[INFO] fetching crate blockchain-base 0.1.0...
[INFO] testing blockchain-base-0.1.0 against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] extracting crate blockchain-base 0.1.0 into /workspace/builds/worker-101/source
[INFO] validating manifest of crates.io crate blockchain-base 0.1.0 on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate blockchain-base 0.1.0
[INFO] finished tweaking crates.io crate blockchain-base 0.1.0
[INFO] tweaked toml for crates.io crate blockchain-base 0.1.0 written to /workspace/builds/worker-101/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/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" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 98447e7362713d8020e42c3b0fe90b8f64b657fec1458063f43b92f2edeca7d8
[INFO] running `Command { std: "docker" "start" "-a" "98447e7362713d8020e42c3b0fe90b8f64b657fec1458063f43b92f2edeca7d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "98447e7362713d8020e42c3b0fe90b8f64b657fec1458063f43b92f2edeca7d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98447e7362713d8020e42c3b0fe90b8f64b657fec1458063f43b92f2edeca7d8", kill_on_drop: false }`
[INFO] [stdout] 98447e7362713d8020e42c3b0fe90b8f64b657fec1458063f43b92f2edeca7d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/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" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b6ef307fdef4a81d0e66306e268a1933dcf7e25d51b033d5a205e5888251f531
[INFO] running `Command { std: "docker" "start" "-a" "b6ef307fdef4a81d0e66306e268a1933dcf7e25d51b033d5a205e5888251f531", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.22
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]    Compiling foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling hex v0.3.2
[INFO] [stderr]    Compiling foreign-types v0.3.2
[INFO] [stderr]    Compiling openssl-sys v0.9.71
[INFO] [stderr]    Compiling crypto-hash v0.3.4
[INFO] [stderr]    Compiling blockchain-base v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/blockchainblock.rs:252:9
[INFO] [stdout]     |
[INFO] [stdout] 252 |         &self.curr_hash.copy_from_slice(&digest);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 252 |         let _ = &self.curr_hash.copy_from_slice(&digest);
[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 11.53s
[INFO] running `Command { std: "docker" "inspect" "b6ef307fdef4a81d0e66306e268a1933dcf7e25d51b033d5a205e5888251f531", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6ef307fdef4a81d0e66306e268a1933dcf7e25d51b033d5a205e5888251f531", kill_on_drop: false }`
[INFO] [stdout] b6ef307fdef4a81d0e66306e268a1933dcf7e25d51b033d5a205e5888251f531
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/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" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 489028caf4023108e391120b28ad7ced1b79883e188bd4e29691757ce0a0665a
[INFO] running `Command { std: "docker" "start" "-a" "489028caf4023108e391120b28ad7ced1b79883e188bd4e29691757ce0a0665a", kill_on_drop: false }`
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/blockchainblock.rs:252:9
[INFO] [stdout]     |
[INFO] [stdout] 252 |         &self.curr_hash.copy_from_slice(&digest);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 252 |         let _ = &self.curr_hash.copy_from_slice(&digest);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling blockchain-base v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/blockchainblock.rs:252:9
[INFO] [stdout]     |
[INFO] [stdout] 252 |         &self.curr_hash.copy_from_slice(&digest);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 252 |         let _ = &self.curr_hash.copy_from_slice(&digest);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.16s
[INFO] running `Command { std: "docker" "inspect" "489028caf4023108e391120b28ad7ced1b79883e188bd4e29691757ce0a0665a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "489028caf4023108e391120b28ad7ced1b79883e188bd4e29691757ce0a0665a", kill_on_drop: false }`
[INFO] [stdout] 489028caf4023108e391120b28ad7ced1b79883e188bd4e29691757ce0a0665a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/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" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e9ad8a50a0f4df65b14b4cb4eb1b242883817c218fca8dc1a60f486e8aa2f781
[INFO] running `Command { std: "docker" "start" "-a" "e9ad8a50a0f4df65b14b4cb4eb1b242883817c218fca8dc1a60f486e8aa2f781", kill_on_drop: false }`
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]    --> src/blockchainblock.rs:252:9
[INFO] [stderr]     |
[INFO] [stderr] 252 |         &self.curr_hash.copy_from_slice(&digest);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 252 |         let _ = &self.curr_hash.copy_from_slice(&digest);
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `blockchain-base` (lib) generated 1 warning
[INFO] [stderr] warning: `blockchain-base` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/blockchainblock-87ae79c5e0b82c44)
[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 blockchainblock
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/blockchainblock.rs - blockchainblock::BlockchainBlock::new (line 57) ... ok
[INFO] [stdout] test src/blockchainblock.rs - blockchainblock::BlockchainBlock::check_value_inblock (line 114) ... ok
[INFO] [stdout] test src/blockchainblock.rs - blockchainblock::BlockchainBlock::new (line 42) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.56s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e9ad8a50a0f4df65b14b4cb4eb1b242883817c218fca8dc1a60f486e8aa2f781", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9ad8a50a0f4df65b14b4cb4eb1b242883817c218fca8dc1a60f486e8aa2f781", kill_on_drop: false }`
[INFO] [stdout] e9ad8a50a0f4df65b14b4cb4eb1b242883817c218fca8dc1a60f486e8aa2f781