[INFO] cloning repository https://github.com/LironHazan/rusty-playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LironHazan/rusty-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLironHazan%2Frusty-playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLironHazan%2Frusty-playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d1ad54bf14f4bde13310a62f95c905848405f864
[INFO] building LironHazan/rusty-playground 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%2FLironHazan%2Frusty-playground" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LironHazan/rusty-playground 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/LironHazan/rusty-playground
[INFO] finished tweaking git repo https://github.com/LironHazan/rusty-playground
[INFO] tweaked toml for git repo https://github.com/LironHazan/rusty-playground written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/LironHazan/rusty-playground 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] b5af42a4bdea03d3ee782bce6616fb3e0bbadb0215cf1d50868d9f5d71f032e3
[INFO] running `Command { std: "docker" "start" "-a" "b5af42a4bdea03d3ee782bce6616fb3e0bbadb0215cf1d50868d9f5d71f032e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b5af42a4bdea03d3ee782bce6616fb3e0bbadb0215cf1d50868d9f5d71f032e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5af42a4bdea03d3ee782bce6616fb3e0bbadb0215cf1d50868d9f5d71f032e3", kill_on_drop: false }`
[INFO] [stdout] b5af42a4bdea03d3ee782bce6616fb3e0bbadb0215cf1d50868d9f5d71f032e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 8ea60341002bbf4ae1b8effc5b8f17f520ec178b83f90cdae16a57ae8df29ccd
[INFO] running `Command { std: "docker" "start" "-a" "8ea60341002bbf4ae1b8effc5b8f17f520ec178b83f90cdae16a57ae8df29ccd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling rusty-playgraound v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `lang_stuff::borrows::borrows::imperative_sum`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use lang_stuff::borrows::borrows::imperative_sum;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `take_ownwership_sum` is never used
[INFO] [stdout]  --> src/lang_stuff/borrows.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 |     fn take_ownwership_sum(v: Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `borrow_sum` is never used
[INFO] [stdout]   --> src/lang_stuff/borrows.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn borrow_sum(v: &Vec<i32>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `imperative_sum` is never used
[INFO] [stdout]   --> src/lang_stuff/borrows.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn imperative_sum() {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `NoisyAnimal` is never used
[INFO] [stdout]  --> src/lang_stuff/trait_obj.rs:1:7
[INFO] [stdout]   |
[INFO] [stdout] 1 | trait NoisyAnimal {
[INFO] [stdout]   |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cat` is never constructed
[INFO] [stdout]  --> src/lang_stuff/trait_obj.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Cat{}
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Dog` is never constructed
[INFO] [stdout]   --> src/lang_stuff/trait_obj.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Dog{}
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_noises` is never used
[INFO] [stdout]   --> src/lang_stuff/trait_obj.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn make_noises(animals: Vec<Box<dyn NoisyAnimal>>) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_noises_with_constraints` is never used
[INFO] [stdout]   --> src/lang_stuff/trait_obj.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn make_noises_with_constraints<T: NoisyAnimal>(animal: T) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `call_make_noises` is never used
[INFO] [stdout]   --> src/lang_stuff/trait_obj.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn call_make_noises() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.02s
[INFO] running `Command { std: "docker" "inspect" "8ea60341002bbf4ae1b8effc5b8f17f520ec178b83f90cdae16a57ae8df29ccd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ea60341002bbf4ae1b8effc5b8f17f520ec178b83f90cdae16a57ae8df29ccd", kill_on_drop: false }`
[INFO] [stdout] 8ea60341002bbf4ae1b8effc5b8f17f520ec178b83f90cdae16a57ae8df29ccd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] d1eb39c9d2e8aa502eefab2affd05d5b6c909fecda1bb5c7978c9fd45066d8da
[INFO] running `Command { std: "docker" "start" "-a" "d1eb39c9d2e8aa502eefab2affd05d5b6c909fecda1bb5c7978c9fd45066d8da", kill_on_drop: false }`
[INFO] [stderr]    Compiling rusty-playgraound v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `lang_stuff::borrows::borrows::imperative_sum`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use lang_stuff::borrows::borrows::imperative_sum;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `take_ownwership_sum` is never used
[INFO] [stdout]  --> src/lang_stuff/borrows.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 |     fn take_ownwership_sum(v: Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `borrow_sum` is never used
[INFO] [stdout]   --> src/lang_stuff/borrows.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn borrow_sum(v: &Vec<i32>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `imperative_sum` is never used
[INFO] [stdout]   --> src/lang_stuff/borrows.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn imperative_sum() {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `NoisyAnimal` is never used
[INFO] [stdout]  --> src/lang_stuff/trait_obj.rs:1:7
[INFO] [stdout]   |
[INFO] [stdout] 1 | trait NoisyAnimal {
[INFO] [stdout]   |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cat` is never constructed
[INFO] [stdout]  --> src/lang_stuff/trait_obj.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Cat{}
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Dog` is never constructed
[INFO] [stdout]   --> src/lang_stuff/trait_obj.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Dog{}
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_noises` is never used
[INFO] [stdout]   --> src/lang_stuff/trait_obj.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn make_noises(animals: Vec<Box<dyn NoisyAnimal>>) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_noises_with_constraints` is never used
[INFO] [stdout]   --> src/lang_stuff/trait_obj.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn make_noises_with_constraints<T: NoisyAnimal>(animal: T) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `call_make_noises` is never used
[INFO] [stdout]   --> src/lang_stuff/trait_obj.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn call_make_noises() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "d1eb39c9d2e8aa502eefab2affd05d5b6c909fecda1bb5c7978c9fd45066d8da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1eb39c9d2e8aa502eefab2affd05d5b6c909fecda1bb5c7978c9fd45066d8da", kill_on_drop: false }`
[INFO] [stdout] d1eb39c9d2e8aa502eefab2affd05d5b6c909fecda1bb5c7978c9fd45066d8da