[INFO] cloning repository https://github.com/mitsuhiko/qq
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mitsuhiko/qq" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmitsuhiko%2Fqq", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmitsuhiko%2Fqq'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b2323ed7a929a179f9ea26f537e961a2e6f80107
[INFO] checking mitsuhiko/qq against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmitsuhiko%2Fqq" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mitsuhiko/qq 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 git repo https://github.com/mitsuhiko/qq
[INFO] finished tweaking git repo https://github.com/mitsuhiko/qq
[INFO] tweaked toml for git repo https://github.com/mitsuhiko/qq written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/mitsuhiko/qq 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]     Updating git repository `https://github.com/mitsuhiko/serde-value`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 749c277996b18467f99b0219be9910dc09323f8612d7413f4aad141ef18f8ab2
[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" "749c277996b18467f99b0219be9910dc09323f8612d7413f4aad141ef18f8ab2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "749c277996b18467f99b0219be9910dc09323f8612d7413f4aad141ef18f8ab2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "749c277996b18467f99b0219be9910dc09323f8612d7413f4aad141ef18f8ab2", kill_on_drop: false }`
[INFO] [stdout] 749c277996b18467f99b0219be9910dc09323f8612d7413f4aad141ef18f8ab2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 2f457ad030b373369f6758b077a8d393562fe2347bb54146e7134859e1c29e4d
[INFO] running `Command { std: "docker" "start" "-a" "2f457ad030b373369f6758b077a8d393562fe2347bb54146e7134859e1c29e4d", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.85
[INFO] [stderr]    Compiling pest v2.1.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.25
[INFO] [stderr]     Checking yaml-rust v0.4.2
[INFO] [stderr]     Checking backtrace-sys v0.1.28
[INFO] [stderr]     Checking ordered-float v1.0.1
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking backtrace v0.3.13
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling pest_meta v2.1.0
[INFO] [stderr]     Checking indexmap v1.0.2
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking serde_yaml v0.8.8
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling pest_generator v2.1.0
[INFO] [stderr]     Checking serde_json v1.0.36
[INFO] [stderr]     Checking serde-value v0.5.3 (https://github.com/mitsuhiko/serde-value?rev=3767089d736480264c7e4fc7a9ca6a1aea65a0e4#3767089d)
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling structopt-derive v0.2.14
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking structopt v0.2.14
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking qq v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.39s
[INFO] running `Command { std: "docker" "inspect" "2f457ad030b373369f6758b077a8d393562fe2347bb54146e7134859e1c29e4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f457ad030b373369f6758b077a8d393562fe2347bb54146e7134859e1c29e4d", kill_on_drop: false }`
[INFO] [stdout] 2f457ad030b373369f6758b077a8d393562fe2347bb54146e7134859e1c29e4d