[INFO] fetching crate rtail 0.1.6...
[INFO] checking rtail-0.1.6 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate rtail 0.1.6 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate rtail 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 rtail 0.1.6
[INFO] finished tweaking crates.io crate rtail 0.1.6
[INFO] tweaked toml for crates.io crate rtail 0.1.6 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate rtail 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cfg-if v0.1.9
[INFO] [stderr]   Downloaded ctrlc v3.1.3
[INFO] [stderr]   Downloaded socket2 v0.3.11
[INFO] [stderr]   Downloaded clap v2.33.0
[INFO] [stderr]   Downloaded vec_map v0.8.1
[INFO] [stderr]   Downloaded atty v0.2.13
[INFO] [stderr]   Downloaded unicode-width v0.1.6
[INFO] [stderr]   Downloaded autocfg v0.1.6
[INFO] [stderr]   Downloaded cc v1.0.45
[INFO] [stderr]   Downloaded pkg-config v0.3.16
[INFO] [stderr]   Downloaded openssl-probe v0.1.2
[INFO] [stderr]   Downloaded vcpkg v0.2.7
[INFO] [stderr]   Downloaded schannel v0.1.16
[INFO] [stderr]   Downloaded yaml-rust v0.3.5
[INFO] [stderr]   Downloaded bitflags v1.1.0
[INFO] [stderr]   Downloaded nix v0.14.1
[INFO] [stderr]   Downloaded openssl-sys v0.9.49
[INFO] [stderr]   Downloaded libz-sys v1.0.25
[INFO] [stderr]   Downloaded libc v0.2.62
[INFO] [stderr]   Downloaded curl v0.4.23
[INFO] [stderr]   Downloaded curl-sys v0.4.21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] ca9b49f97dc9078b9a26b4e52fb1d7e07943a39f1caf3f98a5dba4d3cb2cc838
[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" "ca9b49f97dc9078b9a26b4e52fb1d7e07943a39f1caf3f98a5dba4d3cb2cc838", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca9b49f97dc9078b9a26b4e52fb1d7e07943a39f1caf3f98a5dba4d3cb2cc838", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca9b49f97dc9078b9a26b4e52fb1d7e07943a39f1caf3f98a5dba4d3cb2cc838", kill_on_drop: false }`
[INFO] [stdout] ca9b49f97dc9078b9a26b4e52fb1d7e07943a39f1caf3f98a5dba4d3cb2cc838
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] [stdout] 20129aaf9677b9cb1c8ad00083c9f4dbd6b267a73486882719f71b429b2e678d
[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" "20129aaf9677b9cb1c8ad00083c9f4dbd6b267a73486882719f71b429b2e678d", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling curl v0.4.23
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling curl-sys v0.4.21
[INFO] [stderr]     Checking socket2 v0.3.11
[INFO] [stderr]    Compiling openssl-sys v0.9.49
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking ctrlc v3.1.3
[INFO] [stderr]     Checking rtail v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.26s
[INFO] running `Command { std: "docker" "inspect" "20129aaf9677b9cb1c8ad00083c9f4dbd6b267a73486882719f71b429b2e678d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20129aaf9677b9cb1c8ad00083c9f4dbd6b267a73486882719f71b429b2e678d", kill_on_drop: false }`
[INFO] [stdout] 20129aaf9677b9cb1c8ad00083c9f4dbd6b267a73486882719f71b429b2e678d