[INFO] cloning repository https://github.com/polkadot-kusama-esp/intro_a_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/polkadot-kusama-esp/intro_a_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpolkadot-kusama-esp%2Fintro_a_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpolkadot-kusama-esp%2Fintro_a_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 96762479a000ab2df14d38cd73f5911d25c4ee4f
[INFO] testing polkadot-kusama-esp/intro_a_rust against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpolkadot-kusama-esp%2Fintro_a_rust" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/polkadot-kusama-esp/intro_a_rust
[INFO] finished tweaking git repo https://github.com/polkadot-kusama-esp/intro_a_rust
[INFO] tweaked toml for git repo https://github.com/polkadot-kusama-esp/intro_a_rust written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/polkadot-kusama-esp/intro_a_rust on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/polkadot-kusama-esp/intro_a_rust 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e88c2f2c859e92a8fa65cda0c6520968088a985d91aa9382c84a1076ec36a5a4
[INFO] running `Command { std: "docker" "start" "-a" "e88c2f2c859e92a8fa65cda0c6520968088a985d91aa9382c84a1076ec36a5a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e88c2f2c859e92a8fa65cda0c6520968088a985d91aa9382c84a1076ec36a5a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e88c2f2c859e92a8fa65cda0c6520968088a985d91aa9382c84a1076ec36a5a4", kill_on_drop: false }`
[INFO] [stdout] e88c2f2c859e92a8fa65cda0c6520968088a985d91aa9382c84a1076ec36a5a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a241c4f47202d50a2cb030b401c014105e2139fbf37f64199716cf1972690e96
[INFO] running `Command { std: "docker" "start" "-a" "a241c4f47202d50a2cb030b401c014105e2139fbf37f64199716cf1972690e96", kill_on_drop: false }`
[INFO] [stderr]    Compiling tuto_twitter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `LikeIncrementer` is never used
[INFO] [stdout]  --> src/main.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | trait LikeIncrementer<T: Default> {
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Actions` is never used
[INFO] [stdout]   --> src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | trait Actions<T, U>: Editable<T> + LikeIncrementer<U>
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `user_name` and `content` are never read
[INFO] [stdout]   --> src/main.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 51 | struct Reply {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 52 |     user_name: String,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 53 |     content: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Reply` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `headline`, `location`, `author`, and `category` are never read
[INFO] [stdout]   --> src/main.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 57 | struct Article {
[INFO] [stdout]    |        ------- fields in this struct
[INFO] [stdout] 58 |     headline: String,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 59 |     location: String,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 60 |     author: String,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 61 |     content: String,
[INFO] [stdout] 62 |     category: Option<Category>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Article` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Politics`, `Sports`, and `Health` are never constructed
[INFO] [stdout]   --> src/main.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 72 | enum Category {
[INFO] [stdout]    |      -------- variants in this enum
[INFO] [stdout] 73 |     Politics,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 74 |     Sports,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 75 |     Economy,
[INFO] [stdout] 76 |     Health,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Category` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "a241c4f47202d50a2cb030b401c014105e2139fbf37f64199716cf1972690e96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a241c4f47202d50a2cb030b401c014105e2139fbf37f64199716cf1972690e96", kill_on_drop: false }`
[INFO] [stdout] a241c4f47202d50a2cb030b401c014105e2139fbf37f64199716cf1972690e96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c8d75c70539a0f2338149685297d558a171dc1144922720c023658a57d6890b
[INFO] running `Command { std: "docker" "start" "-a" "5c8d75c70539a0f2338149685297d558a171dc1144922720c023658a57d6890b", kill_on_drop: false }`
[INFO] [stderr]    Compiling tuto_twitter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `LikeIncrementer` is never used
[INFO] [stdout]  --> src/main.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | trait LikeIncrementer<T: Default> {
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Actions` is never used
[INFO] [stdout]   --> src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | trait Actions<T, U>: Editable<T> + LikeIncrementer<U>
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `user_name` and `content` are never read
[INFO] [stdout]   --> src/main.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 51 | struct Reply {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 52 |     user_name: String,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 53 |     content: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Reply` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `headline`, `location`, `author`, and `category` are never read
[INFO] [stdout]   --> src/main.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 57 | struct Article {
[INFO] [stdout]    |        ------- fields in this struct
[INFO] [stdout] 58 |     headline: String,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 59 |     location: String,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 60 |     author: String,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 61 |     content: String,
[INFO] [stdout] 62 |     category: Option<Category>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Article` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Politics`, `Sports`, and `Health` are never constructed
[INFO] [stdout]   --> src/main.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 72 | enum Category {
[INFO] [stdout]    |      -------- variants in this enum
[INFO] [stdout] 73 |     Politics,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 74 |     Sports,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 75 |     Economy,
[INFO] [stdout] 76 |     Health,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Category` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "5c8d75c70539a0f2338149685297d558a171dc1144922720c023658a57d6890b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c8d75c70539a0f2338149685297d558a171dc1144922720c023658a57d6890b", kill_on_drop: false }`
[INFO] [stdout] 5c8d75c70539a0f2338149685297d558a171dc1144922720c023658a57d6890b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0d20f07c0a5741b27d91a4c5d1da209567dd8e153502cbdc7c2fdf1e27591c01
[INFO] running `Command { std: "docker" "start" "-a" "0d20f07c0a5741b27d91a4c5d1da209567dd8e153502cbdc7c2fdf1e27591c01", kill_on_drop: false }`
[INFO] [stderr] warning: trait `LikeIncrementer` is never used
[INFO] [stderr]  --> src/main.rs:7:7
[INFO] [stderr]   |
[INFO] [stderr] 7 | trait LikeIncrementer<T: Default> {
[INFO] [stderr]   |       ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Actions` is never used
[INFO] [stderr]   --> src/main.rs:11:7
[INFO] [stderr]    |
[INFO] [stderr] 11 | trait Actions<T, U>: Editable<T> + LikeIncrementer<U>
[INFO] [stderr]    |       ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `user_name` and `content` are never read
[INFO] [stderr]   --> src/main.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 51 | struct Reply {
[INFO] [stderr]    |        ----- fields in this struct
[INFO] [stderr] 52 |     user_name: String,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 53 |     content: String,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Reply` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: fields `headline`, `location`, `author`, and `category` are never read
[INFO] [stderr]   --> src/main.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 57 | struct Article {
[INFO] [stderr]    |        ------- fields in this struct
[INFO] [stderr] 58 |     headline: String,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 59 |     location: String,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 60 |     author: String,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 61 |     content: String,
[INFO] [stderr] 62 |     category: Option<Category>,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Article` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Politics`, `Sports`, and `Health` are never constructed
[INFO] [stderr]   --> src/main.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 72 | enum Category {
[INFO] [stderr]    |      -------- variants in this enum
[INFO] [stderr] 73 |     Politics,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 74 |     Sports,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 75 |     Economy,
[INFO] [stderr] 76 |     Health,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Category` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: `tuto_twitter` (bin "tuto_twitter" test) generated 5 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/tuto_twitter-f81fbf251d4e013d)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[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] running `Command { std: "docker" "inspect" "0d20f07c0a5741b27d91a4c5d1da209567dd8e153502cbdc7c2fdf1e27591c01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d20f07c0a5741b27d91a4c5d1da209567dd8e153502cbdc7c2fdf1e27591c01", kill_on_drop: false }`
[INFO] [stdout] 0d20f07c0a5741b27d91a4c5d1da209567dd8e153502cbdc7c2fdf1e27591c01