[INFO] fetching crate error-iter 0.2.0...
[INFO] checking error-iter-0.2.0 against master#7f5a42b073dc2bee2aa625052eb066ee07072048 for pr-78991
[INFO] extracting crate error-iter 0.2.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate error-iter 0.2.0 on toolchain 7f5a42b073dc2bee2aa625052eb066ee07072048
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate error-iter 0.2.0
[INFO] finished tweaking crates.io crate error-iter 0.2.0
[INFO] tweaked toml for crates.io crate error-iter 0.2.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate error-iter 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 97b91298ac6ccb13a80c1e7c0213174e464c954cbe79836d4a626e9448e4a929
[INFO] running `Command { std: "docker" "start" "-a" "97b91298ac6ccb13a80c1e7c0213174e464c954cbe79836d4a626e9448e4a929", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97b91298ac6ccb13a80c1e7c0213174e464c954cbe79836d4a626e9448e4a929", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97b91298ac6ccb13a80c1e7c0213174e464c954cbe79836d4a626e9448e4a929", kill_on_drop: false }`
[INFO] [stdout] 97b91298ac6ccb13a80c1e7c0213174e464c954cbe79836d4a626e9448e4a929
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] faba1e0e39c0890572716498d31d2562941cc1e7bafa5d9e990a8acdfb9891fa
[INFO] running `Command { std: "docker" "start" "-a" "faba1e0e39c0890572716498d31d2562941cc1e7bafa5d9e990a8acdfb9891fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.7
[INFO] [stderr]     Checking error-iter v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.4
[INFO] [stderr]     Checking thiserror v1.0.4
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.56s
[INFO] running `Command { std: "docker" "inspect" "faba1e0e39c0890572716498d31d2562941cc1e7bafa5d9e990a8acdfb9891fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "faba1e0e39c0890572716498d31d2562941cc1e7bafa5d9e990a8acdfb9891fa", kill_on_drop: false }`
[INFO] [stdout] faba1e0e39c0890572716498d31d2562941cc1e7bafa5d9e990a8acdfb9891fa