[INFO] fetching crate iref 1.1.5...
[INFO] checking iref-1.1.5 against try#05c8870159e4f328578a970e125aa76d24f03b56 for pr-76219
[INFO] extracting crate iref 1.1.5 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate iref 1.1.5 on toolchain 05c8870159e4f328578a970e125aa76d24f03b56
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate iref 1.1.5
[INFO] finished tweaking crates.io crate iref 1.1.5
[INFO] tweaked toml for crates.io crate iref 1.1.5 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate iref 1.1.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+05c8870159e4f328578a970e125aa76d24f03b56" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 313d9408b4132a4b365f5167e4cd167d0829cd49df9452406a7d95cd71c3513d
[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" "313d9408b4132a4b365f5167e4cd167d0829cd49df9452406a7d95cd71c3513d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "313d9408b4132a4b365f5167e4cd167d0829cd49df9452406a7d95cd71c3513d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "313d9408b4132a4b365f5167e4cd167d0829cd49df9452406a7d95cd71c3513d", kill_on_drop: false }`
[INFO] [stdout] 313d9408b4132a4b365f5167e4cd167d0829cd49df9452406a7d95cd71c3513d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+05c8870159e4f328578a970e125aa76d24f03b56" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a6a2d945c61292533c418ddbbe0ed42b60bb0b17f28e7fbbd36235170027b972
[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" "a6a2d945c61292533c418ddbbe0ed42b60bb0b17f28e7fbbd36235170027b972", kill_on_drop: false }`
[INFO] [stderr]     Checking smallvec v1.2.0
[INFO] [stderr]     Checking pct-str v1.0.2
[INFO] [stderr]     Checking iref v1.1.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.04s
[INFO] running `Command { std: "docker" "inspect" "a6a2d945c61292533c418ddbbe0ed42b60bb0b17f28e7fbbd36235170027b972", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6a2d945c61292533c418ddbbe0ed42b60bb0b17f28e7fbbd36235170027b972", kill_on_drop: false }`
[INFO] [stdout] a6a2d945c61292533c418ddbbe0ed42b60bb0b17f28e7fbbd36235170027b972