[INFO] cloning repository https://github.com/seriwb/study_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/seriwb/study_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseriwb%2Fstudy_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseriwb%2Fstudy_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 220fcbf217f92e15724e129fc1f3e2dcdd7cbefc
[INFO] testing seriwb/study_rust against master#ff2c56344c764af598ad33027e9c7a48881808ef for pr-118825
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseriwb%2Fstudy_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] validating manifest of git repo https://github.com/seriwb/study_rust on toolchain ff2c56344c764af598ad33027e9c7a48881808ef
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff2c56344c764af598ad33027e9c7a48881808ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/seriwb/study_rust
[INFO] finished tweaking git repo https://github.com/seriwb/study_rust
[INFO] tweaked toml for git repo https://github.com/seriwb/study_rust written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/seriwb/study_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" "+ff2c56344c764af598ad33027e9c7a48881808ef" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] testing seriwb/study_rust against try#5e4273472e1b2f223618a9b3def795f6224f241d for pr-118825
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseriwb%2Fstudy_rust" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/seriwb/study_rust on toolchain 5e4273472e1b2f223618a9b3def795f6224f241d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5e4273472e1b2f223618a9b3def795f6224f241d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/seriwb/study_rust
[INFO] finished tweaking git repo https://github.com/seriwb/study_rust
[INFO] tweaked toml for git repo https://github.com/seriwb/study_rust written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/seriwb/study_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" "+5e4273472e1b2f223618a9b3def795f6224f241d" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5e4273472e1b2f223618a9b3def795f6224f241d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9bce79a8c44fa5869c34262933dda986f91b6c69c1ae4c484a4c610ef173432f
[INFO] running `Command { std: "docker" "start" "-a" "9bce79a8c44fa5869c34262933dda986f91b6c69c1ae4c484a4c610ef173432f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9bce79a8c44fa5869c34262933dda986f91b6c69c1ae4c484a4c610ef173432f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bce79a8c44fa5869c34262933dda986f91b6c69c1ae4c484a4c610ef173432f", kill_on_drop: false }`
[INFO] [stdout] 9bce79a8c44fa5869c34262933dda986f91b6c69c1ae4c484a4c610ef173432f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5e4273472e1b2f223618a9b3def795f6224f241d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 249a793a2edd74645e7d76530976f2dd2eef17cbdadd50e2a0903535d0852bec
[INFO] running `Command { std: "docker" "start" "-a" "249a793a2edd74645e7d76530976f2dd2eef17cbdadd50e2a0903535d0852bec", kill_on_drop: false }`
[INFO] [stderr]    Compiling hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `name2`
[INFO] [stdout]  --> src/main.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 |   let name2: &str = "Your name";
[INFO] [stdout]   |       ^^^^^ help: if this is intentional, prefix it with an underscore: `_name2`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `age2`
[INFO] [stdout]  --> src/main.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 |   let age2: i64 = 99;
[INFO] [stdout]   |       ^^^^ help: if this is intentional, prefix it with an underscore: `_age2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cat`
[INFO] [stdout]   --> src/main.rs:20:7
[INFO] [stdout]    |
[INFO] [stdout] 20 |   let cat: char = '😺';
[INFO] [stdout]    |       ^^^ help: if this is intentional, prefix it with an underscore: `_cat`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `y` is assigned to, but never used
[INFO] [stdout]   --> src/main.rs:77:7
[INFO] [stdout]    |
[INFO] [stdout] 77 |   let y: &str;
[INFO] [stdout]    |       ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_y` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y` is never read
[INFO] [stdout]   --> src/main.rs:78:3
[INFO] [stdout]    |
[INFO] [stdout] 78 |   y = "10";
[INFO] [stdout]    |   ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/main.rs:81:7
[INFO] [stdout]    |
[INFO] [stdout] 81 |   let x = 100;
[INFO] [stdout]    |       ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main1` is never used
[INFO] [stdout]  --> src/main.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn main1() {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]   --> src/main.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn add(x: i32, y: i32) -> i32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main2` is never used
[INFO] [stdout]   --> src/main.rs:50:4
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn main2() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `string_length` is never used
[INFO] [stdout]   --> src/main.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn string_length(s: &String) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main3` is never used
[INFO] [stdout]   --> src/main.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn main3() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main4` is never used
[INFO] [stdout]   --> src/main.rs:87:4
[INFO] [stdout]    |
[INFO] [stdout] 87 | fn main4() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]   --> src/main.rs:97:4
[INFO] [stdout]    |
[INFO] [stdout] 97 | fn test(x: i32) -> i32 {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test2` is never used
[INFO] [stdout]    --> src/main.rs:108:4
[INFO] [stdout]     |
[INFO] [stdout] 108 | fn test2(x: i32) -> i32 {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Sample` is never constructed
[INFO] [stdout]    --> src/main.rs:121:8
[INFO] [stdout]     |
[INFO] [stdout] 121 | struct Sample {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `inc`, and `add` are never used
[INFO] [stdout]    --> src/main.rs:125:6
[INFO] [stdout]     |
[INFO] [stdout] 124 | impl Sample {
[INFO] [stdout]     | ----------- associated items in this implementation
[INFO] [stdout] 125 |   fn new(x: i32) -> Sample {
[INFO] [stdout]     |      ^^^
[INFO] [stdout] ...
