[INFO] fetching crate slog_mongodb 1.0.0...
[INFO] checking slog_mongodb-1.0.0 against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] extracting crate slog_mongodb 1.0.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate slog_mongodb 1.0.0 on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate slog_mongodb 1.0.0
[INFO] finished tweaking crates.io crate slog_mongodb 1.0.0
[INFO] tweaked toml for crates.io crate slog_mongodb 1.0.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "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] b08b3b4cd3aac4205ef759e0f09115ee9f6482da0d80403502eeaf93a8b1d7a0
[INFO] running `Command { std: "docker" "start" "-a" "b08b3b4cd3aac4205ef759e0f09115ee9f6482da0d80403502eeaf93a8b1d7a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b08b3b4cd3aac4205ef759e0f09115ee9f6482da0d80403502eeaf93a8b1d7a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b08b3b4cd3aac4205ef759e0f09115ee9f6482da0d80403502eeaf93a8b1d7a0", kill_on_drop: false }`
[INFO] [stdout] b08b3b4cd3aac4205ef759e0f09115ee9f6482da0d80403502eeaf93a8b1d7a0
[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" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "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] 3ceab5c0eb592363e4bcc81faf47e980ec545de121b7babf09861a930896971a
[INFO] running `Command { std: "docker" "start" "-a" "3ceab5c0eb592363e4bcc81faf47e980ec545de121b7babf09861a930896971a", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]     Checking futures-sink v0.3.8
[INFO] [stderr]    Compiling unicode-xid v0.1.0
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[INFO] [stderr]    Compiling rustversion v1.0.4
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]     Checking gimli v0.23.0
[INFO] [stderr]     Checking percent-encoding v2.1.0
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[INFO] [stderr]     Checking hashbrown v0.9.1
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[INFO] [stderr]    Compiling serde_json v1.0.60
[INFO] [stderr]     Checking object v0.22.0
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking rustc-demangle v0.1.18
[INFO] [stderr]    Compiling os_info v1.3.3
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking md5 v0.6.1
[INFO] [stderr]     Checking bufstream v0.1.4
[INFO] [stderr]     Checking base64 v0.11.0
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling ring v0.16.19
[INFO] [stderr]     Checking futures-channel v0.3.8
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[INFO] [stderr]     Checking lru-cache v0.1.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking stringprep v0.1.2
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]     Checking resolv-conf v0.7.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking url v2.2.0
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking tokio v0.2.24
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling err-derive v0.2.4
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking slog-async v2.5.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]     Checking hmac v0.7.1
[INFO] [stderr]     Checking md-5 v0.8.0
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking addr2line v0.14.0
[INFO] [stderr]     Checking pbkdf2 v0.3.0
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[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking backtrace v0.3.55
[INFO] [stderr]     Checking webpki-roots v0.18.0
[INFO] [stderr]     Checking rustls v0.16.0
[INFO] [stderr]    Compiling darling_core v0.10.3
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]    Compiling async-trait v0.1.42
[INFO] [stderr]    Compiling enum-as-inner v0.3.3
[INFO] [stderr]    Compiling derivative v1.0.4
[INFO] [stderr]    Compiling typed-builder v0.3.0
[INFO] [stderr]    Compiling darling_macro v0.10.3
[INFO] [stderr]     Checking thiserror v1.0.22
[INFO] [stderr]     Checking pin-project v1.0.2
[INFO] [stderr]     Checking futures-util v0.3.8
[INFO] [stderr]    Compiling darling v0.10.3
[INFO] [stderr]    Compiling serde_with_macros v1.3.0
[INFO] [stderr]     Checking futures v0.3.8
[INFO] [stderr]     Checking trust-dns-proto v0.19.6
[INFO] [stderr]     Checking trust-dns-resolver v0.19.6
[INFO] [stderr]     Checking serde_with v1.6.0
[INFO] [stderr]     Checking bson v0.14.1
[INFO] [stderr]     Checking mongodb v0.9.2
[INFO] [stderr]     Checking slog_mongodb v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 16s
[INFO] running `Command { std: "docker" "inspect" "3ceab5c0eb592363e4bcc81faf47e980ec545de121b7babf09861a930896971a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ceab5c0eb592363e4bcc81faf47e980ec545de121b7babf09861a930896971a", kill_on_drop: false }`
[INFO] [stdout] 3ceab5c0eb592363e4bcc81faf47e980ec545de121b7babf09861a930896971a