[INFO] cloning repository https://github.com/TimothyMendezFeliciano/rust-ownership
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TimothyMendezFeliciano/rust-ownership" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTimothyMendezFeliciano%2Frust-ownership", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTimothyMendezFeliciano%2Frust-ownership'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] caefb0662823df7bec1e9155fc9b20339edd8397
[INFO] checking TimothyMendezFeliciano/rust-ownership against try#446cb600aa4837dd6c513f14fa0d25a909b177d7 for pr-149195
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTimothyMendezFeliciano%2Frust-ownership" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/TimothyMendezFeliciano/rust-ownership
[INFO] finished tweaking git repo https://github.com/TimothyMendezFeliciano/rust-ownership
[INFO] tweaked toml for git repo https://github.com/TimothyMendezFeliciano/rust-ownership written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/TimothyMendezFeliciano/rust-ownership on toolchain 446cb600aa4837dd6c513f14fa0d25a909b177d7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+446cb600aa4837dd6c513f14fa0d25a909b177d7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/TimothyMendezFeliciano/rust-ownership 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" "+446cb600aa4837dd6c513f14fa0d25a909b177d7" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking TimothyMendezFeliciano/rust-ownership against try#446cb600aa4837dd6c513f14fa0d25a909b177d7 for pr-149195
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTimothyMendezFeliciano%2Frust-ownership" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/TimothyMendezFeliciano/rust-ownership
[INFO] finished tweaking git repo https://github.com/TimothyMendezFeliciano/rust-ownership
[INFO] tweaked toml for git repo https://github.com/TimothyMendezFeliciano/rust-ownership written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/TimothyMendezFeliciano/rust-ownership on toolchain 446cb600aa4837dd6c513f14fa0d25a909b177d7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+446cb600aa4837dd6c513f14fa0d25a909b177d7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/TimothyMendezFeliciano/rust-ownership 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" "+446cb600aa4837dd6c513f14fa0d25a909b177d7" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+446cb600aa4837dd6c513f14fa0d25a909b177d7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a7af2eec61b472e9ee2366e6de9c36f9b46f6ddc171e8c8260dbf75dfa99c6ec
[INFO] running `Command { std: "docker" "start" "-a" "a7af2eec61b472e9ee2366e6de9c36f9b46f6ddc171e8c8260dbf75dfa99c6ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7af2eec61b472e9ee2366e6de9c36f9b46f6ddc171e8c8260dbf75dfa99c6ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7af2eec61b472e9ee2366e6de9c36f9b46f6ddc171e8c8260dbf75dfa99c6ec", kill_on_drop: false }`
[INFO] [stdout] a7af2eec61b472e9ee2366e6de9c36f9b46f6ddc171e8c8260dbf75dfa99c6ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+446cb600aa4837dd6c513f14fa0d25a909b177d7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0094808a634593b7712d4cf7b4445b44d1187a34863453af39b86b6e1b1a3fb1
[INFO] running `Command { std: "docker" "start" "-a" "0094808a634593b7712d4cf7b4445b44d1187a34863453af39b86b6e1b1a3fb1", kill_on_drop: false }`
[INFO] [stderr]     Checking ownership v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `y` is never read
[INFO] [stdout]   --> src/ownership_string.rs:20:18
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let mut  y = x;
[INFO] [stdout]    |                  ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y` is never read
[INFO] [stdout]   --> src/ownership_string.rs:20:18
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let mut  y = x;
[INFO] [stdout]    |                  ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s1`
[INFO] [stdout]   --> src/ownership_functions.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let s1 = gives_ownership(); //moves its return value into s1
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s1`
[INFO] [stdout]   --> src/ownership_functions.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let s1 = gives_ownership(); //moves its return value into s1
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s3`
[INFO] [stdout]   --> src/ownership_functions.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let s3 = takes_and_gives_back(s2); // s2 is moved into, which also moves its return value into s3.
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s3`
[INFO] [stdout]   --> src/ownership_functions.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let s3 = takes_and_gives_back(s2); // s2 is moved into, which also moves its return value into s3.
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/borrowing.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let mut t = String::from("hello");
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/borrowing.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     let mut t = String::from("hello");
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/borrowing.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let mut f = String::from("Formula");
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/borrowing.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let mut f = String::from("Formula");
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r1`
[INFO] [stdout]   --> src/borrowing.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let r1 = &mut s;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_r1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]   --> src/borrowing.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |         let p1 = &mut p;
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r1`
[INFO] [stdout]   --> src/borrowing.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let r1 = &mut s;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_r1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p2`
[INFO] [stdout]   --> src/borrowing.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let p2 = &mut p;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_p2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]   --> src/borrowing.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |         let p1 = &mut p;
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t1`
[INFO] [stdout]   --> src/borrowing.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let t1 = &t; // no problem
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_t1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t2`
[INFO] [stdout]   --> src/borrowing.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let t2 = &t; // no problem
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_t2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `actual_value_of_something`
[INFO] [stdout]  --> src/dangling.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let actual_value_of_something = no_dangle();
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_actual_value_of_something`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p2`
[INFO] [stdout]   --> src/borrowing.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let p2 = &mut p;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_p2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t1`
[INFO] [stdout]   --> src/borrowing.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let t1 = &t; // no problem
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_t1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t2`
[INFO] [stdout]   --> src/borrowing.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let t2 = &t; // no problem
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_t2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `word`
[INFO] [stdout]  --> src/slices.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let word = first_word(&s); //word will get the value 5.
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_word`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `actual_value_of_something`
[INFO] [stdout]  --> src/dangling.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let actual_value_of_something = no_dangle();
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_actual_value_of_something`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `word`
[INFO] [stdout]  --> src/slices.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let word = first_word(&s); //word will get the value 5.
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_word`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ownership_functions` is never used
[INFO] [stdout]  --> src/ownership_functions.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn ownership_functions() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `takes_ownership` is never used
[INFO] [stdout]   --> src/ownership_functions.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn takes_ownership(some_string: String) { // some_string comes into scope
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `makes_copy` is never used
[INFO] [stdout]   --> src/ownership_functions.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn makes_copy(some_integer: i32) { // some_integer comes into scope
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ownership_functions` is never used
[INFO] [stdout]  --> src/ownership_functions.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn ownership_functions() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `takes_ownership` is never used
[INFO] [stdout]   --> src/ownership_functions.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn takes_ownership(some_string: String) { // some_string comes into scope
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `makes_copy` is never used
[INFO] [stdout]   --> src/ownership_functions.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn makes_copy(some_integer: i32) { // some_integer comes into scope
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "0094808a634593b7712d4cf7b4445b44d1187a34863453af39b86b6e1b1a3fb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0094808a634593b7712d4cf7b4445b44d1187a34863453af39b86b6e1b1a3fb1", kill_on_drop: false }`
[INFO] [stdout] 0094808a634593b7712d4cf7b4445b44d1187a34863453af39b86b6e1b1a3fb1
