[INFO] cloning repository https://github.com/rust-learn/trait
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rust-learn/trait" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-learn%2Ftrait", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-learn%2Ftrait'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6291735a1d4a33535400b2920b115f7d2bb73e6f
[INFO] checking rust-learn/trait against try#ef5216c337126ffe24d074826f4023948c4a9b8e for pr-137033
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-learn%2Ftrait" "/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/rust-learn/trait on toolchain ef5216c337126ffe24d074826f4023948c4a9b8e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ef5216c337126ffe24d074826f4023948c4a9b8e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rust-learn/trait
[INFO] finished tweaking git repo https://github.com/rust-learn/trait
[INFO] tweaked toml for git repo https://github.com/rust-learn/trait written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/rust-learn/trait 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" "+ef5216c337126ffe24d074826f4023948c4a9b8e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+ef5216c337126ffe24d074826f4023948c4a9b8e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fb660d77a51eee9a4b21c60a9017f423bf0aacd7435452b04fdf7ec91cd7585f
[INFO] running `Command { std: "docker" "start" "-a" "fb660d77a51eee9a4b21c60a9017f423bf0aacd7435452b04fdf7ec91cd7585f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb660d77a51eee9a4b21c60a9017f423bf0aacd7435452b04fdf7ec91cd7585f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb660d77a51eee9a4b21c60a9017f423bf0aacd7435452b04fdf7ec91cd7585f", kill_on_drop: false }`
[INFO] [stdout] fb660d77a51eee9a4b21c60a9017f423bf0aacd7435452b04fdf7ec91cd7585f
[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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+ef5216c337126ffe24d074826f4023948c4a9b8e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 248f9cddd93af1f958da878863cd9fcba03f157c19855544ade57624afe2aeee
[INFO] running `Command { std: "docker" "start" "-a" "248f9cddd93af1f958da878863cd9fcba03f157c19855544ade57624afe2aeee", kill_on_drop: false }`
[INFO] [stderr]     Checking traits v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `return_summarizable` is never used
[INFO] [stdout]   --> src/lib.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn return_summarizable() -> impl Summary {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `return_summarizable` is never used
[INFO] [stdout]   --> src/lib.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn return_summarizable() -> impl Summary {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not parse/generate dep info at: /opt/rustwide/target/debug/deps/traits-bb84496e61a1f989.d
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to write `/opt/rustwide/target/debug/.fingerprint/traits-bb84496e61a1f989/dep-lib-traits`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] running `Command { std: "docker" "inspect" "248f9cddd93af1f958da878863cd9fcba03f157c19855544ade57624afe2aeee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "248f9cddd93af1f958da878863cd9fcba03f157c19855544ade57624afe2aeee", kill_on_drop: false }`
[INFO] [stdout] 248f9cddd93af1f958da878863cd9fcba03f157c19855544ade57624afe2aeee