[INFO] fetching crate cifar-ten 0.2.1...
[INFO] checking cifar-ten-0.2.1 against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] extracting crate cifar-ten 0.2.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate cifar-ten 0.2.1 on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cifar-ten 0.2.1
[INFO] finished tweaking crates.io crate cifar-ten 0.2.1
[INFO] tweaked toml for crates.io crate cifar-ten 0.2.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate cifar-ten 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-complex v0.3.1
[INFO] [stderr]   Downloaded tar v0.4.30
[INFO] [stderr]   Downloaded futures-core v0.3.9
[INFO] [stderr]   Downloaded weezl v0.1.3
[INFO] [stderr]   Downloaded rand v0.8.1
[INFO] [stderr]   Downloaded keyboard-types v0.5.0
[INFO] [stderr]   Downloaded futures-io v0.3.9
[INFO] [stderr]   Downloaded sdl2-sys v0.34.3
[INFO] [stderr]   Downloaded sdl2 v0.34.3
[INFO] [stderr]   Downloaded futures-util v0.3.9
[INFO] [stderr]   Downloaded reqwest v0.11.0
[INFO] [stderr]   Downloaded pin-project-lite v0.2.3
[INFO] [stderr]   Downloaded futures-task v0.3.9
[INFO] [stderr]   Downloaded futures-sink v0.3.9
[INFO] [stderr]   Downloaded futures-channel v0.3.9
[INFO] [stderr]   Downloaded png v0.16.8
[INFO] [stderr]   Downloaded tokio-stream v0.1.1
[INFO] [stderr]   Downloaded image v0.23.12
[INFO] [stderr]   Downloaded ndarray v0.14.0
[INFO] [stderr]   Downloaded gif v0.11.1
[INFO] [stderr]   Downloaded bytemuck v1.4.1
[INFO] [stderr]   Downloaded show-image v0.6.5
[INFO] [stderr]   Downloaded tiff v0.6.1
[INFO] [stderr]   Downloaded jpeg-decoder v0.1.20
[INFO] [stderr]   Downloaded filetime v0.2.13
[INFO] [stderr]   Downloaded num-rational v0.3.2
[INFO] [stderr]   Downloaded version-compare v0.0.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3486e0860096232790c4a1e999431fbafcc4bad2b40828f26e16be1081e1cdbb
[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" "3486e0860096232790c4a1e999431fbafcc4bad2b40828f26e16be1081e1cdbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3486e0860096232790c4a1e999431fbafcc4bad2b40828f26e16be1081e1cdbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3486e0860096232790c4a1e999431fbafcc4bad2b40828f26e16be1081e1cdbb", kill_on_drop: false }`
[INFO] [stdout] 3486e0860096232790c4a1e999431fbafcc4bad2b40828f26e16be1081e1cdbb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 90bb133773b8b5c19b5c9a8d1135134b6a6a444ddd93f15bd2a915e0d460e5e8
[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" "90bb133773b8b5c19b5c9a8d1135134b6a6a444ddd93f15bd2a915e0d460e5e8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling getrandom v0.2.1
[INFO] [stderr]    Compiling ndarray v0.14.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking rand_core v0.6.1
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.1
[INFO] [stderr]     Checking cifar-ten v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:271:20
[INFO] [stdout]     |
[INFO] [stdout] 271 |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 272 | |                 "Label is {}, which is inconsistent with the CIFAR-10 scheme",
[INFO] [stdout] 273 | |                 label
[INFO] [stdout] 274 | |             ));
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 271 |             panic!(
[INFO] [stdout] 272 |                 "Label is {}, which is inconsistent with the CIFAR-10 scheme",
[INFO] [stdout] 273 |                 label
[INFO] [stdout] 274 |             );
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:271:20
[INFO] [stdout]     |
[INFO] [stdout] 271 |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 272 | |                 "Label is {}, which is inconsistent with the CIFAR-10 scheme",
[INFO] [stdout] 273 | |                 label
[INFO] [stdout] 274 | |             ));
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 271 |             panic!(
[INFO] [stdout] 272 |                 "Label is {}, which is inconsistent with the CIFAR-10 scheme",
[INFO] [stdout] 273 |                 label
[INFO] [stdout] 274 |             );
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.29s
[INFO] running `Command { std: "docker" "inspect" "90bb133773b8b5c19b5c9a8d1135134b6a6a444ddd93f15bd2a915e0d460e5e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90bb133773b8b5c19b5c9a8d1135134b6a6a444ddd93f15bd2a915e0d460e5e8", kill_on_drop: false }`
[INFO] [stdout] 90bb133773b8b5c19b5c9a8d1135134b6a6a444ddd93f15bd2a915e0d460e5e8