[INFO] cloning repository https://github.com/vantohuu/rust-lesson-1
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vantohuu/rust-lesson-1" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvantohuu%2Frust-lesson-1", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvantohuu%2Frust-lesson-1'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 96acde0e5bfc293bb19ade04fe186065f85e8b4c
[INFO] checking vantohuu/rust-lesson-1 against try#a75eafceea413a1b40c0e0769db85e08ec17160b for pr-133925
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvantohuu%2Frust-lesson-1" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vantohuu/rust-lesson-1 on toolchain a75eafceea413a1b40c0e0769db85e08ec17160b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a75eafceea413a1b40c0e0769db85e08ec17160b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vantohuu/rust-lesson-1
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/vantohuu/rust-lesson-1
[INFO] tweaked toml for git repo https://github.com/vantohuu/rust-lesson-1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/vantohuu/rust-lesson-1 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" "+a75eafceea413a1b40c0e0769db85e08ec17160b" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+a75eafceea413a1b40c0e0769db85e08ec17160b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 13faf563205305fad0fcbcbdec4d9cbb6a4e152e72e3dcfc05a15de8f77821ac
[INFO] running `Command { std: "docker" "start" "-a" "13faf563205305fad0fcbcbdec4d9cbb6a4e152e72e3dcfc05a15de8f77821ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "13faf563205305fad0fcbcbdec4d9cbb6a4e152e72e3dcfc05a15de8f77821ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13faf563205305fad0fcbcbdec4d9cbb6a4e152e72e3dcfc05a15de8f77821ac", kill_on_drop: false }`
[INFO] [stdout] 13faf563205305fad0fcbcbdec4d9cbb6a4e152e72e3dcfc05a15de8f77821ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+a75eafceea413a1b40c0e0769db85e08ec17160b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aa6351e60e55c8f97740f408618858bdc1d69479d870c80d7ab526f014e7b7ab
[INFO] running `Command { std: "docker" "start" "-a" "aa6351e60e55c8f97740f408618858bdc1d69479d870c80d7ab526f014e7b7ab", kill_on_drop: false }`
[INFO] [stderr]     Checking basic-of-rust v0.1.0 (/opt/rustwide/workdir/exercises/basic-of-rust)
[INFO] [stderr]     Checking Rust-Bootcamp-2023 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `cmp::Reverse`
[INFO] [stdout]  --> exercises/basic-of-rust/src/strings.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{cmp::Reverse, usize};
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cmp::Reverse`
[INFO] [stdout]  --> exercises/basic-of-rust/src/strings.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{cmp::Reverse, usize};
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> exercises/basic-of-rust/src/strings.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let mut s: String = input.chars().rev().collect();
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> exercises/basic-of-rust/src/strings.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let mut s: String = word.chars().rev().collect();
[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]   --> exercises/basic-of-rust/src/strings.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let mut s: String = input.chars().rev().collect();
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cmp::Reverse`
[INFO] [stdout]  --> exercises/basic-of-rust/src/strings.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{cmp::Reverse, usize};
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `basic-of-rust` (lib); 2 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/a75eafceea413a1b40c0e0769db85e08ec17160b/bin/rustc --crate-name basic_of_rust --edition=2021 exercises/basic-of-rust/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=7f5377e6fedbb034 -C extra-filename=-15606d8888ecb7fe --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] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> exercises/basic-of-rust/src/strings.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let mut s: String = input.chars().rev().collect();
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> exercises/basic-of-rust/src/strings.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let mut s: String = word.chars().rev().collect();
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "aa6351e60e55c8f97740f408618858bdc1d69479d870c80d7ab526f014e7b7ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa6351e60e55c8f97740f408618858bdc1d69479d870c80d7ab526f014e7b7ab", kill_on_drop: false }`
[INFO] [stdout] aa6351e60e55c8f97740f408618858bdc1d69479d870c80d7ab526f014e7b7ab