[INFO] crate serde_tuple 0.4.0 is already in cache [INFO] checking serde_tuple-0.4.0 against try#13f916f63bc6575d5ff1f989237dfabe88981368 for pr-69880 [INFO] extracting crate serde_tuple 0.4.0 into /workspace/builds/worker-8/source [INFO] validating manifest of crates.io crate serde_tuple 0.4.0 on toolchain 13f916f63bc6575d5ff1f989237dfabe88981368 [INFO] running `"/workspace/cargo-home/bin/cargo" "+13f916f63bc6575d5ff1f989237dfabe88981368" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking crates.io crate serde_tuple 0.4.0 [INFO] finished tweaking crates.io crate serde_tuple 0.4.0 [INFO] tweaked toml for crates.io crate serde_tuple 0.4.0 written to /workspace/builds/worker-8/source/Cargo.toml [INFO] crate crates.io crate serde_tuple 0.4.0 already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+13f916f63bc6575d5ff1f989237dfabe88981368" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+13f916f63bc6575d5ff1f989237dfabe88981368" "check" "--frozen" "--all" "--all-targets"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 336bb094c84e49ff31af3f8a84ad63682eb220fedb4b7f50c7574cc850a0bd5a [INFO] running `"docker" "start" "-a" "336bb094c84e49ff31af3f8a84ad63682eb220fedb4b7f50c7574cc850a0bd5a"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling syn v0.15.36 [INFO] [stderr] Compiling serde v1.0.92 [INFO] [stderr] Checking proc-macro2 v1.0.7 [INFO] [stderr] Compiling syn v1.0.13 [INFO] [stderr] Checking quote v1.0.2 [INFO] [stderr] Compiling serde_derive v1.0.92 [INFO] [stderr] Checking serde_json v1.0.39 [INFO] [stderr] Checking serde_tuple v0.4.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused import: `std::borrow::Cow` [INFO] [stderr] --> examples/simple.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | use std::borrow::Cow; [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Ok` [INFO] [stderr] --> examples/simple.rs:20:8 [INFO] [stderr] | [INFO] [stderr] 20 | struct Ok; [INFO] [stderr] | ^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 50.96s [INFO] running `"docker" "inspect" "336bb094c84e49ff31af3f8a84ad63682eb220fedb4b7f50c7574cc850a0bd5a"` [INFO] running `"docker" "rm" "-f" "336bb094c84e49ff31af3f8a84ad63682eb220fedb4b7f50c7574cc850a0bd5a"` [INFO] [stdout] 336bb094c84e49ff31af3f8a84ad63682eb220fedb4b7f50c7574cc850a0bd5a