[INFO] fetching crate cni_format 0.5.0...
[INFO] checking cni_format-0.5.0 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate cni_format 0.5.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate cni_format 0.5.0 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cni_format 0.5.0
[INFO] finished tweaking crates.io crate cni_format 0.5.0
[INFO] tweaked toml for crates.io crate cni_format 0.5.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate cni_format 0.5.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] abff0e23eb2f11d701799730b668f691276580b48986249fb701fb53ad5b9286
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "abff0e23eb2f11d701799730b668f691276580b48986249fb701fb53ad5b9286", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "abff0e23eb2f11d701799730b668f691276580b48986249fb701fb53ad5b9286", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abff0e23eb2f11d701799730b668f691276580b48986249fb701fb53ad5b9286", kill_on_drop: false }`
[INFO] [stdout] abff0e23eb2f11d701799730b668f691276580b48986249fb701fb53ad5b9286
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f44f7531689eaf02bce6825576bbefb3011fc5018d93e099645232267d9f6b72
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f44f7531689eaf02bce6825576bbefb3011fc5018d93e099645232267d9f6b72", kill_on_drop: false }`
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking utf v0.1.6
[INFO] [stderr]     Checking cni_format v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> examples/formatter.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0583]: file not found for module `tests`
[INFO] [stdout]   --> src/lib.rs:81:1
[INFO] [stdout]    |
[INFO] [stdout] 81 | mod tests;
[INFO] [stdout]    | ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: to create the module `tests`, create file "src/tests.rs" or "src/tests/mod.rs"
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: external crate `serde_json` unused in `cni_format`: remove the dependency or add `use serde_json as _;`
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     unused_crate_dependencies,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   = help: remove unnecessary dependency `serde_json`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: external crate `utf` unused in `cni_format`: remove the dependency or add `use utf as _;`
[INFO] [stdout]   |
[INFO] [stdout]   = help: remove unnecessary dependency `utf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0583`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cni_format`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "f44f7531689eaf02bce6825576bbefb3011fc5018d93e099645232267d9f6b72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f44f7531689eaf02bce6825576bbefb3011fc5018d93e099645232267d9f6b72", kill_on_drop: false }`
[INFO] [stdout] f44f7531689eaf02bce6825576bbefb3011fc5018d93e099645232267d9f6b72