[INFO] fetching crate serde_gelf 0.1.6...
[INFO] checking serde_gelf-0.1.6 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate serde_gelf 0.1.6 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate serde_gelf 0.1.6 on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_gelf 0.1.6
[INFO] finished tweaking crates.io crate serde_gelf 0.1.6
[INFO] tweaked toml for crates.io crate serde_gelf 0.1.6 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate serde_gelf 0.1.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syn v0.15.38
[INFO] [stderr]   Downloaded autocfg v0.1.4
[INFO] [stderr]   Downloaded libc v0.2.58
[INFO] [stderr]   Downloaded serde-value-utils v0.1.0
[INFO] [stderr]   Downloaded serde v1.0.93
[INFO] [stderr]   Downloaded serde_derive v1.0.93
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] adca4c4f50c086a76c3cf0dfa743f52c13c7837d6542e287ea5e44c20b315c3f
[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" "adca4c4f50c086a76c3cf0dfa743f52c13c7837d6542e287ea5e44c20b315c3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "adca4c4f50c086a76c3cf0dfa743f52c13c7837d6542e287ea5e44c20b315c3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adca4c4f50c086a76c3cf0dfa743f52c13c7837d6542e287ea5e44c20b315c3f", kill_on_drop: false }`
[INFO] [stdout] adca4c4f50c086a76c3cf0dfa743f52c13c7837d6542e287ea5e44c20b315c3f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3c50b09f78659c333447d6fcfb0b0427c145f2e2d7dd0644b240d681cf38e71c
[INFO] running `Command { std: "docker" "start" "-a" "3c50b09f78659c333447d6fcfb0b0427c145f2e2d7dd0644b240d681cf38e71c", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling serde v1.0.93
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.38
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]    Compiling ryu v0.2.8
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]     Checking serde-value v0.6.0
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]    Compiling serde_derive v1.0.93
[INFO] [stderr]     Checking serde-value-utils v0.1.0
[INFO] [stderr]     Checking serde_gelf v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.97s
[INFO] running `Command { std: "docker" "inspect" "3c50b09f78659c333447d6fcfb0b0427c145f2e2d7dd0644b240d681cf38e71c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c50b09f78659c333447d6fcfb0b0427c145f2e2d7dd0644b240d681cf38e71c", kill_on_drop: false }`
[INFO] [stdout] 3c50b09f78659c333447d6fcfb0b0427c145f2e2d7dd0644b240d681cf38e71c