[INFO] cloning repository https://github.com/amtf/hello_cargo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/amtf/hello_cargo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famtf%2Fhello_cargo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famtf%2Fhello_cargo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 75d702ffba89ed84ba0b7acdac402dcfffe08312
[INFO] checking amtf/hello_cargo against master#506512391b1a75ae450d36c9420978402a91abcc for pr-125384
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famtf%2Fhello_cargo" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/amtf/hello_cargo 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/amtf/hello_cargo
[INFO] finished tweaking git repo https://github.com/amtf/hello_cargo
[INFO] tweaked toml for git repo https://github.com/amtf/hello_cargo written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/amtf/hello_cargo 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-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] b08bd260fef3b5e28dcf3dcaa6a8cebf977d7a6ff66ea20b9ddcdb91271ab566
[INFO] running `Command { std: "docker" "start" "-a" "b08bd260fef3b5e28dcf3dcaa6a8cebf977d7a6ff66ea20b9ddcdb91271ab566", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b08bd260fef3b5e28dcf3dcaa6a8cebf977d7a6ff66ea20b9ddcdb91271ab566", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b08bd260fef3b5e28dcf3dcaa6a8cebf977d7a6ff66ea20b9ddcdb91271ab566", kill_on_drop: false }`
[INFO] [stdout] b08bd260fef3b5e28dcf3dcaa6a8cebf977d7a6ff66ea20b9ddcdb91271ab566
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] ca915bf8d1298083aac5627d7253dd18aa71163c11dc5bbda34026de1ebd4bca
[INFO] running `Command { std: "docker" "start" "-a" "ca915bf8d1298083aac5627d7253dd18aa71163c11dc5bbda34026de1ebd4bca", kill_on_drop: false }`
[INFO] [stderr]     Checking hello_cargo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0282]: type annotations needed for `Option<_>`
[INFO] [stdout]  --> src/main.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let num = None;
[INFO] [stdout]   |         ^^^   ---- type must be known at this point
[INFO] [stdout]   |
[INFO] [stdout] help: consider giving `num` an explicit type, where the type for type parameter `T` is specified
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let num: Option<T> = None;
[INFO] [stdout]   |            +++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed for `Option<_>`
[INFO] [stdout]  --> src/main.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let num = None;
[INFO] [stdout]   |         ^^^   ---- type must be known at this point
[INFO] [stdout]   |
[INFO] [stdout] help: consider giving `num` an explicit type, where the type for type parameter `T` is specified
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let num: Option<T> = None;
[INFO] [stdout]   |            +++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hello_cargo` (bin "hello_cargo") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `hello_cargo` (bin "hello_cargo" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "ca915bf8d1298083aac5627d7253dd18aa71163c11dc5bbda34026de1ebd4bca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca915bf8d1298083aac5627d7253dd18aa71163c11dc5bbda34026de1ebd4bca", kill_on_drop: false }`
[INFO] [stdout] ca915bf8d1298083aac5627d7253dd18aa71163c11dc5bbda34026de1ebd4bca
[INFO] checking amtf/hello_cargo against try#dae34b759e282c069aa28752564694effd121a63 for pr-125384
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famtf%2Fhello_cargo" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/amtf/hello_cargo on toolchain dae34b759e282c069aa28752564694effd121a63
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dae34b759e282c069aa28752564694effd121a63" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/amtf/hello_cargo
[INFO] finished tweaking git repo https://github.com/amtf/hello_cargo
[INFO] tweaked toml for git repo https://github.com/amtf/hello_cargo written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/amtf/hello_cargo 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" "+dae34b759e282c069aa28752564694effd121a63" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "+dae34b759e282c069aa28752564694effd121a63" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 90a4333ff954981a9236b48b68b3ad695411a5ea2a1748b214ebc4563b34f5e3
[INFO] running `Command { std: "docker" "start" "-a" "90a4333ff954981a9236b48b68b3ad695411a5ea2a1748b214ebc4563b34f5e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90a4333ff954981a9236b48b68b3ad695411a5ea2a1748b214ebc4563b34f5e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90a4333ff954981a9236b48b68b3ad695411a5ea2a1748b214ebc4563b34f5e3", kill_on_drop: false }`
[INFO] [stdout] 90a4333ff954981a9236b48b68b3ad695411a5ea2a1748b214ebc4563b34f5e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "+dae34b759e282c069aa28752564694effd121a63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ddfa90e6663b16d63c2093b32b379111a8320970a1b6098625c458fea67e7ea4
[INFO] running `Command { std: "docker" "start" "-a" "ddfa90e6663b16d63c2093b32b379111a8320970a1b6098625c458fea67e7ea4", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] skipping non-2021 edition `2018`
[INFO] running `Command { std: "docker" "inspect" "ddfa90e6663b16d63c2093b32b379111a8320970a1b6098625c458fea67e7ea4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddfa90e6663b16d63c2093b32b379111a8320970a1b6098625c458fea67e7ea4", kill_on_drop: false }`
[INFO] [stdout] ddfa90e6663b16d63c2093b32b379111a8320970a1b6098625c458fea67e7ea4