[INFO] cloning repository https://github.com/kalinsky/rust_introduction
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kalinsky/rust_introduction" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkalinsky%2Frust_introduction", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkalinsky%2Frust_introduction'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ef8bcce5dfb02a792018dbabd77ac0fc05b51191
[INFO] testing kalinsky/rust_introduction against try#61cd42370816fd135c0f3b9debf2f5dfcf194594 for pr-98839
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkalinsky%2Frust_introduction" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kalinsky/rust_introduction on toolchain 61cd42370816fd135c0f3b9debf2f5dfcf194594
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+61cd42370816fd135c0f3b9debf2f5dfcf194594" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kalinsky/rust_introduction
[INFO] finished tweaking git repo https://github.com/kalinsky/rust_introduction
[INFO] tweaked toml for git repo https://github.com/kalinsky/rust_introduction written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/kalinsky/rust_introduction already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+61cd42370816fd135c0f3b9debf2f5dfcf194594" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:5873ed620acfc3295992aedd9294443d62a478a48ba243bc5e6c4f5abaffa05f" "/opt/rustwide/cargo-home/bin/cargo" "+61cd42370816fd135c0f3b9debf2f5dfcf194594" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fec886e676d276169992fd1c39e7857b8fce40b6b2c4d202c93af6c6b04c74d2
[INFO] running `Command { std: "docker" "start" "-a" "fec886e676d276169992fd1c39e7857b8fce40b6b2c4d202c93af6c6b04c74d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fec886e676d276169992fd1c39e7857b8fce40b6b2c4d202c93af6c6b04c74d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fec886e676d276169992fd1c39e7857b8fce40b6b2c4d202c93af6c6b04c74d2", kill_on_drop: false }`
[INFO] [stdout] fec886e676d276169992fd1c39e7857b8fce40b6b2c4d202c93af6c6b04c74d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:5873ed620acfc3295992aedd9294443d62a478a48ba243bc5e6c4f5abaffa05f" "/opt/rustwide/cargo-home/bin/cargo" "+61cd42370816fd135c0f3b9debf2f5dfcf194594" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 61b2898f9287e68779091d66153fb0cc790dfb4881c40bf4c9992475e275f9db
[INFO] running `Command { std: "docker" "start" "-a" "61b2898f9287e68779091d66153fb0cc790dfb4881c40bf4c9992475e275f9db", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_introduction v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `admin_user`
[INFO] [stdout]   --> src/structs.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let admin_user = build_power_user(
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_admin_user`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `email`, `sign_in_count` and `active` are never read
[INFO] [stdout]  --> src/structs.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct User {
[INFO] [stdout]   |        ---- fields in this struct
[INFO] [stdout] 3 |     username: String,
[INFO] [stdout] 4 |     email: String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 5 |     sign_in_count: u64,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 6 |     active: bool
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout]   = note: `User` 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 `user` and `has_powers` are never read
[INFO] [stdout]   --> src/structs.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct AdminUser {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] 11 |     user: User,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 12 |     has_powers: bool
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AdminUser` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "61b2898f9287e68779091d66153fb0cc790dfb4881c40bf4c9992475e275f9db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61b2898f9287e68779091d66153fb0cc790dfb4881c40bf4c9992475e275f9db", kill_on_drop: false }`
[INFO] [stdout] 61b2898f9287e68779091d66153fb0cc790dfb4881c40bf4c9992475e275f9db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:5873ed620acfc3295992aedd9294443d62a478a48ba243bc5e6c4f5abaffa05f" "/opt/rustwide/cargo-home/bin/cargo" "+61cd42370816fd135c0f3b9debf2f5dfcf194594" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] acc09a9c76eb57d79c7cfc1f7d2d4f70a76f00e550915cb47d2534d4b3061bbe
[INFO] running `Command { std: "docker" "start" "-a" "acc09a9c76eb57d79c7cfc1f7d2d4f70a76f00e550915cb47d2534d4b3061bbe", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_introduction v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `admin_user`
[INFO] [stdout]   --> src/structs.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let admin_user = build_power_user(
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_admin_user`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `email`, `sign_in_count` and `active` are never read
[INFO] [stdout]  --> src/structs.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct User {
[INFO] [stdout]   |        ---- fields in this struct
[INFO] [stdout] 3 |     username: String,
[INFO] [stdout] 4 |     email: String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 5 |     sign_in_count: u64,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 6 |     active: bool
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout]   = note: `User` 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 `user` and `has_powers` are never read
[INFO] [stdout]   --> src/structs.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct AdminUser {
[INFO] [stdout]    |        --------- fields in this struct
[INFO] [stdout] 11 |     user: User,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 12 |     has_powers: bool
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AdminUser` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "acc09a9c76eb57d79c7cfc1f7d2d4f70a76f00e550915cb47d2534d4b3061bbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acc09a9c76eb57d79c7cfc1f7d2d4f70a76f00e550915cb47d2534d4b3061bbe", kill_on_drop: false }`
[INFO] [stdout] acc09a9c76eb57d79c7cfc1f7d2d4f70a76f00e550915cb47d2534d4b3061bbe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:5873ed620acfc3295992aedd9294443d62a478a48ba243bc5e6c4f5abaffa05f" "/opt/rustwide/cargo-home/bin/cargo" "+61cd42370816fd135c0f3b9debf2f5dfcf194594" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3f1b3e4a08a47a8d9bc6e6f38105ea60591ca1296796c2ce51f69078db413c2a
[INFO] running `Command { std: "docker" "start" "-a" "3f1b3e4a08a47a8d9bc6e6f38105ea60591ca1296796c2ce51f69078db413c2a", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `admin_user`
[INFO] [stderr]   --> src/structs.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |     let admin_user = build_power_user(
[INFO] [stderr]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_admin_user`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `email`, `sign_in_count` and `active` are never read
[INFO] [stderr]  --> src/structs.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | struct User {
[INFO] [stderr]   |        ---- fields in this struct
[INFO] [stderr] 3 |     username: String,
[INFO] [stderr] 4 |     email: String,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 5 |     sign_in_count: u64,
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 6 |     active: bool
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr]   = note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: fields `user` and `has_powers` are never read
[INFO] [stderr]   --> src/structs.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | struct AdminUser {
[INFO] [stderr]    |        --------- fields in this struct
[INFO] [stderr] 11 |     user: User,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 12 |     has_powers: bool
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `AdminUser` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_introduction` (bin "rust_introduction" test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_introduction-40a0d13711b07098)
[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" "3f1b3e4a08a47a8d9bc6e6f38105ea60591ca1296796c2ce51f69078db413c2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f1b3e4a08a47a8d9bc6e6f38105ea60591ca1296796c2ce51f69078db413c2a", kill_on_drop: false }`
[INFO] [stdout] 3f1b3e4a08a47a8d9bc6e6f38105ea60591ca1296796c2ce51f69078db413c2a