[INFO] cloning repository https://github.com/lpgo/mongodb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lpgo/mongodb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flpgo%2Fmongodb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flpgo%2Fmongodb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e1cb0272e57c4e2f0be583215ce9ec0bcf86c8ff
[INFO] checking lpgo/mongodb against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flpgo%2Fmongodb" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lpgo/mongodb on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lpgo/mongodb
[INFO] finished tweaking git repo https://github.com/lpgo/mongodb
[INFO] tweaked toml for git repo https://github.com/lpgo/mongodb written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/lpgo/mongodb already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: the lock file /workspace/builds/worker-12/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6951d773c1d9b7a3393aa733d592af069bad981f972cd2775f886cd4aaca540f
[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" "6951d773c1d9b7a3393aa733d592af069bad981f972cd2775f886cd4aaca540f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6951d773c1d9b7a3393aa733d592af069bad981f972cd2775f886cd4aaca540f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6951d773c1d9b7a3393aa733d592af069bad981f972cd2775f886cd4aaca540f", kill_on_drop: false }`
[INFO] [stdout] 6951d773c1d9b7a3393aa733d592af069bad981f972cd2775f886cd4aaca540f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 719ad3c5e5ca7059d310a3d880e39d89a8cb982ac2ece9c55d14924dba75a248
[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" "719ad3c5e5ca7059d310a3d880e39d89a8cb982ac2ece9c55d14924dba75a248", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]     Checking serde v0.7.15
[INFO] [stderr]     Checking byteorder v0.3.13
[INFO] [stderr]     Checking libc v0.1.12
[INFO] [stderr]     Checking bufstream v0.1.4
[INFO] [stderr]     Checking separator v0.3.1
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling num-bigint v0.3.0
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking num-complex v0.3.0
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking textnonce v0.1.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking scan_fmt v0.1.3
[INFO] [stderr]     Checking chrono v0.2.25
[INFO] [stderr]     Checking num v0.3.0
[INFO] [stderr]     Checking nalgebra v0.2.23
[INFO] [stdout] error[E0432]: unresolved import `rand::Rand`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.2.23/src/structs/dmat.rs:9:18
[INFO] [stdout]   |
[INFO] [stdout] 9 | use rand::{self, Rand};
[INFO] [stdout]   |                  ^^^^ no `Rand` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `rand::Rand`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.2.23/src/structs/dvec.rs:9:18
[INFO] [stdout]   |
[INFO] [stdout] 9 | use rand::{self, Rand};
[INFO] [stdout]   |                  ^^^^ no `Rand` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `rand::Rand`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.2.23/src/structs/vec.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | use rand::{Rand, Rng};
[INFO] [stdout]    |            ^^^^ no `Rand` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `rand::Rand`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.2.23/src/structs/pnt.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | use rand::{Rand, Rng};
[INFO] [stdout]    |            ^^^^ no `Rand` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `rand::Rand`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.2.23/src/structs/quat.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | use rand::{Rand, Rng};
[INFO] [stdout]   |            ^^^^ no `Rand` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `rand::Rand`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.2.23/src/structs/mat.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | use rand::{Rand, Rng};
[INFO] [stdout]   |            ^^^^ no `Rand` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `rand::Rand`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.2.23/src/structs/rot.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rand::{Rand, Rng};
[INFO] [stdout]   |            ^^^^ no `Rand` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `rand::Rand`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.2.23/src/structs/iso.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | use rand::{Rand, Rng};
[INFO] [stdout]   |            ^^^^ no `Rand` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `rand::Rand`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.2.23/src/structs/spec/vec0.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rand::{Rand, Rng};
[INFO] [stdout]   |            ^^^^ no `Rand` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking bson v0.2.1
[INFO] [stdout] error: aborting due to 9 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nalgebra`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "719ad3c5e5ca7059d310a3d880e39d89a8cb982ac2ece9c55d14924dba75a248", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "719ad3c5e5ca7059d310a3d880e39d89a8cb982ac2ece9c55d14924dba75a248", kill_on_drop: false }`
[INFO] [stdout] 719ad3c5e5ca7059d310a3d880e39d89a8cb982ac2ece9c55d14924dba75a248