 338 |         unsafe { *self.gc.get() = Box::new(gc) };
[INFO] [stdout]     |                                   ^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 4   | use alloc::boxed::Box;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0412, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cnr` due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "b3df4fea89f4f93127c0b18519a8d900b87d5c0de8e61084f82a0f6e231baa10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3df4fea89f4f93127c0b18519a8d900b87d5c0de8e61084f82a0f6e231baa10", kill_on_drop: false }`
[INFO] [stdout] b3df4fea89f4f93127c0b18519a8d900b87d5c0de8e61084f82a0f6e231baa10