[INFO] crate olaf2 0.0.3 is already in cache
[INFO] testing olaf2-0.0.3 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate olaf2 0.0.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate olaf2 0.0.3 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate olaf2 0.0.3
[INFO] finished tweaking crates.io crate olaf2 0.0.3
[INFO] tweaked toml for crates.io crate olaf2 0.0.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
[INFO] running `"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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] cdba737064803ce10e4de56909453a64e2f55526b5f595ac6024cdcc95e7e9a3
[INFO] running `"docker" "start" "-a" "cdba737064803ce10e4de56909453a64e2f55526b5f595ac6024cdcc95e7e9a3"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling curl v0.4.29
[INFO] [stderr]    Compiling canonical-path v0.1.1
[INFO] [stderr]    Compiling curl-sys v0.4.31+curl-7.70.0
[INFO] [stderr]    Compiling actix-web v0.7.19
[INFO] [stderr]    Compiling isatty v0.1.9
[INFO] [stderr]    Compiling cookie v0.12.0
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling flate2 v1.0.14
[INFO] [stderr]    Compiling aes v0.3.2
[INFO] [stderr]    Compiling serde_urlencoded v0.5.5
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling serde_qs v0.4.6
[INFO] [stderr]    Compiling url_serde v0.2.0
[INFO] [stderr]    Compiling tokio-signal v0.2.9
[INFO] [stderr]    Compiling simplelog v0.5.3
[INFO] [stderr]    Compiling trust-dns-proto v0.6.3
[INFO] [stderr]    Compiling trust-dns-proto v0.5.0
[INFO] [stderr]    Compiling aes-gcm v0.5.0
[INFO] [stderr]    Compiling cookie v0.11.3
[INFO] [stderr]    Compiling cookie_store v0.7.0
[INFO] [stderr]    Compiling reqwest v0.9.24
[INFO] [stderr]    Compiling trust-dns-resolver v0.10.3
[INFO] [stderr]    Compiling abscissa_derive v0.0.2
[INFO] [stderr]    Compiling actix v0.7.9
[INFO] [stderr]    Compiling abscissa v0.0.4
[INFO] [stderr]    Compiling actix-net v0.2.6
[INFO] [stderr]    Compiling oauth2 v2.0.0
[INFO] [stderr]    Compiling olaf2 v0.0.3 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0252]: the name `Serialize` is defined multiple times
[INFO] [stderr]  --> src/msgs.rs:3:33
[INFO] [stderr]   |
[INFO] [stderr] 2 | use serde::{de::DeserializeOwned, Serialize};
[INFO] [stderr]   |                                   --------- previous import of the macro `Serialize` here
[INFO] [stderr] 3 | use serde_derive::{Deserialize, Serialize};
[INFO] [stderr]   |                                 ^^^^^^^^^ `Serialize` reimported here
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Serialize` must be defined only once in the macro namespace of this module
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `actix_web::server::Server`
[INFO] [stderr]   --> src/client.rs:14:20
[INFO] [stderr]    |
[INFO] [stderr] 14 |     server::{self, Server},
[INFO] [stderr]    |                    ^^^^^^ no `Server` in `server`
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]    --> src/lib.rs:151:1
[INFO] [stderr]     |
[INFO] [stderr] 151 | #![feature(uniform_paths)]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `lazy_static::lazy_static`
[INFO] [stderr]   --> src/client.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | use lazy_static::lazy_static;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde_derive::Deserialize`
[INFO] [stderr]   --> src/client.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | use serde_derive::Deserialize;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::util::*`
[INFO] [stderr]   --> src/client.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 | use crate::util::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `de::DeserializeOwned`
[INFO] [stderr]  --> src/msgs.rs:2:13
[INFO] [stderr]   |
[INFO] [stderr] 2 | use serde::{de::DeserializeOwned, Serialize};
[INFO] [stderr]   |             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Serialize`
[INFO] [stderr]  --> src/msgs.rs:3:33
[INFO] [stderr]   |
[INFO] [stderr] 3 | use serde_derive::{Deserialize, Serialize};
[INFO] [stderr]   |                                 ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors; 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0252, E0432, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0252`.
[INFO] [stderr] error: could not compile `olaf2`.
[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 `"docker" "inspect" "cdba737064803ce10e4de56909453a64e2f55526b5f595ac6024cdcc95e7e9a3"`
[INFO] running `"docker" "rm" "-f" "cdba737064803ce10e4de56909453a64e2f55526b5f595ac6024cdcc95e7e9a3"`
[INFO] [stdout] cdba737064803ce10e4de56909453a64e2f55526b5f595ac6024cdcc95e7e9a3