[INFO] cloning repository https://github.com/akionsight/Polari
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/akionsight/Polari" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakionsight%2FPolari", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakionsight%2FPolari'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4692a9153e2038309647405459fa7a2893047586
[INFO] checking akionsight/Polari against master#49b6ac01d6f4c3da812039ae846407a20961aa4c for pr-154887
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakionsight%2FPolari" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/akionsight/Polari
[INFO] finished tweaking git repo https://github.com/akionsight/Polari
[INFO] tweaked toml for git repo https://github.com/akionsight/Polari written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/akionsight/Polari on toolchain 49b6ac01d6f4c3da812039ae846407a20961aa4c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+49b6ac01d6f4c3da812039ae846407a20961aa4c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/akionsight/Polari 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" "+49b6ac01d6f4c3da812039ae846407a20961aa4c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+49b6ac01d6f4c3da812039ae846407a20961aa4c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+49b6ac01d6f4c3da812039ae846407a20961aa4c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `bincode`
[INFO] [stdout]  --> src/blockchain.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use bincode;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `bincode`
[INFO] [stdout]  --> src/blockchain.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use bincode;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `bincode`
[INFO] [stdout]  --> src/blockchain.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use bincode;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `bincode`
[INFO] [stdout]  --> src/blockchain.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use bincode;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `p2p::Behaviour` is more private than the item `P2PNode::swarm`
[INFO] [stdout]   --> src/p2p.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub swarm: Swarm<Behaviour>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ field `P2PNode::swarm` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `p2p::Behaviour` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/p2p.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct Behaviour {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_item_trace` is never used
[INFO] [stdout]    --> src/blockchain.rs:135:12
[INFO] [stdout]     |
[INFO] [stdout]  15 | impl Blockchain {
[INFO] [stdout]     | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 135 |     pub fn get_item_trace(&self, item_id: &str) -> Vec<&Block> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `broadcast_block` is never used
[INFO] [stdout]   --> src/p2p.rs:90:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl P2PNode {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 90 |     pub fn broadcast_block(&mut self, block: Block) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `p2p::Behaviour` is more private than the item `P2PNode::swarm`
[INFO] [stdout]   --> src/p2p.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub swarm: Swarm<Behaviour>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ field `P2PNode::swarm` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `p2p::Behaviour` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/p2p.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct Behaviour {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_item_trace` is never used
[INFO] [stdout]    --> src/blockchain.rs:135:12
[INFO] [stdout]     |
[INFO] [stdout]  15 | impl Blockchain {
[INFO] [stdout]     | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 135 |     pub fn get_item_trace(&self, item_id: &str) -> Vec<&Block> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `broadcast_block` is never used
[INFO] [stdout]   --> src/p2p.rs:90:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl P2PNode {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 90 |     pub fn broadcast_block(&mut self, block: Block) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 44.11s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: redis v0.23.3
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 7`
[INFO] running `Command { std: "docker" "inspect" "5b8afbcd39e4fa26f892087746704bbac803a5a43a2dc6df8a9f18225befc9b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b8afbcd39e4fa26f892087746704bbac803a5a43a2dc6df8a9f18225befc9b4", kill_on_drop: false }`
[INFO] [stdout] 5b8afbcd39e4fa26f892087746704bbac803a5a43a2dc6df8a9f18225befc9b4