[INFO] cloning repository https://github.com/alerighi/tabox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alerighi/tabox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falerighi%2Ftabox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falerighi%2Ftabox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0c7f79099b7d8bcfa8cf0b9f0c64796593eefbba
[INFO] checking alerighi/tabox against try#15a786332e2f0dd343b226ab6bb8ec028a350f73 for pr-81782
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falerighi%2Ftabox" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alerighi/tabox on toolchain 15a786332e2f0dd343b226ab6bb8ec028a350f73
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/alerighi/tabox
[INFO] finished tweaking git repo https://github.com/alerighi/tabox
[INFO] tweaked toml for git repo https://github.com/alerighi/tabox written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/alerighi/tabox already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded core_affinity v0.5.9
[INFO] [stderr]   Downloaded seccomp-sys v0.1.3
[INFO] [stderr]   Downloaded nix v0.16.0
[INFO] running `Command { std: "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" "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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f80efff1d3efd44ca717e04a740954cfdc55a2515ff4e96bf1b180f274d2ca44
[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" "f80efff1d3efd44ca717e04a740954cfdc55a2515ff4e96bf1b180f274d2ca44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f80efff1d3efd44ca717e04a740954cfdc55a2515ff4e96bf1b180f274d2ca44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f80efff1d3efd44ca717e04a740954cfdc55a2515ff4e96bf1b180f274d2ca44", kill_on_drop: false }`
[INFO] [stdout] f80efff1d3efd44ca717e04a740954cfdc55a2515ff4e96bf1b180f274d2ca44
[INFO] running `Command { std: "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" "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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 66b33bc90559c7da6783eec06e2d0b526313c41ba95f978f77e12f51dcd3ca6b
[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" "66b33bc90559c7da6783eec06e2d0b526313c41ba95f978f77e12f51dcd3ca6b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling syn v1.0.9
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling seccomp-sys v0.1.3
[INFO] [stderr]    Compiling nix v0.16.0
[INFO] [stderr]     Checking arc-swap v0.4.4
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling serde v1.0.103
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking errno v0.2.4
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]     Checking core_affinity v0.5.9
[INFO] [stderr]     Checking signal-hook v0.1.13
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling serde_derive v1.0.103
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking serde_json v1.0.42
[INFO] [stderr]     Checking tabox v0.1.15 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 51.85s
[INFO] running `Command { std: "docker" "inspect" "66b33bc90559c7da6783eec06e2d0b526313c41ba95f978f77e12f51dcd3ca6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66b33bc90559c7da6783eec06e2d0b526313c41ba95f978f77e12f51dcd3ca6b", kill_on_drop: false }`
[INFO] [stdout] 66b33bc90559c7da6783eec06e2d0b526313c41ba95f978f77e12f51dcd3ca6b