[INFO] cloning repository https://github.com/asymmetric/rusty-chain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/asymmetric/rusty-chain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasymmetric%2Frusty-chain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasymmetric%2Frusty-chain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ffb29dddedc1186fadd07f87ec3e8ae619c0d858
[INFO] checking asymmetric/rusty-chain against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasymmetric%2Frusty-chain" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/asymmetric/rusty-chain on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/asymmetric/rusty-chain
[INFO] finished tweaking git repo https://github.com/asymmetric/rusty-chain
[INFO] tweaked toml for git repo https://github.com/asymmetric/rusty-chain written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/asymmetric/rusty-chain already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 70e7f4cfb59c5f3ba52c7f42e4a7ede8660e4ac18c398ad6ae91e172cae3303e
[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" "70e7f4cfb59c5f3ba52c7f42e4a7ede8660e4ac18c398ad6ae91e172cae3303e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "70e7f4cfb59c5f3ba52c7f42e4a7ede8660e4ac18c398ad6ae91e172cae3303e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70e7f4cfb59c5f3ba52c7f42e4a7ede8660e4ac18c398ad6ae91e172cae3303e", kill_on_drop: false }`
[INFO] [stdout] 70e7f4cfb59c5f3ba52c7f42e4a7ede8660e4ac18c398ad6ae91e172cae3303e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ebfdd07d4aa8afa0f974e651bb4d8b5fd9ef7f75940e83bde9c1b3f186732452
[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" "ebfdd07d4aa8afa0f974e651bb4d8b5fd9ef7f75940e83bde9c1b3f186732452", kill_on_drop: false }`
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking hex v0.2.0
[INFO] [stderr]     Checking rand v0.3.18
[INFO] [stderr]     Checking chrono v0.4.0
[INFO] [stderr]     Checking clap v2.29.4
[INFO] [stderr]     Checking num-bigint v0.1.41
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking rusty-chain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error/mod.rs:27:32
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error/mod.rs:27:32
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.90s
[INFO] running `Command { std: "docker" "inspect" "ebfdd07d4aa8afa0f974e651bb4d8b5fd9ef7f75940e83bde9c1b3f186732452", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebfdd07d4aa8afa0f974e651bb4d8b5fd9ef7f75940e83bde9c1b3f186732452", kill_on_drop: false }`
[INFO] [stdout] ebfdd07d4aa8afa0f974e651bb4d8b5fd9ef7f75940e83bde9c1b3f186732452