[INFO] fetching crate off-side 0.1.1...
[INFO] testing off-side-0.1.1 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate off-side 0.1.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate off-side 0.1.1 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate off-side 0.1.1
[INFO] finished tweaking crates.io crate off-side 0.1.1
[INFO] tweaked toml for crates.io crate off-side 0.1.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded indent-stack v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6fb34fe8d5088b0fe64b40798f56e31a93fb612e2e2c976c51275604df1697cb
[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" "6fb34fe8d5088b0fe64b40798f56e31a93fb612e2e2c976c51275604df1697cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6fb34fe8d5088b0fe64b40798f56e31a93fb612e2e2c976c51275604df1697cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fb34fe8d5088b0fe64b40798f56e31a93fb612e2e2c976c51275604df1697cb", kill_on_drop: false }`
[INFO] [stdout] 6fb34fe8d5088b0fe64b40798f56e31a93fb612e2e2c976c51275604df1697cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16a845d151155800a3c09bf46864173244da46f76f19ed3153f9d39e26e69eb4
[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" "16a845d151155800a3c09bf46864173244da46f76f19ed3153f9d39e26e69eb4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling indent-stack v0.1.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling off-side v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.48s
[INFO] running `Command { std: "docker" "inspect" "16a845d151155800a3c09bf46864173244da46f76f19ed3153f9d39e26e69eb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16a845d151155800a3c09bf46864173244da46f76f19ed3153f9d39e26e69eb4", kill_on_drop: false }`
[INFO] [stdout] 16a845d151155800a3c09bf46864173244da46f76f19ed3153f9d39e26e69eb4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 18d454b9750700d556868fd3224288123317c493d320445e4323283a841e2154
[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" "18d454b9750700d556868fd3224288123317c493d320445e4323283a841e2154", kill_on_drop: false }`
[INFO] [stderr]    Compiling off-side v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: return types are denoted using `->`
[INFO] [stdout]   --> tests/world.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | / off_side! {
[INFO] [stdout] 19 | |
[INFO] [stdout] 20 | | fn main():
[INFO] [stdout] 21 | |     if true:
[INFO] [stdout] 22 | |         println!("Hello, world!");
[INFO] [stdout] 23 | |
[INFO] [stdout] 24 | | }
[INFO] [stdout]    | |_^ help: use `->` instead
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected type, found keyword `if`
[INFO] [stdout]   --> tests/world.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | / off_side! {
[INFO] [stdout] 19 | |
[INFO] [stdout] 20 | | fn main():
[INFO] [stdout] 21 | |     if true:
[INFO] [stdout] 22 | |         println!("Hello, world!");
[INFO] [stdout] 23 | |
[INFO] [stdout] 24 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `off-side`
[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] [stdout] error: expected one of `!`, `+`, `::`, `;`, `where`, or `{`, found `:`
[INFO] [stdout]   --> tests/let-match.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | / off_side! {
[INFO] [stdout] 21 | |
[INFO] [stdout] 22 | | fn try_int(i: i32) -> Result<i32, Error>:
[INFO] [stdout] 23 | |     match i:
[INFO] [stdout] ...  |
[INFO] [stdout] 35 | |
[INFO] [stdout] 36 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ErrorKind`, `Error`
[INFO] [stdout]   --> tests/let-match.rs:18:15
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::io::{Error, ErrorKind};
[INFO] [stdout]    |               ^^^^^  ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "18d454b9750700d556868fd3224288123317c493d320445e4323283a841e2154", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18d454b9750700d556868fd3224288123317c493d320445e4323283a841e2154", kill_on_drop: false }`
[INFO] [stdout] 18d454b9750700d556868fd3224288123317c493d320445e4323283a841e2154