[INFO] cloning repository https://github.com/Rahulwagh07/rust-practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Rahulwagh07/rust-practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRahulwagh07%2Frust-practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRahulwagh07%2Frust-practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c3d430cd05e6ccdcdb03d25e8c4b77bda7715391
[INFO] checking Rahulwagh07/rust-practice against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRahulwagh07%2Frust-practice" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Rahulwagh07/rust-practice on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Rahulwagh07/rust-practice
[INFO] finished tweaking git repo https://github.com/Rahulwagh07/rust-practice
[INFO] tweaked toml for git repo https://github.com/Rahulwagh07/rust-practice written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Rahulwagh07/rust-practice 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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4582b4657b2ee69d45d9c58a36f06f7c5ff12a7743cf607a24279db9ec8bbd55
[INFO] running `Command { std: "docker" "start" "-a" "4582b4657b2ee69d45d9c58a36f06f7c5ff12a7743cf607a24279db9ec8bbd55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4582b4657b2ee69d45d9c58a36f06f7c5ff12a7743cf607a24279db9ec8bbd55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4582b4657b2ee69d45d9c58a36f06f7c5ff12a7743cf607a24279db9ec8bbd55", kill_on_drop: false }`
[INFO] [stdout] 4582b4657b2ee69d45d9c58a36f06f7c5ff12a7743cf607a24279db9ec8bbd55
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 66ba6760c7d4c9337d8c22f1460eb2471c8d35639cec135d5ac7152849afc1b0
[INFO] running `Command { std: "docker" "start" "-a" "66ba6760c7d4c9337d8c22f1460eb2471c8d35639cec135d5ac7152849afc1b0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.72
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rustprograms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `core::num`
[INFO] [stdout]  --> src/hashmap.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::num;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Keys`, `Values`, and `hash::Hash`
[INFO] [stdout]  --> src/hashmap.rs:2:37
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{collections::{btree_map::{Keys, Values}, HashMap}, hash::Hash, io::{self, Write}};
[INFO] [stdout]   |                                     ^^^^  ^^^^^^             ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::num`
[INFO] [stdout]  --> src/hashmap.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::num;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Keys`, `Values`, and `hash::Hash`
[INFO] [stdout]  --> src/hashmap.rs:2:37
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{collections::{btree_map::{Keys, Values}, HashMap}, hash::Hash, io::{self, Write}};
[INFO] [stdout]   |                                     ^^^^  ^^^^^^             ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.62s
[INFO] running `Command { std: "docker" "inspect" "66ba6760c7d4c9337d8c22f1460eb2471c8d35639cec135d5ac7152849afc1b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66ba6760c7d4c9337d8c22f1460eb2471c8d35639cec135d5ac7152849afc1b0", kill_on_drop: false }`
[INFO] [stdout] 66ba6760c7d4c9337d8c22f1460eb2471c8d35639cec135d5ac7152849afc1b0
[INFO] checking Rahulwagh07/rust-practice against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRahulwagh07%2Frust-practice" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Rahulwagh07/rust-practice on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Rahulwagh07/rust-practice
[INFO] finished tweaking git repo https://github.com/Rahulwagh07/rust-practice
[INFO] tweaked toml for git repo https://github.com/Rahulwagh07/rust-practice written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Rahulwagh07/rust-practice 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" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 317337b63d6b000dff2d4e1790e8405a312252e04c3a960d75b86ae81b3d8d11
[INFO] running `Command { std: "docker" "start" "-a" "317337b63d6b000dff2d4e1790e8405a312252e04c3a960d75b86ae81b3d8d11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "317337b63d6b000dff2d4e1790e8405a312252e04c3a960d75b86ae81b3d8d11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "317337b63d6b000dff2d4e1790e8405a312252e04c3a960d75b86ae81b3d8d11", kill_on_drop: false }`
[INFO] [stdout] 317337b63d6b000dff2d4e1790e8405a312252e04c3a960d75b86ae81b3d8d11
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 41e09b2652a2c7bc3ef9d735d09419443114aad923cdc2bd39c6a938fb9c98b4
[INFO] running `Command { std: "docker" "start" "-a" "41e09b2652a2c7bc3ef9d735d09419443114aad923cdc2bd39c6a938fb9c98b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.72
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rustprograms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `core::num`
[INFO] [stdout]  --> src/hashmap.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::num;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Keys`, `Values`, and `hash::Hash`
[INFO] [stdout]  --> src/hashmap.rs:2:37
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{collections::{btree_map::{Keys, Values}, HashMap}, hash::Hash, io::{self, Write}};
[INFO] [stdout]   |                                     ^^^^  ^^^^^^             ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::num`
[INFO] [stdout]  --> src/hashmap.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::num;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Keys`, `Values`, and `hash::Hash`
[INFO] [stdout]  --> src/hashmap.rs:2:37
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{collections::{btree_map::{Keys, Values}, HashMap}, hash::Hash, io::{self, Write}};
[INFO] [stdout]   |                                     ^^^^  ^^^^^^             ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.02s
[INFO] running `Command { std: "docker" "inspect" "41e09b2652a2c7bc3ef9d735d09419443114aad923cdc2bd39c6a938fb9c98b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41e09b2652a2c7bc3ef9d735d09419443114aad923cdc2bd39c6a938fb9c98b4", kill_on_drop: false }`
[INFO] [stdout] 41e09b2652a2c7bc3ef9d735d09419443114aad923cdc2bd39c6a938fb9c98b4