[INFO] cloning repository https://github.com/kan1-u/kani
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kan1-u/kani" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkan1-u%2Fkani", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkan1-u%2Fkani'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f24b87eb748d3075a029bce84c78a802e5ae10b8
[INFO] checking kan1-u/kani against try#b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b for pr-82781
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkan1-u%2Fkani" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kan1-u/kani on toolchain b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kan1-u/kani
[INFO] finished tweaking git repo https://github.com/kan1-u/kani
[INFO] tweaked toml for git repo https://github.com/kan1-u/kani written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/kan1-u/kani already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dirs-sys-next v0.1.2
[INFO] [stderr]   Downloaded funty v1.1.0
[INFO] [stderr]   Downloaded redox_users v0.4.0
[INFO] [stderr]   Downloaded rustyline v7.1.0
[INFO] [stderr]   Downloaded rustyline-derive v0.4.0
[INFO] [stderr]   Downloaded dirs-next v2.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 759f8b2d1db411f8e539be68a5fdaf7c1fc9e1030311c91febf926674a9bd644
[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" "759f8b2d1db411f8e539be68a5fdaf7c1fc9e1030311c91febf926674a9bd644", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "759f8b2d1db411f8e539be68a5fdaf7c1fc9e1030311c91febf926674a9bd644", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "759f8b2d1db411f8e539be68a5fdaf7c1fc9e1030311c91febf926674a9bd644", kill_on_drop: false }`
[INFO] [stdout] 759f8b2d1db411f8e539be68a5fdaf7c1fc9e1030311c91febf926674a9bd644
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5911b6896dd9c9eefd4640923c8cf9d973f1f5ea877c77bf3712d91ac4069267
[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" "5911b6896dd9c9eefd4640923c8cf9d973f1f5ea877c77bf3712d91ac4069267", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking unicode-segmentation v1.7.1
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling nom v6.1.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking lexical-core v0.7.4
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking nix v0.19.1
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking rustyline v7.1.0
[INFO] [stderr]     Checking kani-parser v0.2.0 (/opt/rustwide/workdir/kani-parser)
[INFO] [stderr]     Checking kani-evaluator v0.2.0 (/opt/rustwide/workdir/kani-evaluator)
[INFO] [stderr]    Compiling rustyline-derive v0.4.0
[INFO] [stderr]     Checking kani-cmd v0.2.0 (/opt/rustwide/workdir/kani-cmd)
[INFO] [stderr]     Checking kani-repl v0.2.0 (/opt/rustwide/workdir/kani-repl)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.74s
[INFO] running `Command { std: "docker" "inspect" "5911b6896dd9c9eefd4640923c8cf9d973f1f5ea877c77bf3712d91ac4069267", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5911b6896dd9c9eefd4640923c8cf9d973f1f5ea877c77bf3712d91ac4069267", kill_on_drop: false }`
[INFO] [stdout] 5911b6896dd9c9eefd4640923c8cf9d973f1f5ea877c77bf3712d91ac4069267