[INFO] cloning repository https://github.com/soniceroy/RustBlockchain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/soniceroy/RustBlockchain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsoniceroy%2FRustBlockchain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsoniceroy%2FRustBlockchain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c33433ce9ef133f14b9a808520b6b0bc275bbc9b
[INFO] checking soniceroy/RustBlockchain against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsoniceroy%2FRustBlockchain" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/soniceroy/RustBlockchain on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/soniceroy/RustBlockchain
[INFO] finished tweaking git repo https://github.com/soniceroy/RustBlockchain
[INFO] tweaked toml for git repo https://github.com/soniceroy/RustBlockchain written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/soniceroy/RustBlockchain already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2068f547f3be67345b8a4845d0be80eadc9850c7a2549ea6a500f4e2c6a95aa4
[INFO] running `Command { std: "docker" "start" "-a" "2068f547f3be67345b8a4845d0be80eadc9850c7a2549ea6a500f4e2c6a95aa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2068f547f3be67345b8a4845d0be80eadc9850c7a2549ea6a500f4e2c6a95aa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2068f547f3be67345b8a4845d0be80eadc9850c7a2549ea6a500f4e2c6a95aa4", kill_on_drop: false }`
[INFO] [stdout] 2068f547f3be67345b8a4845d0be80eadc9850c7a2549ea6a500f4e2c6a95aa4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d2f8d7c36f25e97a7446be36f5932bade090cecf526c619293a88723ca1149d
[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" "1d2f8d7c36f25e97a7446be36f5932bade090cecf526c619293a88723ca1149d", kill_on_drop: false }`
[INFO] [stderr]     Checking blockchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0495]: cannot infer an appropriate lifetime for lifetime parameter `'a` due to conflicting requirements
[INFO] [stdout]   --> src/main.rs:59:19
[INFO] [stdout]    |
[INFO] [stdout] 59 |         let new_block = Block::new(0, self.current_transactions, 100, 0);
[INFO] [stdout]    |                         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: first, the lifetime cannot outlive the anonymous lifetime #1 defined on the method body at 57:2...
[INFO] [stdout]   --> src/main.rs:57:2
[INFO] [stdout]    |
[INFO] [stdout] 57 |       fn new_block(&mut self) {
[INFO] [stdout]    |  _____^
[INFO] [stdout] 58 | |
[INFO] [stdout] 59 | |         let new_block = Block::new(0, self.current_transactions, 100, 0);
[INFO] [stdout] 60 | |         self.chain.push(new_block);
[INFO] [stdout] 61 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] note: ...so that reference does not outlive borrowed content
[INFO] [stdout]   --> src/main.rs:59:33
[INFO] [stdout]    |
[INFO] [stdout] 59 |         let new_block = Block::new(0, self.current_transactions, 100, 0);
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: but, the lifetime must be valid for the lifetime `'a` as defined on the impl at 50:7...
[INFO] [stdout]   --> src/main.rs:50:7
[INFO] [stdout]    |
[INFO] [stdout] 50 | impl <'a>Blockchain<'a> {
[INFO] [stdout]    |       ^^
[INFO] [stdout] note: ...so that the expression is assignable
[INFO] [stdout]   --> src/main.rs:60:19
[INFO] [stdout]    |
[INFO] [stdout] 60 |         self.chain.push(new_block);
[INFO] [stdout]    |                         ^^^^^^^^^
[INFO] [stdout]    = note: expected `Block<'a>`
[INFO] [stdout]               found `Block<'_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0495`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `blockchain`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0495]: cannot infer an appropriate lifetime for lifetime parameter `'a` due to conflicting requirements
[INFO] [stdout]   --> src/main.rs:59:19
[INFO] [stdout]    |
[INFO] [stdout] 59 |         let new_block = Block::new(0, self.current_transactions, 100, 0);
[INFO] [stdout]    |                         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: first, the lifetime cannot outlive the anonymous lifetime #1 defined on the method body at 57:2...
[INFO] [stdout]   --> src/main.rs:57:2
[INFO] [stdout]    |
[INFO] [stdout] 57 |       fn new_block(&mut self) {
[INFO] [stdout]    |  _____^
[INFO] [stdout] 58 | |
[INFO] [stdout] 59 | |         let new_block = Block::new(0, self.current_transactions, 100, 0);
[INFO] [stdout] 60 | |         self.chain.push(new_block);
[INFO] [stdout] 61 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] note: ...so that reference does not outlive borrowed content
[INFO] [stdout]   --> src/main.rs:59:33
[INFO] [stdout]    |
[INFO] [stdout] 59 |         let new_block = Block::new(0, self.current_transactions, 100, 0);
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: but, the lifetime must be valid for the lifetime `'a` as defined on the impl at 50:7...
[INFO] [stdout]   --> src/main.rs:50:7
[INFO] [stdout]    |
[INFO] [stdout] 50 | impl <'a>Blockchain<'a> {
[INFO] [stdout]    |       ^^
[INFO] [stdout] note: ...so that the expression is assignable
[INFO] [stdout]   --> src/main.rs:60:19
[INFO] [stdout]    |
[INFO] [stdout] 60 |         self.chain.push(new_block);
[INFO] [stdout]    |                         ^^^^^^^^^
[INFO] [stdout]    = note: expected `Block<'a>`
[INFO] [stdout]               found `Block<'_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0495`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "1d2f8d7c36f25e97a7446be36f5932bade090cecf526c619293a88723ca1149d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d2f8d7c36f25e97a7446be36f5932bade090cecf526c619293a88723ca1149d", kill_on_drop: false }`
[INFO] [stdout] 1d2f8d7c36f25e97a7446be36f5932bade090cecf526c619293a88723ca1149d