[INFO] fetching crate nu_plugin_tree 0.20.0...
[INFO] checking nu_plugin_tree-0.20.0 against master#0d37dca25a51fb900a402c94c8818ad1c2789e30 for pr-77526
[INFO] extracting crate nu_plugin_tree 0.20.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate nu_plugin_tree 0.20.0 on toolchain 0d37dca25a51fb900a402c94c8818ad1c2789e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nu_plugin_tree 0.20.0
[INFO] finished tweaking crates.io crate nu_plugin_tree 0.20.0
[INFO] tweaked toml for crates.io crate nu_plugin_tree 0.20.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate nu_plugin_tree 0.20.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ptree v0.3.0
[INFO] [stderr]   Downloaded nu-protocol v0.20.0
[INFO] [stderr]   Downloaded nu-value-ext v0.20.0
[INFO] [stderr]   Downloaded pretty v0.5.2
[INFO] [stderr]   Downloaded nu-plugin v0.20.0
[INFO] [stderr]   Downloaded natural v0.5.0
[INFO] [stderr]   Downloaded nu-errors v0.20.0
[INFO] [stderr]   Downloaded nu-source v0.20.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e8ce8a316d2acfcaf3e42b694834cab4eb54fac07c6035577f24dff682f73b5
[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" "4e8ce8a316d2acfcaf3e42b694834cab4eb54fac07c6035577f24dff682f73b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e8ce8a316d2acfcaf3e42b694834cab4eb54fac07c6035577f24dff682f73b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e8ce8a316d2acfcaf3e42b694834cab4eb54fac07c6035577f24dff682f73b5", kill_on_drop: false }`
[INFO] [stdout] 4e8ce8a316d2acfcaf3e42b694834cab4eb54fac07c6035577f24dff682f73b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3fe2eaa57f5f9edf15929c50f42cfbc9b25820bc7c1ee4977279543b670c43b1
[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" "3fe2eaa57f5f9edf15929c50f42cfbc9b25820bc7c1ee4977279543b670c43b1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking typed-arena v1.7.0
[INFO] [stderr]     Checking hashbrown v0.9.0
[INFO] [stderr]    Compiling lexical-core v0.7.4
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking utf8-width v0.1.4
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.3.0
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking tint v1.0.1
[INFO] [stderr]     Checking byte-unit v4.0.9
[INFO] [stderr]     Checking pretty v0.5.2
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking directories v2.0.2
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking ordered-float v1.1.0
[INFO] [stderr]     Checking serde-hjson v0.9.1
[INFO] [stderr]    Compiling getset v0.1.1
[INFO] [stderr]    Compiling derive-new v0.5.8
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking codespan-reporting v0.9.5
[INFO] [stderr]     Checking nu-source v0.20.0
[INFO] [stderr]     Checking serde_yaml v0.8.13
[INFO] [stderr]     Checking rust-stemmers v1.2.0
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]     Checking serde-value v0.6.0
[INFO] [stderr]     Checking petgraph v0.5.1
[INFO] [stderr]     Checking config v0.10.1
[INFO] [stderr]     Checking bigdecimal v0.2.0
[INFO] [stderr]     Checking nu-errors v0.20.0
[INFO] [stderr]     Checking natural v0.5.0
[INFO] [stderr]     Checking ptree v0.3.0
[INFO] [stderr]     Checking nu-protocol v0.20.0
[INFO] [stderr]     Checking nu-value-ext v0.20.0
[INFO] [stderr]     Checking nu-plugin v0.20.0
[INFO] [stderr]     Checking nu_plugin_tree v0.20.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 25s
[INFO] running `Command { std: "docker" "inspect" "3fe2eaa57f5f9edf15929c50f42cfbc9b25820bc7c1ee4977279543b670c43b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fe2eaa57f5f9edf15929c50f42cfbc9b25820bc7c1ee4977279543b670c43b1", kill_on_drop: false }`
[INFO] [stdout] 3fe2eaa57f5f9edf15929c50f42cfbc9b25820bc7c1ee4977279543b670c43b1