[INFO] cloning repository https://github.com/volodfast/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/volodfast/rust-tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvolodfast%2Frust-tutorial", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvolodfast%2Frust-tutorial'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 18648ab8a7f015e3ef062774362ac2dd1f8493b0 [INFO] checking volodfast/rust-tutorial against try#da0275e101cdc809ce291ed8b64d6f82c6b65467 for pr-134276 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvolodfast%2Frust-tutorial" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/volodfast/rust-tutorial on toolchain da0275e101cdc809ce291ed8b64d6f82c6b65467 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+da0275e101cdc809ce291ed8b64d6f82c6b65467" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/volodfast/rust-tutorial [INFO] finished tweaking git repo https://github.com/volodfast/rust-tutorial [INFO] tweaked toml for git repo https://github.com/volodfast/rust-tutorial written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/volodfast/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" "+da0275e101cdc809ce291ed8b64d6f82c6b65467" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+da0275e101cdc809ce291ed8b64d6f82c6b65467" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 08b9b99920fe4f19c6f4c30fff5941e6e5df0a7ae26726d9577c8e4174767cea [INFO] running `Command { std: "docker" "start" "-a" "08b9b99920fe4f19c6f4c30fff5941e6e5df0a7ae26726d9577c8e4174767cea", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "08b9b99920fe4f19c6f4c30fff5941e6e5df0a7ae26726d9577c8e4174767cea", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "08b9b99920fe4f19c6f4c30fff5941e6e5df0a7ae26726d9577c8e4174767cea", kill_on_drop: false }` [INFO] [stdout] 08b9b99920fe4f19c6f4c30fff5941e6e5df0a7ae26726d9577c8e4174767cea [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+da0275e101cdc809ce291ed8b64d6f82c6b65467" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] bd372815884b89bc68892a950fe670bcb673beb421f76c78726760ecfc7c6c59 [INFO] running `Command { std: "docker" "start" "-a" "bd372815884b89bc68892a950fe670bcb673beb421f76c78726760ecfc7c6c59", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.105 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Checking ppv-lite86 v0.2.15 [INFO] [stderr] Checking getrandom v0.2.3 [INFO] [stderr] Checking rand_core v0.6.3 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.4 [INFO] [stderr] Checking rust-tutorial v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: creating a shared reference to mutable static is discouraged [INFO] [stdout] --> src/advanced_features/unsafe_rust.rs:91:29 [INFO] [stdout] | [INFO] [stdout] 91 | println!("COUNTER: {}", COUNTER); [INFO] [stdout] | ^^^^^^^ shared reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stdout] = note: `#[warn(static_mut_refs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: creating a shared reference to mutable static is discouraged [INFO] [stdout] --> src/advanced_features/unsafe_rust.rs:91:29 [INFO] [stdout] | [INFO] [stdout] 91 | println!("COUNTER: {}", COUNTER); [INFO] [stdout] | ^^^^^^^ shared reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives [INFO] [stdout] = note: `#[warn(static_mut_refs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.36s [INFO] running `Command { std: "docker" "inspect" "bd372815884b89bc68892a950fe670bcb673beb421f76c78726760ecfc7c6c59", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bd372815884b89bc68892a950fe670bcb673beb421f76c78726760ecfc7c6c59", kill_on_drop: false }` [INFO] [stdout] bd372815884b89bc68892a950fe670bcb673beb421f76c78726760ecfc7c6c59