[INFO] [stdout] 128 |   fn inc(&self) -> i32 {
[INFO] [stdout]     |      ^^^
[INFO] [stdout] ...
[INFO] [stdout] 131 |   fn add(&self, x: i32) -> i32 {
[INFO] [stdout]     |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main5` is never used
[INFO] [stdout]    --> src/main.rs:136:4
[INFO] [stdout]     |
[INFO] [stdout] 136 | fn main5() {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "249a793a2edd74645e7d76530976f2dd2eef17cbdadd50e2a0903535d0852bec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "249a793a2edd74645e7d76530976f2dd2eef17cbdadd50e2a0903535d0852bec", kill_on_drop: false }`
[INFO] [stdout] 249a793a2edd74645e7d76530976f2dd2eef17cbdadd50e2a0903535d0852bec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5e4273472e1b2f223618a9b3def795f6224f241d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 803a8eb3b77c63a68c25d9fbacf0eab301b3a7f77f9eca3c50836fd864a2ed94
[INFO] running `Command { std: "docker" "start" "-a" "803a8eb3b77c63a68c25d9fbacf0eab301b3a7f77f9eca3c50836fd864a2ed94", kill_on_drop: false }`
[INFO] [stderr]    Compiling hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `name2`
[INFO] [stdout]  --> src/main.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 |   let name2: &str = "Your name";
[INFO] [stdout]   |       ^^^^^ help: if this is intentional, prefix it with an underscore: `_name2`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `age2`
[INFO] [stdout]  --> src/main.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 |   let age2: i64 = 99;
[INFO] [stdout]   |       ^^^^ help: if this is intentional, prefix it with an underscore: `_age2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cat`
[INFO] [stdout]   --> src/main.rs:20:7
[INFO] [stdout]    |
[INFO] [stdout] 20 |   let cat: char = '😺';
[INFO] [stdout]    |       ^^^ help: if this is intentional, prefix it with an underscore: `_cat`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `y` is assigned to, but never used
[INFO] [stdout]   --> src/main.rs:77:7
[INFO] [stdout]    |
[INFO] [stdout] 77 |   let y: &str;
[INFO] [stdout]    |       ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_y` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y` is never read
[INFO] [stdout]   --> src/main.rs:78:3
[INFO] [stdout]    |
[INFO] [stdout] 78 |   y = "10";
[INFO] [stdout]    |   ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/main.rs:81:7
[INFO] [stdout]    |
[INFO] [stdout] 81 |   let x = 100;
[INFO] [stdout]    |       ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main1` is never used
[INFO] [stdout]  --> src/main.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn main1() {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]   --> src/main.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn add(x: i32, y: i32) -> i32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main2` is never used
[INFO] [stdout]   --> src/main.rs:50:4
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn main2() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `string_length` is never used
[INFO] [stdout]   --> src/main.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn string_length(s: &String) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main3` is never used
[INFO] [stdout]   --> src/main.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn main3() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main4` is never used
[INFO] [stdout]   --> src/main.rs:87:4
[INFO] [stdout]    |
[INFO] [stdout] 87 | fn main4() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]   --> src/main.rs:97:4
[INFO] [stdout]    |
[INFO] [stdout] 97 | fn test(x: i32) -> i32 {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test2` is never used
[INFO] [stdout]    --> src/main.rs:108:4
[INFO] [stdout]     |
[INFO] [stdout] 108 | fn test2(x: i32) -> i32 {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Sample` is never constructed
[INFO] [stdout]    --> src/main.rs:121:8
[INFO] [stdout]     |
[INFO] [stdout] 121 | struct Sample {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `inc`, and `add` are never used
[INFO] [stdout]    --> src/main.rs:125:6
[INFO] [stdout]     |
[INFO] [stdout] 124 | impl Sample {
[INFO] [stdout]     | ----------- associated items in this implementation
[INFO] [stdout] 125 |   fn new(x: i32) -> Sample {
[INFO] [stdout]     |      ^^^
[INFO] [stdout] ...
[INFO] [stdout] 128 |   fn inc(&self) -> i32 {
[INFO] [stdout]     |      ^^^
[INFO] [stdout] ...
