[INFO] cloning repository https://github.com/crmckenzie/rust-error-libraries
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/crmckenzie/rust-error-libraries" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrmckenzie%2Frust-error-libraries", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrmckenzie%2Frust-error-libraries'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 103b99038c65b9c2896b50bed24242e8975e155b
[INFO] checking crmckenzie/rust-error-libraries against try#894d32a5432c6a6461bb2aac7c3d5f2e87dce83f for pr-77015
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrmckenzie%2Frust-error-libraries" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/crmckenzie/rust-error-libraries on toolchain 894d32a5432c6a6461bb2aac7c3d5f2e87dce83f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/crmckenzie/rust-error-libraries
[INFO] finished tweaking git repo https://github.com/crmckenzie/rust-error-libraries
[INFO] tweaked toml for git repo https://github.com/crmckenzie/rust-error-libraries written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/crmckenzie/rust-error-libraries already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thiserror v1.0.8
[INFO] [stderr]   Downloaded err-derive v0.2.1
[INFO] [stderr]   Downloaded snafu-derive v0.6.0
[INFO] [stderr]   Downloaded thiserror-impl v1.0.8
[INFO] [stderr]   Downloaded snafu v0.6.0
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3c5c1e34c365fca25c4fd7ad0484d4fc8d93d6ec90bc01275f40d5946da441bd
[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" "3c5c1e34c365fca25c4fd7ad0484d4fc8d93d6ec90bc01275f40d5946da441bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c5c1e34c365fca25c4fd7ad0484d4fc8d93d6ec90bc01275f40d5946da441bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c5c1e34c365fca25c4fd7ad0484d4fc8d93d6ec90bc01275f40d5946da441bd", kill_on_drop: false }`
[INFO] [stdout] 3c5c1e34c365fca25c4fd7ad0484d4fc8d93d6ec90bc01275f40d5946da441bd
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eec8daeab3b46d7bdd4294e01e3baaf59423394fbab12c8ae3570b2e513249fa
[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" "eec8daeab3b46d7bdd4294e01e3baaf59423394fbab12c8ae3570b2e513249fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling cc v1.0.47
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling doc-comment v0.3.1
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking objekt v0.1.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling err-derive v0.2.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.8
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling snafu-derive v0.6.0
[INFO] [stderr]    Compiling derive_more v0.99.2
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking thiserror v1.0.8
[INFO] [stderr]     Checking snafu v0.6.0
[INFO] [stderr]     Checking errors v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 00s
[INFO] running `Command { std: "docker" "inspect" "eec8daeab3b46d7bdd4294e01e3baaf59423394fbab12c8ae3570b2e513249fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eec8daeab3b46d7bdd4294e01e3baaf59423394fbab12c8ae3570b2e513249fa", kill_on_drop: false }`
[INFO] [stdout] eec8daeab3b46d7bdd4294e01e3baaf59423394fbab12c8ae3570b2e513249fa