[INFO] cloning repository https://github.com/danieloluwadare/rust_tutorial
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/danieloluwadare/rust_tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanieloluwadare%2Frust_tutorial", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanieloluwadare%2Frust_tutorial'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3c276c0d250075b7fc48dd53147981b320fa1974
[INFO] checking danieloluwadare/rust_tutorial against master#8f08b3a32478b8d0507732800ecb548a76e0fd0c for pr-144157
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanieloluwadare%2Frust_tutorial" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/danieloluwadare/rust_tutorial
[INFO] finished tweaking git repo https://github.com/danieloluwadare/rust_tutorial
[INFO] tweaked toml for git repo https://github.com/danieloluwadare/rust_tutorial written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/danieloluwadare/rust_tutorial on toolchain 8f08b3a32478b8d0507732800ecb548a76e0fd0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8f08b3a32478b8d0507732800ecb548a76e0fd0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/danieloluwadare/rust_tutorial 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" "+8f08b3a32478b8d0507732800ecb548a76e0fd0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+8f08b3a32478b8d0507732800ecb548a76e0fd0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d1988aef5fd497c0df5d3d6000529db3d6ae5e1482a970dba035e49b56aa79d0
[INFO] running `Command { std: "docker" "start" "-a" "d1988aef5fd497c0df5d3d6000529db3d6ae5e1482a970dba035e49b56aa79d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d1988aef5fd497c0df5d3d6000529db3d6ae5e1482a970dba035e49b56aa79d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1988aef5fd497c0df5d3d6000529db3d6ae5e1482a970dba035e49b56aa79d0", kill_on_drop: false }`
[INFO] [stdout] d1988aef5fd497c0df5d3d6000529db3d6ae5e1482a970dba035e49b56aa79d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+8f08b3a32478b8d0507732800ecb548a76e0fd0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be4bb91744392cc72e8df05b55e1388f26f853d065365b89667f6a9610c4d334
[INFO] running `Command { std: "docker" "start" "-a" "be4bb91744392cc72e8df05b55e1388f26f853d065365b89667f6a9610c4d334", kill_on_drop: false }`
[INFO] [stderr]     Checking guessing_game v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/variables_tutorial.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | /     /**
[INFO] [stdout] 23 | |     Shadowing is different from marking a variable as mut, because we’ll get a compile-time error if we accidentally try to reassign to this
[INFO] [stdout] 24 | |     variable without using the let keyword. By using let, we can perform a few transformations on a value but have the variable be immutable
[INFO] [stdout] 25 | |     after those transformations have been completed.
[INFO] [stdout] ...  |
[INFO] [stdout] 32 | |      */
[INFO] [stdout]    | |_______^
[INFO] [stdout] 33 |       let m = 5;
[INFO] [stdout]    |       ---------- rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `/* */` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/data_type_tutorial.rs:104:5
[INFO] [stdout]     |
[INFO] [stdout] 104 | /     /**
[INFO] [stdout] 105 | |         You write an array’s type using square brackets with the type of each element, a semicolon,
[INFO] [stdout] 106 | |         and then the number of elements in the array, like so:
[INFO] [stdout] 107 | |     */
[INFO] [stdout]     | |______^
[INFO] [stdout] 108 |       let a: [i32; 5] = [1, 2, 3, 4, 5];
[INFO] [stdout]     |       ---------------------------------- rustdoc does not generate documentation for statements
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `/* */` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/variables_tutorial.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | /     /**
[INFO] [stdout] 23 | |     Shadowing is different from marking a variable as mut, because we’ll get a compile-time error if we accidentally try to reassign to this
[INFO] [stdout] 24 | |     variable without using the let keyword. By using let, we can perform a few transformations on a value but have the variable be immutable
[INFO] [stdout] 25 | |     after those transformations have been completed.
[INFO] [stdout] ...  |
[INFO] [stdout] 32 | |      */
[INFO] [stdout]    | |_______^
[INFO] [stdout] 33 |       let m = 5;
[INFO] [stdout]    |       ---------- rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `/* */` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/data_type_tutorial.rs:104:5
[INFO] [stdout]     |
[INFO] [stdout] 104 | /     /**
[INFO] [stdout] 105 | |         You write an array’s type using square brackets with the type of each element, a semicolon,
[INFO] [stdout] 106 | |         and then the number of elements in the array, like so:
[INFO] [stdout] 107 | |     */
[INFO] [stdout]     | |______^
[INFO] [stdout] 108 |       let a: [i32; 5] = [1, 2, 3, 4, 5];
[INFO] [stdout]     |       ---------------------------------- rustdoc does not generate documentation for statements
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `/* */` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/data_type_tutorial.rs:82:10
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let (x, y, z) = tup;
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/data_type_tutorial.rs:82:10
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let (x, y, z) = tup;
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/data_type_tutorial.rs:82:16
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let (x, y, z) = tup;
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> src/data_type_tutorial.rs:82:16
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let (x, y, z) = tup;
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/data_type_tutorial.rs:99:9
[INFO] [stdout]    |
[INFO] [stdout] 99 |     let a = [1, 2, 3, 4, 5];
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/data_type_tutorial.rs:99:9
[INFO] [stdout]    |
[INFO] [stdout] 99 |     let a = [1, 2, 3, 4, 5];
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `months`
[INFO] [stdout]    --> src/data_type_tutorial.rs:101:9
[INFO] [stdout]     |
[INFO] [stdout] 101 |     let months = ["January", "February", "March", "April", "May", "June", "July",
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_months`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `months`
[INFO] [stdout]    --> src/data_type_tutorial.rs:101:9
[INFO] [stdout]     |
[INFO] [stdout] 101 |     let months = ["January", "February", "March", "April", "May", "June", "July",
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_months`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `my_println` is never used
[INFO] [stdout]  --> src/function_tutorial.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub(crate) fn my_println(){
[INFO] [stdout]   |               ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `my_println` is never used
[INFO] [stdout]  --> src/function_tutorial.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub(crate) fn my_println(){
[INFO] [stdout]   |               ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `guessing_game` (bin "guessing_game"); 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to parse process output: `/opt/rustwide/rustup-home/toolchains/8f08b3a32478b8d0507732800ecb548a76e0fd0c/bin/rustc --crate-name guessing_game --edition=2021 src/main.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=23e55130191567d9 -C extra-filename=-8869cc4e7ed9ddea --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints=forbid` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `guessing_game` (bin "guessing_game" test); 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to parse process output: `/opt/rustwide/rustup-home/toolchains/8f08b3a32478b8d0507732800ecb548a76e0fd0c/bin/rustc --crate-name guessing_game --edition=2021 src/main.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --test --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=7663fb9542e7ccf9 -C extra-filename=-e4f09b094eb1c6bc --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints=forbid` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "be4bb91744392cc72e8df05b55e1388f26f853d065365b89667f6a9610c4d334", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be4bb91744392cc72e8df05b55e1388f26f853d065365b89667f6a9610c4d334", kill_on_drop: false }`
[INFO] [stdout] be4bb91744392cc72e8df05b55e1388f26f853d065365b89667f6a9610c4d334