[INFO] [stdout] 131 |   fn add(&self, x: i32) -> i32 {
[INFO] [stdout]     |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main5` is never used
[INFO] [stdout]    --> src/main.rs:136:4
[INFO] [stdout]     |
[INFO] [stdout] 136 | fn main5() {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "803a8eb3b77c63a68c25d9fbacf0eab301b3a7f77f9eca3c50836fd864a2ed94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "803a8eb3b77c63a68c25d9fbacf0eab301b3a7f77f9eca3c50836fd864a2ed94", kill_on_drop: false }`
[INFO] [stdout] 803a8eb3b77c63a68c25d9fbacf0eab301b3a7f77f9eca3c50836fd864a2ed94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5e4273472e1b2f223618a9b3def795f6224f241d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ba9fbafc3f93b0eac2c2761eef160b2b6a5c911216e68f4b493ed8eae1b1aba3
[INFO] running `Command { std: "docker" "start" "-a" "ba9fbafc3f93b0eac2c2761eef160b2b6a5c911216e68f4b493ed8eae1b1aba3", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `name2`
[INFO] [stderr]  --> src/main.rs:5:7
[INFO] [stderr]   |
[INFO] [stderr] 5 |   let name2: &str = "Your name";
[INFO] [stderr]   |       ^^^^^ help: if this is intentional, prefix it with an underscore: `_name2`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `age2`
[INFO] [stderr]  --> src/main.rs:8:7
[INFO] [stderr]   |
[INFO] [stderr] 8 |   let age2: i64 = 99;
[INFO] [stderr]   |       ^^^^ help: if this is intentional, prefix it with an underscore: `_age2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cat`
[INFO] [stderr]   --> src/main.rs:20:7
[INFO] [stderr]    |
[INFO] [stderr] 20 |   let cat: char = '😺';
[INFO] [stderr]    |       ^^^ help: if this is intentional, prefix it with an underscore: `_cat`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `y` is assigned to, but never used
[INFO] [stderr]   --> src/main.rs:77:7
[INFO] [stderr]    |
[INFO] [stderr] 77 |   let y: &str;
[INFO] [stderr]    |       ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_y` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `y` is never read
[INFO] [stderr]   --> src/main.rs:78:3
[INFO] [stderr]    |
[INFO] [stderr] 78 |   y = "10";
[INFO] [stderr]    |   ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/main.rs:81:7
[INFO] [stderr]    |
[INFO] [stderr] 81 |   let x = 100;
[INFO] [stderr]    |       ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: function `main1` is never used
[INFO] [stderr]  --> src/main.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | fn main1() {
[INFO] [stderr]   |    ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `add` is never used
[INFO] [stderr]   --> src/main.rs:45:4
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn add(x: i32, y: i32) -> i32 {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `main2` is never used
[INFO] [stderr]   --> src/main.rs:50:4
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn main2() {
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `string_length` is never used
[INFO] [stderr]   --> src/main.rs:65:4
[INFO] [stderr]    |
[INFO] [stderr] 65 | fn string_length(s: &String) -> usize {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `main3` is never used
[INFO] [stderr]   --> src/main.rs:71:4
[INFO] [stderr]    |
[INFO] [stderr] 71 | fn main3() {
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `main4` is never used
[INFO] [stderr]   --> src/main.rs:87:4
[INFO] [stderr]    |
[INFO] [stderr] 87 | fn main4() {
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `test` is never used
[INFO] [stderr]   --> src/main.rs:97:4
[INFO] [stderr]    |
[INFO] [stderr] 97 | fn test(x: i32) -> i32 {
[INFO] [stderr]    |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `test2` is never used
[INFO] [stderr]    --> src/main.rs:108:4
[INFO] [stderr]     |
[INFO] [stderr] 108 | fn test2(x: i32) -> i32 {
[INFO] [stderr]     |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Sample` is never constructed
[INFO] [stderr]    --> src/main.rs:121:8
[INFO] [stderr]     |
[INFO] [stderr] 121 | struct Sample {
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `inc`, and `add` are never used
[INFO] [stderr]    --> src/main.rs:125:6
[INFO] [stderr]     |
[INFO] [stderr] 124 | impl Sample {
[INFO] [stderr]     | ----------- associated items in this implementation
[INFO] [stderr] 125 |   fn new(x: i32) -> Sample {
[INFO] [stderr]     |      ^^^
[INFO] [stderr] ...
[INFO] [stderr] 128 |   fn inc(&self) -> i32 {
[INFO] [stderr]     |      ^^^
[INFO] [stderr] ...
[INFO] [stderr] 131 |   fn add(&self, x: i32) -> i32 {
[INFO] [stderr]     |      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `main5` is never used
[INFO] [stderr]    --> src/main.rs:136:4
[INFO] [stderr]     |
[INFO] [stderr] 136 | fn main5() {
[INFO] [stderr]     |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `hello` (bin "hello" test) generated 17 warnings (run `cargo fix --bin "hello" --tests` to apply 4 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/hello-0233574d2e8d3221)
[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" "ba9fbafc3f93b0eac2c2761eef160b2b6a5c911216e68f4b493ed8eae1b1aba3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba9fbafc3f93b0eac2c2761eef160b2b6a5c911216e68f4b493ed8eae1b1aba3", kill_on_drop: false }`
[INFO] [stdout] ba9fbafc3f93b0eac2c2761eef160b2b6a5c911216e68f4b493ed8eae1b1aba3