[INFO] cloning repository https://github.com/arpankapoor/ak
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arpankapoor/ak" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farpankapoor%2Fak", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farpankapoor%2Fak'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7f34b3057440a11cd142708353e49ed2c1167584
[INFO] checking arpankapoor/ak against master#506512391b1a75ae450d36c9420978402a91abcc for pr-125384
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farpankapoor%2Fak" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/arpankapoor/ak on toolchain 506512391b1a75ae450d36c9420978402a91abcc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/arpankapoor/ak
[INFO] finished tweaking git repo https://github.com/arpankapoor/ak
[INFO] tweaked toml for git repo https://github.com/arpankapoor/ak written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/arpankapoor/ak already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a22116f9d0f752364e99970f54d4bd2805fdd45a9de5a60aeaf3d1571d65b6c3
[INFO] running `Command { std: "docker" "start" "-a" "a22116f9d0f752364e99970f54d4bd2805fdd45a9de5a60aeaf3d1571d65b6c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a22116f9d0f752364e99970f54d4bd2805fdd45a9de5a60aeaf3d1571d65b6c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a22116f9d0f752364e99970f54d4bd2805fdd45a9de5a60aeaf3d1571d65b6c3", kill_on_drop: false }`
[INFO] [stdout] a22116f9d0f752364e99970f54d4bd2805fdd45a9de5a60aeaf3d1571d65b6c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d1ba0ee3fdb3cf3ba6d501e3989f818d7f107e75d07b2741d6d6bec7b402ca86
[INFO] running `Command { std: "docker" "start" "-a" "d1ba0ee3fdb3cf3ba6d501e3989f818d7f107e75d07b2741d6d6bec7b402ca86", kill_on_drop: false }`
[INFO] [stderr]     Checking ak v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `std::lazy`
[INFO] [stdout]  --> src/environ.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::lazy::SyncLazy;
[INFO] [stdout]   |          ^^^^ could not find `lazy` in `std`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::lazy`
[INFO] [stdout]  --> src/sym.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::lazy::SyncLazy;
[INFO] [stdout]   |          ^^^^ could not find `lazy` in `std`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::lazy`
[INFO] [stdout]  --> src/environ.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::lazy::SyncLazy;
[INFO] [stdout]   |          ^^^^ could not find `lazy` in `std`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::lazy`
[INFO] [stdout]  --> src/sym.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::lazy::SyncLazy;
[INFO] [stdout]   |          ^^^^ could not find `lazy` in `std`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 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 `ak` (bin "ak") due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 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 `ak` (bin "ak" test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "d1ba0ee3fdb3cf3ba6d501e3989f818d7f107e75d07b2741d6d6bec7b402ca86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1ba0ee3fdb3cf3ba6d501e3989f818d7f107e75d07b2741d6d6bec7b402ca86", kill_on_drop: false }`
[INFO] [stdout] d1ba0ee3fdb3cf3ba6d501e3989f818d7f107e75d07b2741d6d6bec7b402ca86