[INFO] fetching crate cnr 0.1.0...
[INFO] checking cnr-0.1.0 against master#b0696a5160711c068cb1f01b7437db7990d15750 for pr-121848
[INFO] extracting crate cnr 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate cnr 0.1.0 on toolchain b0696a5160711c068cb1f01b7437db7990d15750
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "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-4-tc1/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded parking_lot_core v0.2.14
[INFO] [stderr]   Downloaded generator v0.6.24
[INFO] [stderr]   Downloaded rustversion v1.0.4
[INFO] [stderr]   Downloaded arr_macro_impl v0.1.3
[INFO] [stderr]   Downloaded loom v0.4.0
[INFO] [stderr]   Downloaded syn v1.0.60
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.2
[INFO] [stderr]   Downloaded libc v0.2.86
[INFO] [stderr]   Downloaded chashmap v2.2.2
[INFO] [stderr]   Downloaded arr_macro v0.1.3
[INFO] [stderr]   Downloaded parking_lot v0.4.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 389da9aec7cbbb48d7b2f5507e70fb791e81e55bfc859db7b3637d5dcde1e611
[INFO] running `Command { std: "docker" "start" "-a" "389da9aec7cbbb48d7b2f5507e70fb791e81e55bfc859db7b3637d5dcde1e611", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "389da9aec7cbbb48d7b2f5507e70fb791e81e55bfc859db7b3637d5dcde1e611", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "389da9aec7cbbb48d7b2f5507e70fb791e81e55bfc859db7b3637d5dcde1e611", kill_on_drop: false }`
[INFO] [stdout] 389da9aec7cbbb48d7b2f5507e70fb791e81e55bfc859db7b3637d5dcde1e611
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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" "+b0696a5160711c068cb1f01b7437db7990d15750" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 351eeada59e22b2690ac38bbd9276d39e3089bc6081adc5579308f1ca8c4e1ea
[INFO] running `Command { std: "docker" "start" "-a" "351eeada59e22b2690ac38bbd9276d39e3089bc6081adc5579308f1ca8c4e1ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling memchr v2.4.0
[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 crossbeam-utils v0.8.2
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking crossbeam-queue v0.3.1
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking parking_lot v0.4.8
[INFO] [stderr]     Checking chashmap v2.2.2
[INFO] [stderr]     Checking env_logger v0.8.4
[INFO] [stderr]    Compiling arr_macro_impl v0.1.3
[INFO] [stderr]     Checking arr_macro v0.1.3
[INFO] [stderr]     Checking 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] warning: the item `Default` is imported redundantly
[INFO] [stdout]  --> src/context.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use core::default::Default;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Default` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Drop` is imported redundantly
[INFO] [stdout]   --> src/log.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 14 | use core::ops::{Drop, FnMut};
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]   --> /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Drop` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FnMut` is imported redundantly
[INFO] [stdout]   --> src/log.rs:14:23
[INFO] [stdout]    |
[INFO] [stdout] 14 | use core::ops::{Drop, FnMut};
[INFO] [stdout]    |                       ^^^^^
[INFO] [stdout]   --> /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FnMut` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[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] warning: the feature `try_reserve` has been stable since 1.57.0 and no longer requires an attribute to enable
[INFO] [stdout]    --> src/lib.rs:100:12
[INFO] [stdout]     |
[INFO] [stdout] 100 | #![feature(try_reserve)]
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Default` is imported redundantly
[INFO] [stdout]  --> src/context.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use core::default::Default;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Default` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Drop` is imported redundantly
[INFO] [stdout]   --> src/log.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 14 | use core::ops::{Drop, FnMut};
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]   --> /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Drop` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FnMut` is imported redundantly
[INFO] [stdout]   --> src/log.rs:14:23
[INFO] [stdout]    |
[INFO] [stdout] 14 | use core::ops::{Drop, FnMut};
[INFO] [stdout]    |                       ^^^^^
[INFO] [stdout]   --> /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FnMut` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]    --> src/log.rs:853:9
[INFO] [stdout]     |
[INFO] [stdout] 852 |     use super::*;
[INFO] [stdout]     |         -------- the item `Arc` is already imported here
[INFO] [stdout] 853 |     use std::sync::Arc;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `try_reserve` has been stable since 1.57.0 and no longer requires an attribute to enable
[INFO] [stdout]    --> src/lib.rs:100:12
[INFO] [stdout]     |
[INFO] [stdout] 100 | #![feature(try_reserve)]
