[INFO] cloning repository https://github.com/tmthecoder/rust-blockchain-demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tmthecoder/rust-blockchain-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftmthecoder%2Frust-blockchain-demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftmthecoder%2Frust-blockchain-demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9177cedb6b35f03c729903b875a3dbec5a44a3ab
[INFO] testing tmthecoder/rust-blockchain-demo against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftmthecoder%2Frust-blockchain-demo" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tmthecoder/rust-blockchain-demo on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tmthecoder/rust-blockchain-demo
[INFO] finished tweaking git repo https://github.com/tmthecoder/rust-blockchain-demo
[INFO] tweaked toml for git repo https://github.com/tmthecoder/rust-blockchain-demo written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/tmthecoder/rust-blockchain-demo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4e51a9d800d251dd4a5a3d44f5769250497439b7669f1f387f35100aae79eca
[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" "e4e51a9d800d251dd4a5a3d44f5769250497439b7669f1f387f35100aae79eca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4e51a9d800d251dd4a5a3d44f5769250497439b7669f1f387f35100aae79eca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4e51a9d800d251dd4a5a3d44f5769250497439b7669f1f387f35100aae79eca", kill_on_drop: false }`
[INFO] [stdout] e4e51a9d800d251dd4a5a3d44f5769250497439b7669f1f387f35100aae79eca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f6ce989b66745cf53107c6bf3edfadf4724de02636db725e03672fde0d3a9375
[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" "f6ce989b66745cf53107c6bf3edfadf4724de02636db725e03672fde0d3a9375", kill_on_drop: false }`
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling crypto-mac v0.8.0
[INFO] [stderr]    Compiling blake2 v0.9.1
[INFO] [stderr]    Compiling rust-blockchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved imports `core::Blockchain`, `core::Block`, `core::Account`, `core::Transaction`
[INFO] [stdout]  --> src/main.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | use core::{Blockchain, Block, Account, Transaction};
[INFO] [stdout]   |            ^^^^^^^^^^  ^^^^^  ^^^^^^^  ^^^^^^^^^^^ no `Transaction` in `core`
[INFO] [stdout]   |            |           |      |
[INFO] [stdout]   |            |           |      no `Account` in `core`
[INFO] [stdout]   |            |           no `Block` in `core`
[INFO] [stdout]   |            no `Blockchain` in `core`
[INFO] [stdout]   |
[INFO] [stdout] help: a similar name exists in the module
[INFO] [stdout]   |
[INFO] [stdout] 7 | use core::{blockchain, Block, Account, Transaction};
[INFO] [stdout]   |            ~~~~~~~~~~
[INFO] [stdout] help: a similar name exists in the module
[INFO] [stdout]   |
[INFO] [stdout] 7 | use core::{Blockchain, block, Account, Transaction};
[INFO] [stdout]   |                        ~~~~~
[INFO] [stdout] help: a similar name exists in the module
[INFO] [stdout]   |
[INFO] [stdout] 7 | use core::{Blockchain, Block, account, Transaction};
[INFO] [stdout]   |                               ~~~~~~~
[INFO] [stdout] help: a similar name exists in the module
[INFO] [stdout]   |
[INFO] [stdout] 7 | use core::{Blockchain, Block, Account, transaction};
[INFO] [stdout]   |                                        ~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0659]: `core` is ambiguous
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use core::{Blockchain, Block, Account, Transaction};
[INFO] [stdout]   |     ^^^^ ambiguous name
[INFO] [stdout]   |
[INFO] [stdout]   = note: ambiguous because of multiple potential import sources
[INFO] [stdout]   = note: `core` could refer to a built-in crate
[INFO] [stdout]   = help: use `::core` to refer to this crate unambiguously
[INFO] [stdout] note: `core` could also refer to the module defined here
[INFO] [stdout]  --> src/main.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | mod core;
[INFO] [stdout]   | ^^^^^^^^^
[INFO] [stdout]   = help: use `crate::core` to refer to this module unambiguously
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0659.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-blockchain` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "f6ce989b66745cf53107c6bf3edfadf4724de02636db725e03672fde0d3a9375", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6ce989b66745cf53107c6bf3edfadf4724de02636db725e03672fde0d3a9375", kill_on_drop: false }`
[INFO] [stdout] f6ce989b66745cf53107c6bf3edfadf4724de02636db725e03672fde0d3a9375