[INFO] fetching crate err-context 0.1.0...
[INFO] checking err-context-0.1.0 against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] extracting crate err-context 0.1.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate err-context 0.1.0 on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate err-context 0.1.0
[INFO] finished tweaking crates.io crate err-context 0.1.0
[INFO] tweaked toml for crates.io crate err-context 0.1.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dff78b55bf000b4b0efdafd2020d2823b7a79161273b6d201af7331e9cf50059
[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" "dff78b55bf000b4b0efdafd2020d2823b7a79161273b6d201af7331e9cf50059", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dff78b55bf000b4b0efdafd2020d2823b7a79161273b6d201af7331e9cf50059", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dff78b55bf000b4b0efdafd2020d2823b7a79161273b6d201af7331e9cf50059", kill_on_drop: false }`
[INFO] [stdout] dff78b55bf000b4b0efdafd2020d2823b7a79161273b6d201af7331e9cf50059
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fefdf36c4b3decdb92cb16c20fd39e5c85dc5b0dbf3c3eb2eedcfaabdb7b2db7
[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" "fefdf36c4b3decdb92cb16c20fd39e5c85dc5b0dbf3c3eb2eedcfaabdb7b2db7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]    Compiling pulldown-cmark v0.4.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking semver-parser v0.9.0
[INFO] [stderr]     Checking err-context v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking tinyvec v1.1.0
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking unicode-normalization v0.1.16
[INFO] [stderr]     Checking syn v0.15.44
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking version-sync v0.8.1
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.95s
[INFO] running `Command { std: "docker" "inspect" "fefdf36c4b3decdb92cb16c20fd39e5c85dc5b0dbf3c3eb2eedcfaabdb7b2db7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fefdf36c4b3decdb92cb16c20fd39e5c85dc5b0dbf3c3eb2eedcfaabdb7b2db7", kill_on_drop: false }`
[INFO] [stdout] fefdf36c4b3decdb92cb16c20fd39e5c85dc5b0dbf3c3eb2eedcfaabdb7b2db7