[INFO] fetching crate imap 2.4.0...
[INFO] checking imap-2.4.0 against try#81275a1445c7502a974118e0c69b795ab60be991 for pr-80243
[INFO] extracting crate imap 2.4.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate imap 2.4.0 on toolchain 81275a1445c7502a974118e0c69b795ab60be991
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate imap 2.4.0
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate imap 2.4.0
[INFO] tweaked toml for crates.io crate imap 2.4.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate imap 2.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustls v0.19.0
[INFO] [stderr]   Downloaded lettre v0.9.5
[INFO] [stderr]   Downloaded rustls-connector v0.13.1
[INFO] [stderr]   Downloaded rustls-native-certs v0.5.0
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 979d0026cb17cb9b58031d532f595e0278a4d9da3ab2570fc40818ec517a316d
[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" "979d0026cb17cb9b58031d532f595e0278a4d9da3ab2570fc40818ec517a316d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "979d0026cb17cb9b58031d532f595e0278a4d9da3ab2570fc40818ec517a316d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "979d0026cb17cb9b58031d532f595e0278a4d9da3ab2570fc40818ec517a316d", kill_on_drop: false }`
[INFO] [stdout] 979d0026cb17cb9b58031d532f595e0278a4d9da3ab2570fc40818ec517a316d
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "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] 7faec4c6ec3884616684f65959b333c1bcf22265b90998444b8ace155977c369
[INFO] running `Command { std: "docker" "start" "-a" "7faec4c6ec3884616684f65959b333c1bcf22265b90998444b8ace155977c369", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]    Compiling lexical-core v0.7.4
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking ascii_utils v0.9.3
[INFO] [stderr]     Checking bufstream v0.1.4
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]    Compiling ring v0.16.19
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]    Compiling email v0.0.20
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking fast_chemail v0.9.6
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]    Compiling openssl v0.10.31
[INFO] [stderr]    Compiling native-tls v0.2.6
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]     Checking rand_pcg v0.1.2
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking serde_json v1.0.60
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking nom v4.2.3
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking webpki v0.21.4
[INFO] [stderr]     Checking rustls v0.19.0
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking imap-proto v0.10.2
[INFO] [stderr]     Checking rustls-native-certs v0.5.0
[INFO] [stderr]     Checking rustls-connector v0.13.1
[INFO] [stderr]     Checking imap v2.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]     Checking lettre v0.9.5
[INFO] [stderr]     Checking lettre_email v0.9.4
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 54.33s
[INFO] running `Command { std: "docker" "inspect" "7faec4c6ec3884616684f65959b333c1bcf22265b90998444b8ace155977c369", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7faec4c6ec3884616684f65959b333c1bcf22265b90998444b8ace155977c369", kill_on_drop: false }`
[INFO] [stdout] 7faec4c6ec3884616684f65959b333c1bcf22265b90998444b8ace155977c369