[INFO] fetching crate two_timer 2.1.0...
[INFO] testing two_timer-2.1.0 against 1.45.2 for beta-1.46-1
[INFO] extracting crate two_timer 2.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate two_timer 2.1.0 on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate two_timer 2.1.0
[INFO] finished tweaking crates.io crate two_timer 2.1.0
[INFO] tweaked toml for crates.io crate two_timer 2.1.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate two_timer 2.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ca57e22c387bcb259d58958af04c4ef410ef4351a227a3360a6522b8a3e9e118
[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" "ca57e22c387bcb259d58958af04c4ef410ef4351a227a3360a6522b8a3e9e118", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca57e22c387bcb259d58958af04c4ef410ef4351a227a3360a6522b8a3e9e118", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca57e22c387bcb259d58958af04c4ef410ef4351a227a3360a6522b8a3e9e118", kill_on_drop: false }`
[INFO] [stdout] ca57e22c387bcb259d58958af04c4ef410ef4351a227a3360a6522b8a3e9e118
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--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] a8b0047e9cdf531892f74b9b22d4479878d261670122972ab8a2137e7dc78d06
[INFO] running `Command { std: "docker" "start" "-a" "a8b0047e9cdf531892f74b9b22d4479878d261670122972ab8a2137e7dc78d06", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.3
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling serde v1.0.100
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling regex-syntax v0.6.16
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling itoa v0.4.4
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling chrono v0.4.10
[INFO] [stderr]    Compiling regex v1.3.4
[INFO] [stderr]    Compiling serde_derive v1.0.100
[INFO] [stderr]    Compiling serde_regex v0.4.0
[INFO] [stderr]    Compiling serde_json v1.0.48
[INFO] [stderr]    Compiling pidgin v0.4.0
[INFO] [stderr]    Compiling two_timer v2.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 02s
[INFO] running `Command { std: "docker" "inspect" "a8b0047e9cdf531892f74b9b22d4479878d261670122972ab8a2137e7dc78d06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8b0047e9cdf531892f74b9b22d4479878d261670122972ab8a2137e7dc78d06", kill_on_drop: false }`
[INFO] [stdout] a8b0047e9cdf531892f74b9b22d4479878d261670122972ab8a2137e7dc78d06
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9071cc27aa4fb56a77f008543bb3a176a1ac855272879c01fa6eddcef928baee
[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" "9071cc27aa4fb56a77f008543bb3a176a1ac855272879c01fa6eddcef928baee", kill_on_drop: false }`
[INFO] [stderr]    Compiling two_timer v2.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> tests/tests.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `two_timer`.
[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" "9071cc27aa4fb56a77f008543bb3a176a1ac855272879c01fa6eddcef928baee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9071cc27aa4fb56a77f008543bb3a176a1ac855272879c01fa6eddcef928baee", kill_on_drop: false }`
[INFO] [stdout] 9071cc27aa4fb56a77f008543bb3a176a1ac855272879c01fa6eddcef928baee