[INFO] cloning repository https://github.com/wujianyoujian/rust-learn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wujianyoujian/rust-learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwujianyoujian%2Frust-learn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwujianyoujian%2Frust-learn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4edb951a206d1520684327d325fbb1c2be14b889
[INFO] building wujianyoujian/rust-learn against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwujianyoujian%2Frust-learn" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wujianyoujian/rust-learn on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wujianyoujian/rust-learn
[INFO] finished tweaking git repo https://github.com/wujianyoujian/rust-learn
[INFO] tweaked toml for git repo https://github.com/wujianyoujian/rust-learn written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/wujianyoujian/rust-learn 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.114
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e0360d9e4636e834200631b0ccec68d4d25a188fd130bb6f0b0f64e68e87d6ae
[INFO] running `Command { std: "docker" "start" "-a" "e0360d9e4636e834200631b0ccec68d4d25a188fd130bb6f0b0f64e68e87d6ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e0360d9e4636e834200631b0ccec68d4d25a188fd130bb6f0b0f64e68e87d6ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0360d9e4636e834200631b0ccec68d4d25a188fd130bb6f0b0f64e68e87d6ae", kill_on_drop: false }`
[INFO] [stdout] e0360d9e4636e834200631b0ccec68d4d25a188fd130bb6f0b0f64e68e87d6ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c34badac029d777196ca7d720ed1cc0e09a7308d308c49a2f59f6bf454c46c4d
[INFO] running `Command { std: "docker" "start" "-a" "c34badac029d777196ca7d720ed1cc0e09a7308d308c49a2f59f6bf454c46c4d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.114
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling getrandom v0.2.4
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling rust-learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `user1`
[INFO] [stdout]  --> src/main.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let user1 = User {
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_user1`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user`
[INFO] [stdout]   --> src/main.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let user = User {
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_user`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `active`, `username`, `email`, and `sign_in_count` are never read
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct User {
[INFO] [stdout]   |        ---- fields in this struct
[INFO] [stdout] 2 |     active: bool,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 3 |     username: String,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 4 |     email: String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 5 |     sign_in_count: u64,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.60s
[INFO] running `Command { std: "docker" "inspect" "c34badac029d777196ca7d720ed1cc0e09a7308d308c49a2f59f6bf454c46c4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c34badac029d777196ca7d720ed1cc0e09a7308d308c49a2f59f6bf454c46c4d", kill_on_drop: false }`
[INFO] [stdout] c34badac029d777196ca7d720ed1cc0e09a7308d308c49a2f59f6bf454c46c4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b984059d594d4408b4858d9944595b059c45dbc6b0786aa7773b8c9834787fbc
[INFO] running `Command { std: "docker" "start" "-a" "b984059d594d4408b4858d9944595b059c45dbc6b0786aa7773b8c9834787fbc", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `user1`
[INFO] [stdout]  --> src/main.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let user1 = User {
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_user1`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user`
[INFO] [stdout]   --> src/main.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let user = User {
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_user`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `active`, `username`, `email`, and `sign_in_count` are never read
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct User {
[INFO] [stdout]   |        ---- fields in this struct
[INFO] [stdout] 2 |     active: bool,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 3 |     username: String,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 4 |     email: String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 5 |     sign_in_count: u64,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "b984059d594d4408b4858d9944595b059c45dbc6b0786aa7773b8c9834787fbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b984059d594d4408b4858d9944595b059c45dbc6b0786aa7773b8c9834787fbc", kill_on_drop: false }`
[INFO] [stdout] b984059d594d4408b4858d9944595b059c45dbc6b0786aa7773b8c9834787fbc