[INFO] cloning repository https://github.com/cburgdorf/rusty-rlp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cburgdorf/rusty-rlp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcburgdorf%2Frusty-rlp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcburgdorf%2Frusty-rlp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9a511c6ce0d8472ebdb71ee4c616faec435de007
[INFO] checking cburgdorf/rusty-rlp against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcburgdorf%2Frusty-rlp" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cburgdorf/rusty-rlp on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cburgdorf/rusty-rlp
[INFO] finished tweaking git repo https://github.com/cburgdorf/rusty-rlp
[INFO] tweaked toml for git repo https://github.com/cburgdorf/rusty-rlp written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/cburgdorf/rusty-rlp already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pyo3cls v0.11.1
[INFO] [stderr]   Downloaded paste-impl v0.1.18
[INFO] [stderr]   Downloaded rlp v0.4.5
[INFO] [stderr]   Downloaded paste v0.1.18
[INFO] [stderr]   Downloaded pyo3-derive-backend v0.11.1
[INFO] [stderr]   Downloaded unindent v0.1.11
[INFO] [stderr]   Downloaded ethbloom v0.9.2
[INFO] [stderr]   Downloaded primitive-types v0.7.2
[INFO] [stderr]   Downloaded byte-slice-cast v0.3.5
[INFO] [stderr]   Downloaded impl-codec v0.4.2
[INFO] [stderr]   Downloaded impl-rlp v0.2.1
[INFO] [stderr]   Downloaded ethereum-types v0.9.2
[INFO] [stderr]   Downloaded inventory-impl v0.1.11
[INFO] [stderr]   Downloaded hex-literal v0.3.0
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.8
[INFO] [stderr]   Downloaded either v1.6.0
[INFO] [stderr]   Downloaded getrandom v0.1.14
[INFO] [stderr]   Downloaded serde v1.0.115
[INFO] [stderr]   Downloaded impl-serde v0.3.1
[INFO] [stderr]   Downloaded pyo3 v0.11.1
[INFO] [stderr]   Downloaded libc v0.2.73
[INFO] [stderr]   Downloaded arrayvec v0.5.1
[INFO] [stderr]   Downloaded rstest v0.6.4
[INFO] [stderr]   Downloaded parity-scale-codec v1.3.4
[INFO] [stderr]   Downloaded ghost v0.1.17
[INFO] [stderr]   Downloaded parking_lot_core v0.8.0
[INFO] [stderr]   Downloaded parking_lot v0.11.0
[INFO] [stderr]   Downloaded hex v0.4.2
[INFO] [stderr]   Downloaded indoc v0.3.6
[INFO] [stderr]   Downloaded indoc-impl v0.3.6
[INFO] [stderr]   Downloaded inventory v0.1.11
[INFO] [stderr]   Downloaded cloudabi v0.1.0
[INFO] [stderr]   Downloaded instant v0.1.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f6ef0ee8536cae36e0c7f3d1eda0dd292fe53215cf4f8161ab9345401e193e5
[INFO] running `Command { std: "docker" "start" "-a" "8f6ef0ee8536cae36e0c7f3d1eda0dd292fe53215cf4f8161ab9345401e193e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f6ef0ee8536cae36e0c7f3d1eda0dd292fe53215cf4f8161ab9345401e193e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f6ef0ee8536cae36e0c7f3d1eda0dd292fe53215cf4f8161ab9345401e193e5", kill_on_drop: false }`
[INFO] [stdout] 8f6ef0ee8536cae36e0c7f3d1eda0dd292fe53215cf4f8161ab9345401e193e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b4fbcfa717f84a4ec179395f33b60e8f5624eed70d693332b3b26dde42f1de4
[INFO] running `Command { std: "docker" "start" "-a" "8b4fbcfa717f84a4ec179395f33b60e8f5624eed70d693332b3b26dde42f1de4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]     Checking rustc-hex v2.1.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.20+deprecated
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]     Checking either v1.6.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking radium v0.3.0
[INFO] [stderr]     Checking byte-slice-cast v0.3.5
[INFO] [stderr]     Checking instant v0.1.6
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling inventory v0.1.11
[INFO] [stderr]     Checking rlp v0.4.5
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking bitvec v0.17.4
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling unindent v0.1.11
[INFO] [stderr]     Checking impl-rlp v0.2.1
[INFO] [stderr]    Compiling pyo3 v0.11.1
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]    Compiling hex-literal v0.3.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking hex v0.4.2
[INFO] [stderr]    Compiling rstest v0.6.4
[INFO] [stderr]     Checking uint v0.8.5
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking paste v0.1.18
[INFO] [stderr]     Checking fixed-hash v0.6.1
[INFO] [stderr]    Compiling ghost v0.1.17
[INFO] [stderr]     Checking impl-serde v0.3.1
[INFO] [stderr]     Checking parity-scale-codec v1.3.4
[INFO] [stderr]     Checking ethbloom v0.9.2
[INFO] [stderr]    Compiling pyo3-derive-backend v0.11.1
[INFO] [stderr]    Compiling ctor v0.1.26
[INFO] [stderr]    Compiling inventory-impl v0.1.11
[INFO] [stderr]    Compiling indoc-impl v0.3.6
[INFO] [stderr]    Compiling pyo3cls v0.11.1
[INFO] [stderr]     Checking indoc v0.3.6
[INFO] [stderr]     Checking impl-codec v0.4.2
[INFO] [stderr]     Checking primitive-types v0.7.2
[INFO] [stderr]     Checking ethereum-types v0.9.2
[INFO] [stderr]     Checking rusty-rlp v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.68s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: pyo3 v0.11.1, pyo3-derive-backend v0.11.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "8b4fbcfa717f84a4ec179395f33b60e8f5624eed70d693332b3b26dde42f1de4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b4fbcfa717f84a4ec179395f33b60e8f5624eed70d693332b3b26dde42f1de4", kill_on_drop: false }`
[INFO] [stdout] 8b4fbcfa717f84a4ec179395f33b60e8f5624eed70d693332b3b26dde42f1de4