[INFO] fetching crate nu-protocol 0.23.0...
[INFO] checking nu-protocol-0.23.0 against master#39b841dfe36f90a7cd111e7f0c55f32594f6e578 for pr-77035
[INFO] extracting crate nu-protocol 0.23.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate nu-protocol 0.23.0 on toolchain 39b841dfe36f90a7cd111e7f0c55f32594f6e578
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nu-protocol 0.23.0
[INFO] finished tweaking crates.io crate nu-protocol 0.23.0
[INFO] tweaked toml for crates.io crate nu-protocol 0.23.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 91ce6042002cc345f83fff6117a18de58cf8ed67ec0a42b2c0358c062d42f033
[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" "91ce6042002cc345f83fff6117a18de58cf8ed67ec0a42b2c0358c062d42f033", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91ce6042002cc345f83fff6117a18de58cf8ed67ec0a42b2c0358c062d42f033", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91ce6042002cc345f83fff6117a18de58cf8ed67ec0a42b2c0358c062d42f033", kill_on_drop: false }`
[INFO] [stdout] 91ce6042002cc345f83fff6117a18de58cf8ed67ec0a42b2c0358c062d42f033
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 191d022a1c77cd2e638c3a4e5e9c207d39f26ea82e9fafc4d533dde2fb52337d
[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" "191d022a1c77cd2e638c3a4e5e9c207d39f26ea82e9fafc4d533dde2fb52337d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling serde_json v1.0.60
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling derive-new v0.5.8
[INFO] [stderr]    Compiling getset v0.1.1
[INFO] [stderr]     Checking num-bigint v0.3.1
[INFO] [stderr]     Checking codespan-reporting v0.9.5
[INFO] [stderr]     Checking nu-source v0.23.0
[INFO] [stderr]     Checking serde_yaml v0.8.14
[INFO] [stderr]     Checking toml v0.5.7
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking indexmap v1.6.0
[INFO] [stderr]     Checking bigdecimal v0.2.0
[INFO] [stderr]     Checking nu-errors v0.23.0
[INFO] [stderr]     Checking nu-protocol v0.23.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 54.57s
[INFO] running `Command { std: "docker" "inspect" "191d022a1c77cd2e638c3a4e5e9c207d39f26ea82e9fafc4d533dde2fb52337d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "191d022a1c77cd2e638c3a4e5e9c207d39f26ea82e9fafc4d533dde2fb52337d", kill_on_drop: false }`
[INFO] [stdout] 191d022a1c77cd2e638c3a4e5e9c207d39f26ea82e9fafc4d533dde2fb52337d