[INFO] cloning repository https://github.com/sammerset/simple-rust-calculator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sammerset/simple-rust-calculator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsammerset%2Fsimple-rust-calculator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsammerset%2Fsimple-rust-calculator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eb8c5344c5cbf2eda00b96723fa2ad392477b695
[INFO] checking sammerset/simple-rust-calculator against try#b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b for pr-82781
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsammerset%2Fsimple-rust-calculator" "/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/sammerset/simple-rust-calculator 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/sammerset/simple-rust-calculator
[INFO] finished tweaking git repo https://github.com/sammerset/simple-rust-calculator
[INFO] tweaked toml for git repo https://github.com/sammerset/simple-rust-calculator written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/sammerset/simple-rust-calculator 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]     Blocking waiting for file lock on package cache
[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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 28991b018583dd0d1ddf9b0e2324c98d41a49652bc812c6e8ce8d2619b04ee8e
[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" "28991b018583dd0d1ddf9b0e2324c98d41a49652bc812c6e8ce8d2619b04ee8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "28991b018583dd0d1ddf9b0e2324c98d41a49652bc812c6e8ce8d2619b04ee8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28991b018583dd0d1ddf9b0e2324c98d41a49652bc812c6e8ce8d2619b04ee8e", kill_on_drop: false }`
[INFO] [stdout] 28991b018583dd0d1ddf9b0e2324c98d41a49652bc812c6e8ce8d2619b04ee8e
[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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 123f4afe83612fce55afc3d0339fb34c46cd87ae248e53e482c19cfa55bd3dbc
[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" "123f4afe83612fce55afc3d0339fb34c46cd87ae248e53e482c19cfa55bd3dbc", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling proc-macro2 v1.0.23
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking plugin v0.2.6
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking mustache v0.9.0
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]     Checking nickel v0.11.0
[INFO] [stderr]     Checking rust-smart-calc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.98s
[INFO] running `Command { std: "docker" "inspect" "123f4afe83612fce55afc3d0339fb34c46cd87ae248e53e482c19cfa55bd3dbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "123f4afe83612fce55afc3d0339fb34c46cd87ae248e53e482c19cfa55bd3dbc", kill_on_drop: false }`
[INFO] [stdout] 123f4afe83612fce55afc3d0339fb34c46cd87ae248e53e482c19cfa55bd3dbc