[INFO] fetching crate blockchain-base 0.1.0...
[INFO] testing blockchain-base-0.1.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate blockchain-base 0.1.0 into /workspace/builds/worker-7-tc2/source
[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-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate blockchain-base 0.1.0 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 25 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dfb4edd1c46b24d7c112ddcf0ba5c749c9378b4b09a39551634518c05620dc6f
[INFO] running `Command { std: "docker" "start" "-a" "dfb4edd1c46b24d7c112ddcf0ba5c749c9378b4b09a39551634518c05620dc6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dfb4edd1c46b24d7c112ddcf0ba5c749c9378b4b09a39551634518c05620dc6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfb4edd1c46b24d7c112ddcf0ba5c749c9378b4b09a39551634518c05620dc6f", kill_on_drop: false }`
[INFO] [stdout] dfb4edd1c46b24d7c112ddcf0ba5c749c9378b4b09a39551634518c05620dc6f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 71854a114104695708d55590cb81a1c44337e78e19999e21779ea750d016502f
[INFO] running `Command { std: "docker" "start" "-a" "71854a114104695708d55590cb81a1c44337e78e19999e21779ea750d016502f", kill_on_drop: false }`
[INFO] [stderr]    Compiling hex v0.3.2
[INFO] [stderr]    Compiling crypto-hash v0.3.4
[INFO] [stderr]    Compiling blockchain-base v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/blockchainblock.rs:87:52
[INFO] [stdout]    |
[INFO] [stdout] 87 |     pub fn new(prev_hash: Option<BlockHash>, data: &[T], timestamp: u64, nonce: u64) -> BlockchainBlock<T> {
[INFO] [stdout]    |                                                    ^^^^ the lifetime is elided here     ^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 87 |     pub fn new(prev_hash: Option<BlockHash>, data: &[T], timestamp: u64, nonce: u64) -> BlockchainBlock<'_, T> {
[INFO] [stdout]    |                                                                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[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)]` (part of `#[warn(unused)]`) 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.31s
[INFO] running `Command { std: "docker" "inspect" "71854a114104695708d55590cb81a1c44337e78e19999e21779ea750d016502f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71854a114104695708d55590cb81a1c44337e78e19999e21779ea750d016502f", kill_on_drop: false }`
[INFO] [stdout] 71854a114104695708d55590cb81a1c44337e78e19999e21779ea750d016502f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c5fbb9104a6d7e60d346aefc3bcd6773d0ed3db2d074596af62b5bec31b496a
[INFO] running `Command { std: "docker" "start" "-a" "6c5fbb9104a6d7e60d346aefc3bcd6773d0ed3db2d074596af62b5bec31b496a", kill_on_drop: false }`
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/blockchainblock.rs:87:52
[INFO] [stdout]    |
[INFO] [stdout] 87 |     pub fn new(prev_hash: Option<BlockHash>, data: &[T], timestamp: u64, nonce: u64) -> BlockchainBlock<T> {
[INFO] [stdout]    |                                                    ^^^^ the lifetime is elided here     ^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 87 |     pub fn new(prev_hash: Option<BlockHash>, data: &[T], timestamp: u64, nonce: u64) -> BlockchainBlock<'_, T> {
[INFO] [stdout]    |                                                                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[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)]` (part of `#[warn(unused)]`) 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] [stderr]    Compiling blockchain-base v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/blockchainblock.rs:87:52
[INFO] [stdout]    |
[INFO] [stdout] 87 |     pub fn new(prev_hash: Option<BlockHash>, data: &[T], timestamp: u64, nonce: u64) -> BlockchainBlock<T> {
[INFO] [stdout]    |                                                    ^^^^ the lifetime is elided here     ^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 87 |     pub fn new(prev_hash: Option<BlockHash>, data: &[T], timestamp: u64, nonce: u64) -> BlockchainBlock<'_, T> {
[INFO] [stdout]    |                                                                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[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)]` (part of `#[warn(unused)]`) 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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "6c5fbb9104a6d7e60d346aefc3bcd6773d0ed3db2d074596af62b5bec31b496a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c5fbb9104a6d7e60d346aefc3bcd6773d0ed3db2d074596af62b5bec31b496a", kill_on_drop: false }`
[INFO] [stdout] 6c5fbb9104a6d7e60d346aefc3bcd6773d0ed3db2d074596af62b5bec31b496a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 71ef8ccc352ac665cd1e2ccffc56b977db16f7b9302968fdd2328bf4cd3f8fcd
[INFO] running `Command { std: "docker" "start" "-a" "71ef8ccc352ac665cd1e2ccffc56b977db16f7b9302968fdd2328bf4cd3f8fcd", kill_on_drop: false }`
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/blockchainblock.rs:87:52
[INFO] [stderr]    |
[INFO] [stderr] 87 |     pub fn new(prev_hash: Option<BlockHash>, data: &[T], timestamp: u64, nonce: u64) -> BlockchainBlock<T> {
[INFO] [stderr]    |                                                    ^^^^ the lifetime is elided here     ^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 87 |     pub fn new(prev_hash: Option<BlockHash>, data: &[T], timestamp: u64, nonce: u64) -> BlockchainBlock<'_, T> {
[INFO] [stderr]    |                                                                                                         +++
[INFO] [stderr] 
[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)]` (part of `#[warn(unused)]`) 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 2 warnings (run `cargo fix --lib -p blockchain-base` to apply 1 suggestion)
[INFO] [stderr] warning: `blockchain-base` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/blockchainblock-9673bb31098d6244)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests blockchainblock
[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] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/blockchainblock.rs - blockchainblock::BlockchainBlock<'a,T>::new (line 42) ... ok
[INFO] [stdout] test src/blockchainblock.rs - blockchainblock::BlockchainBlock<'a,T>::new (line 57) ... ok
[INFO] [stdout] test src/blockchainblock.rs - blockchainblock::BlockchainBlock<'a,T>::check_value_inblock (line 114) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.67s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "71ef8ccc352ac665cd1e2ccffc56b977db16f7b9302968fdd2328bf4cd3f8fcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71ef8ccc352ac665cd1e2ccffc56b977db16f7b9302968fdd2328bf4cd3f8fcd", kill_on_drop: false }`
[INFO] [stdout] 71ef8ccc352ac665cd1e2ccffc56b977db16f7b9302968fdd2328bf4cd3f8fcd
