[INFO] cloning repository https://github.com/eddogola/rust-examples
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/eddogola/rust-examples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feddogola%2Frust-examples", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feddogola%2Frust-examples'...
[INFO] [stderr] fatal: write error: No space left on device
[INFO] [stderr] fatal: fetch-pack: invalid index-pack output
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/eddogola/rust-examples
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/eddogola/rust-examples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feddogola%2Frust-examples", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feddogola%2Frust-examples'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 047bd62e44b4de451fa39376035fdec8ba0c314d
[INFO] checking eddogola/rust-examples against master#69fd5e4059f8840f09f60269bcda23dcdcb77151 for pr-135733
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feddogola%2Frust-examples" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/eddogola/rust-examples on toolchain 69fd5e4059f8840f09f60269bcda23dcdcb77151
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+69fd5e4059f8840f09f60269bcda23dcdcb77151" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/eddogola/rust-examples
[INFO] finished tweaking git repo https://github.com/eddogola/rust-examples
[INFO] tweaked toml for git repo https://github.com/eddogola/rust-examples written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/eddogola/rust-examples 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" "+69fd5e4059f8840f09f60269bcda23dcdcb77151" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+69fd5e4059f8840f09f60269bcda23dcdcb77151" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6e4b11e2ce9b3667de4a8bdcb89ac5520f89777b6b5f5844c8fe9b15d416aadf
[INFO] running `Command { std: "docker" "start" "-a" "6e4b11e2ce9b3667de4a8bdcb89ac5520f89777b6b5f5844c8fe9b15d416aadf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e4b11e2ce9b3667de4a8bdcb89ac5520f89777b6b5f5844c8fe9b15d416aadf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e4b11e2ce9b3667de4a8bdcb89ac5520f89777b6b5f5844c8fe9b15d416aadf", kill_on_drop: false }`
[INFO] [stdout] 6e4b11e2ce9b3667de4a8bdcb89ac5520f89777b6b5f5844c8fe9b15d416aadf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+69fd5e4059f8840f09f60269bcda23dcdcb77151" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 23db8a897fb9bb9ce3d708881d712ca9c758cab283f983856c98437d757d83f7
[INFO] running `Command { std: "docker" "start" "-a" "23db8a897fb9bb9ce3d708881d712ca9c758cab283f983856c98437d757d83f7", kill_on_drop: false }`
[INFO] [stderr]     Checking intops v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0368]: binary assignment operation `+=` cannot be applied to type `&mut {integer}`
[INFO] [stdout]   --> src/main.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |         map.entry(num).or_insert(0) += 1;
[INFO] [stdout]    |         ---------------------------^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         cannot use `+=` on type `&mut {integer}`
[INFO] [stdout]    |
[INFO] [stdout] help: `+=` can be used on `{integer}` if you dereference the left-hand side
[INFO] [stdout]    |
[INFO] [stdout] 39 |         *map.entry(num).or_insert(0) += 1;
[INFO] [stdout]    |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0368]: binary assignment operation `+=` cannot be applied to type `&mut {integer}`
[INFO] [stdout]   --> src/main.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |         map.entry(num).or_insert(0) += 1;
[INFO] [stdout]    |         ---------------------------^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         cannot use `+=` on type `&mut {integer}`
[INFO] [stdout]    |
[INFO] [stdout] help: `+=` can be used on `{integer}` if you dereference the left-hand side
[INFO] [stdout]    |
[INFO] [stdout] 39 |         *map.entry(num).or_insert(0) += 1;
[INFO] [stdout]    |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |   fn mode(numbers: &[i32]) -> i32 {
[INFO] [stdout]    |                               --- expected `i32` because of return type
[INFO] [stdout] ...
[INFO] [stdout] 38 | /     for num in numbers {
[INFO] [stdout] 39 | |         map.entry(num).or_insert(0) += 1;
[INFO] [stdout] 40 | |     }
[INFO] [stdout]    | |_____^ expected `i32`, found `()`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `for` loops evaluate to unit type `()`
[INFO] [stdout] help: consider returning a value here
[INFO] [stdout]    |
[INFO] [stdout] 40 ~     }
[INFO] [stdout] 41 +     /* `i32` value */
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |   fn mode(numbers: &[i32]) -> i32 {
[INFO] [stdout]    |                               --- expected `i32` because of return type
[INFO] [stdout] ...
[INFO] [stdout] 38 | /     for num in numbers {
[INFO] [stdout] 39 | |         map.entry(num).or_insert(0) += 1;
[INFO] [stdout] 40 | |     }
[INFO] [stdout]    | |_____^ expected `i32`, found `()`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `for` loops evaluate to unit type `()`
[INFO] [stdout] help: consider returning a value here
[INFO] [stdout]    |
[INFO] [stdout] 40 ~     }
[INFO] [stdout] 41 +     /* `i32` value */
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0368.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0368.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `intops` (bin "intops") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `intops` (bin "intops" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "23db8a897fb9bb9ce3d708881d712ca9c758cab283f983856c98437d757d83f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23db8a897fb9bb9ce3d708881d712ca9c758cab283f983856c98437d757d83f7", kill_on_drop: false }`
[INFO] [stdout] 23db8a897fb9bb9ce3d708881d712ca9c758cab283f983856c98437d757d83f7