[INFO] fetching crate rust-visitor 0.2.1...
[INFO] checking rust-visitor-0.2.1 against try#15a786332e2f0dd343b226ab6bb8ec028a350f73 for pr-81782
[INFO] extracting crate rust-visitor 0.2.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate rust-visitor 0.2.1 on toolchain 15a786332e2f0dd343b226ab6bb8ec028a350f73
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rust-visitor 0.2.1
[INFO] finished tweaking crates.io crate rust-visitor 0.2.1
[INFO] tweaked toml for crates.io crate rust-visitor 0.2.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "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 drop_bomb v0.1.5
[INFO] [stderr]   Downloaded rustc-ap-rustc_lexer v673.0.0
[INFO] [stderr]   Downloaded ra_ap_stdx v0.0.16
[INFO] [stderr]   Downloaded ra_ap_parser v0.0.16
[INFO] [stderr]   Downloaded text-size v1.1.0
[INFO] [stderr]   Downloaded triomphe v0.1.2
[INFO] [stderr]   Downloaded ra_ap_text_edit v0.0.16
[INFO] [stderr]   Downloaded ra_ap_syntax v0.0.16
[INFO] [stderr]   Downloaded rowan v0.10.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04668e54f510b789434950f35ff14222643194ebda64d1ec6b14af1610f4e49c
[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" "04668e54f510b789434950f35ff14222643194ebda64d1ec6b14af1610f4e49c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04668e54f510b789434950f35ff14222643194ebda64d1ec6b14af1610f4e49c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04668e54f510b789434950f35ff14222643194ebda64d1ec6b14af1610f4e49c", kill_on_drop: false }`
[INFO] [stdout] 04668e54f510b789434950f35ff14222643194ebda64d1ec6b14af1610f4e49c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dcc5d2cb26b474ac67a8064609bd6da4d92b53b873e9b87925963bbd83cba67e
[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" "dcc5d2cb26b474ac67a8064609bd6da4d92b53b873e9b87925963bbd83cba67e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking text-size v1.1.0
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking drop_bomb v0.1.5
[INFO] [stderr]     Checking ra_ap_stdx v0.0.16
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]    Compiling paste v1.0.4
[INFO] [stderr]     Checking ra_ap_parser v0.0.16
[INFO] [stderr]     Checking rustc-ap-rustc_lexer v673.0.0
[INFO] [stderr]     Checking ra_ap_text_edit v0.0.16
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]     Checking serde v1.0.123
[INFO] [stderr]     Checking triomphe v0.1.2
[INFO] [stderr]     Checking smol_str v0.1.17
[INFO] [stderr]     Checking rowan v0.10.6
[INFO] [stderr]     Checking ra_ap_syntax v0.0.16
[INFO] [stderr]     Checking rust-visitor v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.75s
[INFO] running `Command { std: "docker" "inspect" "dcc5d2cb26b474ac67a8064609bd6da4d92b53b873e9b87925963bbd83cba67e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcc5d2cb26b474ac67a8064609bd6da4d92b53b873e9b87925963bbd83cba67e", kill_on_drop: false }`
[INFO] [stdout] dcc5d2cb26b474ac67a8064609bd6da4d92b53b873e9b87925963bbd83cba67e