[INFO] cloning repository https://github.com/Xedon/rust_workshop
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Xedon/rust_workshop" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXedon%2Frust_workshop", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXedon%2Frust_workshop'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5df7f56137bbc5afc828b4378f016ad869cf7760
[INFO] checking Xedon/rust_workshop against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXedon%2Frust_workshop" "/workspace/builds/worker-30/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-30/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Xedon/rust_workshop on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Xedon/rust_workshop
[INFO] finished tweaking git repo https://github.com/Xedon/rust_workshop
[INFO] tweaked toml for git repo https://github.com/Xedon/rust_workshop written to /workspace/builds/worker-30/source/Cargo.toml
[INFO] crate git repo https://github.com/Xedon/rust_workshop already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 540ccb729a13361f038e950c0850cd90cf44263628649c444a259c0979cf36bc
[INFO] running `Command { std: "docker" "start" "-a" "540ccb729a13361f038e950c0850cd90cf44263628649c444a259c0979cf36bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "540ccb729a13361f038e950c0850cd90cf44263628649c444a259c0979cf36bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "540ccb729a13361f038e950c0850cd90cf44263628649c444a259c0979cf36bc", kill_on_drop: false }`
[INFO] [stdout] 540ccb729a13361f038e950c0850cd90cf44263628649c444a259c0979cf36bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dacf19a761de3cbba0c7618fc8fe246a8e8e5a35c34e93702230c8be62656ade
[INFO] running `Command { std: "docker" "start" "-a" "dacf19a761de3cbba0c7618fc8fe246a8e8e5a35c34e93702230c8be62656ade", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rust-starter v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating examples/1_primitves.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/6_result.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/5_optional.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/2_custom_types.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/4_functions.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/3_flow_control.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed examples/1_primitves.rs (4 fixes)
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]   --> examples/1_primitves.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let mut x = "a";
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Error`
[INFO] [stdout]   --> examples/3_flow_control.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         Error(String),
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.55s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rust-starter v0.1.0 (/tmp/fixit)
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]   --> examples/1_primitves.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let mut x = "a";
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Error`
[INFO] [stdout]   --> examples/3_flow_control.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         Error(String),
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.98s
[INFO] running `Command { std: "docker" "inspect" "dacf19a761de3cbba0c7618fc8fe246a8e8e5a35c34e93702230c8be62656ade", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dacf19a761de3cbba0c7618fc8fe246a8e8e5a35c34e93702230c8be62656ade", kill_on_drop: false }`
[INFO] [stdout] dacf19a761de3cbba0c7618fc8fe246a8e8e5a35c34e93702230c8be62656ade