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cnr` (lib) due to 2 previous errors; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 1 previous error; 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cnr` (lib test) due to 2 previous errors; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "351eeada59e22b2690ac38bbd9276d39e3089bc6081adc5579308f1ca8c4e1ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "351eeada59e22b2690ac38bbd9276d39e3089bc6081adc5579308f1ca8c4e1ea", kill_on_drop: false }`
[INFO] [stdout] 351eeada59e22b2690ac38bbd9276d39e3089bc6081adc5579308f1ca8c4e1ea
[INFO] checking cnr-0.1.0 against try#bfe97fcae016881ad333f0ff8cea2cadb9cf136c for pr-121848
[INFO] extracting crate cnr 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate cnr 0.1.0 on toolchain bfe97fcae016881ad333f0ff8cea2cadb9cf136c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "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-4-tc2/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4b4cbffe70e151e8121fd4501057e9ac22fec47f674cad5079fb3811e99d0a00
[INFO] running `Command { std: "docker" "start" "-a" "4b4cbffe70e151e8121fd4501057e9ac22fec47f674cad5079fb3811e99d0a00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4b4cbffe70e151e8121fd4501057e9ac22fec47f674cad5079fb3811e99d0a00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b4cbffe70e151e8121fd4501057e9ac22fec47f674cad5079fb3811e99d0a00", kill_on_drop: false }`
[INFO] [stdout] 4b4cbffe70e151e8121fd4501057e9ac22fec47f674cad5079fb3811e99d0a00
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d2d64e9e3f9e43309c0176211737ffdb18068deb69be032620dcff7384e4490
[INFO] running `Command { std: "docker" "start" "-a" "8d2d64e9e3f9e43309c0176211737ffdb18068deb69be032620dcff7384e4490", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling crossbeam-utils v0.8.2
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking crossbeam-queue v0.3.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking parking_lot v0.4.8
[INFO] [stderr]     Checking chashmap v2.2.2
[INFO] [stderr]     Checking env_logger v0.8.4
[INFO] [stderr]    Compiling arr_macro_impl v0.1.3
[INFO] [stderr]     Checking arr_macro v0.1.3
[INFO] [stderr]     Checking 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] warning: the item `Default` is imported redundantly
[INFO] [stdout]  --> src/context.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use core::default::Default;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Default` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Drop` is imported redundantly
[INFO] [stdout]   --> src/log.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 14 | use core::ops::{Drop, FnMut};
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]   --> /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Drop` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FnMut` is imported redundantly
[INFO] [stdout]   --> src/log.rs:14:23
[INFO] [stdout]    |
[INFO] [stdout] 14 | use core::ops::{Drop, FnMut};
[INFO] [stdout]    |                       ^^^^^
[INFO] [stdout]   --> /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FnMut` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[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] warning: the feature `try_reserve` has been stable since 1.57.0 and no longer requires an attribute to enable
[INFO] [stdout]    --> src/lib.rs:100:12
[INFO] [stdout]     |
[INFO] [stdout] 100 | #![feature(try_reserve)]
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Default` is imported redundantly
[INFO] [stdout]  --> src/context.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use core::default::Default;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Default` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Drop` is imported redundantly
[INFO] [stdout]   --> src/log.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 14 | use core::ops::{Drop, FnMut};
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]   --> /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Drop` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FnMut` is imported redundantly
[INFO] [stdout]   --> src/log.rs:14:23
[INFO] [stdout]    |
[INFO] [stdout] 14 | use core::ops::{Drop, FnMut};
[INFO] [stdout]    |                       ^^^^^
[INFO] [stdout]   --> /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FnMut` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]    --> src/log.rs:853:9
[INFO] [stdout]     |
[INFO] [stdout] 852 |     use super::*;
[INFO] [stdout]     |         -------- the item `Arc` is already imported here
[INFO] [stdout] 853 |     use std::sync::Arc;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `try_reserve` has been stable since 1.57.0 and no longer requires an attribute to enable
[INFO] [stdout]    --> src/lib.rs:100:12
[INFO] [stdout]     |
[INFO] [stdout] 100 | #![feature(try_reserve)]
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cnr` (lib) due to 2 previous errors; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 1 previous error; 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cnr` (lib test) due to 2 previous errors; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "8d2d64e9e3f9e43309c0176211737ffdb18068deb69be032620dcff7384e4490", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d2d64e9e3f9e43309c0176211737ffdb18068deb69be032620dcff7384e4490", kill_on_drop: false }`
[INFO] [stdout] 8d2d64e9e3f9e43309c0176211737ffdb18068deb69be032620dcff7384e4490
