[INFO] cloning repository https://github.com/haiduong183724/rust-excerise
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/haiduong183724/rust-excerise" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhaiduong183724%2Frust-excerise", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhaiduong183724%2Frust-excerise'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9ae5092713cbdf28a8ff2ce3dfa57020343ce3ce
[INFO] checking haiduong183724/rust-excerise against master#d93f678fa55842cccd2f091deccd93e9494b3764 for pr-138844
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhaiduong183724%2Frust-excerise" "/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/haiduong183724/rust-excerise on toolchain d93f678fa55842cccd2f091deccd93e9494b3764
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d93f678fa55842cccd2f091deccd93e9494b3764" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/haiduong183724/rust-excerise
[INFO] finished tweaking git repo https://github.com/haiduong183724/rust-excerise
[INFO] tweaked toml for git repo https://github.com/haiduong183724/rust-excerise written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/haiduong183724/rust-excerise 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" "+d93f678fa55842cccd2f091deccd93e9494b3764" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded snafu-derive v0.8.3
[INFO] [stderr]   Downloaded snafu v0.8.3
[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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+d93f678fa55842cccd2f091deccd93e9494b3764" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 647800634fe8e185e357ba5d4c08b8afecb80b8bab8038f803ca416085e17065
[INFO] running `Command { std: "docker" "start" "-a" "647800634fe8e185e357ba5d4c08b8afecb80b8bab8038f803ca416085e17065", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "647800634fe8e185e357ba5d4c08b8afecb80b8bab8038f803ca416085e17065", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "647800634fe8e185e357ba5d4c08b8afecb80b8bab8038f803ca416085e17065", kill_on_drop: false }`
[INFO] [stdout] 647800634fe8e185e357ba5d4c08b8afecb80b8bab8038f803ca416085e17065
[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" "-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+d93f678fa55842cccd2f091deccd93e9494b3764" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 212e14d318698cd7f664266a99beba04d008bce13e75f8215708e4e82186ce10
[INFO] running `Command { std: "docker" "start" "-a" "212e14d318698cd7f664266a99beba04d008bce13e75f8215708e4e82186ce10", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]     Checking lesson3 v0.1.0 (/opt/rustwide/workdir/lesson3)
[INFO] [stderr]     Checking lesson1 v0.1.0 (/opt/rustwide/workdir/lesson1)
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]  --> lesson3/src/exercise5.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut result = 0;
[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: struct `Counter` is never constructed
[INFO] [stdout]  --> lesson3/src/exercise1.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     struct Counter {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> lesson3/src/exercise1.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 7 |     impl Counter {
[INFO] [stdout]   |     ------------ associated function in this implementation
[INFO] [stdout] 8 |         fn new(max: u32) -> Counter {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> lesson3/src/exercise1.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn run() {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> lesson3/src/exercise2.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn run() {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> lesson3/src/exercise3.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> lesson3/src/exercise4.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]  --> lesson3/src/exercise5.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut result = 0;
[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: struct `Counter` is never constructed
[INFO] [stdout]  --> lesson3/src/exercise1.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     struct Counter {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> lesson3/src/exercise1.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 7 |     impl Counter {
[INFO] [stdout]   |     ------------ associated function in this implementation
[INFO] [stdout] 8 |         fn new(max: u32) -> Counter {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> lesson3/src/exercise1.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn run() {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> lesson3/src/exercise2.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn run() {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> lesson3/src/exercise3.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> lesson3/src/exercise4.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.68
[INFO] [stdout] error: failed to build archive at `/opt/rustwide/target/debug/deps/libsyn-a6cd8b08caf92e8d.rlib`: No space left on device (os error 28)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `syn` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "212e14d318698cd7f664266a99beba04d008bce13e75f8215708e4e82186ce10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "212e14d318698cd7f664266a99beba04d008bce13e75f8215708e4e82186ce10", kill_on_drop: false }`
[INFO] [stdout] 212e14d318698cd7f664266a99beba04d008bce13e75f8215708e4e82186ce10