[INFO] cloning repository https://github.com/h-lavaei/rust-core-utils
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/h-lavaei/rust-core-utils" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fh-lavaei%2Frust-core-utils", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fh-lavaei%2Frust-core-utils'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d7a0b81ccd513d02033e9b7a8bcef0aa458ad54c
[INFO] testing h-lavaei/rust-core-utils against master#414482f6a0d4e7290f614300581a0b55442552a3 for pr-140985
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fh-lavaei%2Frust-core-utils" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/h-lavaei/rust-core-utils on toolchain 414482f6a0d4e7290f614300581a0b55442552a3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+414482f6a0d4e7290f614300581a0b55442552a3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/h-lavaei/rust-core-utils
[INFO] finished tweaking git repo https://github.com/h-lavaei/rust-core-utils
[INFO] tweaked toml for git repo https://github.com/h-lavaei/rust-core-utils written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/h-lavaei/rust-core-utils 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" "+414482f6a0d4e7290f614300581a0b55442552a3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+414482f6a0d4e7290f614300581a0b55442552a3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9eada5435fe86bbd225544346dd45ebf0dcfdea6403cf28c08cad7d78c7e1d2c
[INFO] running `Command { std: "docker" "start" "-a" "9eada5435fe86bbd225544346dd45ebf0dcfdea6403cf28c08cad7d78c7e1d2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9eada5435fe86bbd225544346dd45ebf0dcfdea6403cf28c08cad7d78c7e1d2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9eada5435fe86bbd225544346dd45ebf0dcfdea6403cf28c08cad7d78c7e1d2c", kill_on_drop: false }`
[INFO] [stdout] 9eada5435fe86bbd225544346dd45ebf0dcfdea6403cf28c08cad7d78c7e1d2c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+414482f6a0d4e7290f614300581a0b55442552a3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df537c95a092eaf745c2b83173e208a6840f87f4d88c6855dc7aacbef3957c0d
[INFO] running `Command { std: "docker" "start" "-a" "df537c95a092eaf745c2b83173e208a6840f87f4d88c6855dc7aacbef3957c0d", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-core-utils v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]  --> src/lib.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut result = String::new();
[INFO] [stdout]   |             ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "df537c95a092eaf745c2b83173e208a6840f87f4d88c6855dc7aacbef3957c0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df537c95a092eaf745c2b83173e208a6840f87f4d88c6855dc7aacbef3957c0d", kill_on_drop: false }`
[INFO] [stdout] df537c95a092eaf745c2b83173e208a6840f87f4d88c6855dc7aacbef3957c0d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+414482f6a0d4e7290f614300581a0b55442552a3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9bfba2204e6732a308f365fb4d4ebb3f4a7af4603dd047616549633ad0df2cd8
[INFO] running `Command { std: "docker" "start" "-a" "9bfba2204e6732a308f365fb4d4ebb3f4a7af4603dd047616549633ad0df2cd8", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-core-utils v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]  --> src/lib.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut result = String::new();
[INFO] [stdout]   |             ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]  --> src/lib.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut result = String::new();
[INFO] [stdout]   |             ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "9bfba2204e6732a308f365fb4d4ebb3f4a7af4603dd047616549633ad0df2cd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bfba2204e6732a308f365fb4d4ebb3f4a7af4603dd047616549633ad0df2cd8", kill_on_drop: false }`
[INFO] [stdout] 9bfba2204e6732a308f365fb4d4ebb3f4a7af4603dd047616549633ad0df2cd8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+414482f6a0d4e7290f614300581a0b55442552a3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d6faf9cd3abd69b8d41fc3bc1b25ac6a902c861a9962714ac2a270dcc3b26d00
[INFO] running `Command { std: "docker" "start" "-a" "d6faf9cd3abd69b8d41fc3bc1b25ac6a902c861a9962714ac2a270dcc3b26d00", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `result` is never read
[INFO] [stderr]  --> src/lib.rs:5:13
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let mut result = String::new();
[INFO] [stderr]   |             ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-core-utils` (lib) generated 1 warning
[INFO] [stderr] warning: `rust-core-utils` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rust_core_utils-f4398c5f96c80b09)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_core_utils-f92353626c484ecd)
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rust_core_utils
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d6faf9cd3abd69b8d41fc3bc1b25ac6a902c861a9962714ac2a270dcc3b26d00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6faf9cd3abd69b8d41fc3bc1b25ac6a902c861a9962714ac2a270dcc3b26d00", kill_on_drop: false }`
[INFO] [stdout] d6faf9cd3abd69b8d41fc3bc1b25ac6a902c861a9962714ac2a270dcc3b26d00