[INFO] fetching crate google-classroom1 2.0.4+20210323...
[INFO] checking google-classroom1-2.0.4+20210323 against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] extracting crate google-classroom1 2.0.4+20210323 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate google-classroom1 2.0.4+20210323 on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate google-classroom1 2.0.4+20210323
[INFO] finished tweaking crates.io crate google-classroom1 2.0.4+20210323
[INFO] tweaked toml for crates.io crate google-classroom1 2.0.4+20210323 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2056958d2e8f758ef62ddd98c3f1a6310e058f0137a870c34620d00a497307af
[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" "2056958d2e8f758ef62ddd98c3f1a6310e058f0137a870c34620d00a497307af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2056958d2e8f758ef62ddd98c3f1a6310e058f0137a870c34620d00a497307af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2056958d2e8f758ef62ddd98c3f1a6310e058f0137a870c34620d00a497307af", kill_on_drop: false }`
[INFO] [stdout] 2056958d2e8f758ef62ddd98c3f1a6310e058f0137a870c34620d00a497307af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "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] 9e828b62db2b01dba7f5ea166fc61393e6a306968c74c7f3e506e2ddf0fcd694
[INFO] running `Command { std: "docker" "start" "-a" "9e828b62db2b01dba7f5ea166fc61393e6a306968c74c7f3e506e2ddf0fcd694", kill_on_drop: false }`
[INFO] [stderr]    Compiling tokio v1.5.0
[INFO] [stderr]     Checking tracing-core v0.1.18
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]     Checking ring v0.16.20
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]     Checking url v2.2.1
[INFO] [stderr]     Checking sct v0.6.1
[INFO] [stderr]     Checking webpki v0.21.4
[INFO] [stderr]     Checking ct-logs v0.8.0
[INFO] [stderr]     Checking rustls v0.19.1
[INFO] [stderr]     Checking rustls-native-certs v0.5.0
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]    Compiling futures-macro v0.3.14
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling pin-project-internal v1.0.7
[INFO] [stderr]     Checking futures-util v0.3.14
[INFO] [stderr]     Checking pin-project v1.0.7
[INFO] [stderr]     Checking tokio-util v0.6.6
[INFO] [stderr]     Checking tokio-rustls v0.22.0
[INFO] [stderr]     Checking futures-executor v0.3.14
[INFO] [stderr]     Checking futures v0.3.14
[INFO] [stderr]     Checking h2 v0.3.3
[INFO] [stderr]     Checking serde v1.0.125
[INFO] [stderr]     Checking hyper v0.14.7
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking hyper-rustls v0.22.1
[INFO] [stderr]     Checking yup-oauth2 v5.1.0
[INFO] [stderr]     Checking google-classroom1 v2.0.4+20210323 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 19s
[INFO] running `Command { std: "docker" "inspect" "9e828b62db2b01dba7f5ea166fc61393e6a306968c74c7f3e506e2ddf0fcd694", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e828b62db2b01dba7f5ea166fc61393e6a306968c74c7f3e506e2ddf0fcd694", kill_on_drop: false }`
[INFO] [stdout] 9e828b62db2b01dba7f5ea166fc61393e6a306968c74c7f3e506e2ddf0fcd694