[INFO] cloning repository https://github.com/cannero/transaction_db
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cannero/transaction_db" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcannero%2Ftransaction_db", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcannero%2Ftransaction_db'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 05a18bfabe71bdcddebf0392bb3885f63b1de696
[INFO] checking cannero/transaction_db against master#17ffbc81a30c094193836a5d7f90dff273b5df93 for pr-138785
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcannero%2Ftransaction_db" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cannero/transaction_db on toolchain 17ffbc81a30c094193836a5d7f90dff273b5df93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+17ffbc81a30c094193836a5d7f90dff273b5df93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cannero/transaction_db
[INFO] finished tweaking git repo https://github.com/cannero/transaction_db
[INFO] tweaked toml for git repo https://github.com/cannero/transaction_db written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/cannero/transaction_db 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" "+17ffbc81a30c094193836a5d7f90dff273b5df93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking cannero/transaction_db against master#17ffbc81a30c094193836a5d7f90dff273b5df93 for pr-138785
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcannero%2Ftransaction_db" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cannero/transaction_db on toolchain 17ffbc81a30c094193836a5d7f90dff273b5df93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+17ffbc81a30c094193836a5d7f90dff273b5df93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cannero/transaction_db
[INFO] finished tweaking git repo https://github.com/cannero/transaction_db
[INFO] tweaked toml for git repo https://github.com/cannero/transaction_db written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/cannero/transaction_db 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" "+17ffbc81a30c094193836a5d7f90dff273b5df93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking cannero/transaction_db against master#17ffbc81a30c094193836a5d7f90dff273b5df93 for pr-138785
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcannero%2Ftransaction_db" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cannero/transaction_db on toolchain 17ffbc81a30c094193836a5d7f90dff273b5df93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+17ffbc81a30c094193836a5d7f90dff273b5df93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cannero/transaction_db
[INFO] finished tweaking git repo https://github.com/cannero/transaction_db
[INFO] tweaked toml for git repo https://github.com/cannero/transaction_db written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/cannero/transaction_db 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" "+17ffbc81a30c094193836a5d7f90dff273b5df93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+17ffbc81a30c094193836a5d7f90dff273b5df93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b722aee2e025d4d4cc9b49ab8234de4ccecd77ee11c2e930945b786a2f3c29a0
[INFO] running `Command { std: "docker" "start" "-a" "b722aee2e025d4d4cc9b49ab8234de4ccecd77ee11c2e930945b786a2f3c29a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b722aee2e025d4d4cc9b49ab8234de4ccecd77ee11c2e930945b786a2f3c29a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b722aee2e025d4d4cc9b49ab8234de4ccecd77ee11c2e930945b786a2f3c29a0", kill_on_drop: false }`
[INFO] [stdout] b722aee2e025d4d4cc9b49ab8234de4ccecd77ee11c2e930945b786a2f3c29a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+17ffbc81a30c094193836a5d7f90dff273b5df93" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 69827582bafc5fa36174d159116b41ec561db17a43dc592e08887ddd38539b2a
[INFO] running `Command { std: "docker" "start" "-a" "69827582bafc5fa36174d159116b41ec561db17a43dc592e08887ddd38539b2a", kill_on_drop: false }`
[INFO] [stderr]     Checking transaction_db v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `create_open_con` is never used
[INFO] [stdout]   --> src/main.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn create_open_con(db: &Rc<RefCell<Database>>) -> Connection {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `must_exec_command` is never used
[INFO] [stdout]   --> src/connection.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Connection {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 71 |     pub fn must_exec_command(&mut self, command: &str, args: &[&str]) -> String {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `ReadCommitted` and `RepeatableRead` are never constructed
[INFO] [stdout]   --> src/types.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub enum IsolationLevel {
[INFO] [stdout]    |          -------------- variants in this enum
[INFO] [stdout] 12 |     ReadUncommitted,
[INFO] [stdout] 13 |     ReadCommitted,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 14 |     RepeatableRead,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `IsolationLevel` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "69827582bafc5fa36174d159116b41ec561db17a43dc592e08887ddd38539b2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69827582bafc5fa36174d159116b41ec561db17a43dc592e08887ddd38539b2a", kill_on_drop: false }`
[INFO] [stdout] 69827582bafc5fa36174d159116b41ec561db17a43dc592e08887ddd38539b2a