[INFO] fetching crate myveryhotcrate 0.1.0...
[INFO] checking myveryhotcrate-0.1.0 against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] extracting crate myveryhotcrate 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate myveryhotcrate 0.1.0 on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate myveryhotcrate 0.1.0
[INFO] finished tweaking crates.io crate myveryhotcrate 0.1.0
[INFO] tweaked toml for crates.io crate myveryhotcrate 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate myveryhotcrate 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e5f2d74685cd5f2b1337dce76524b7a12a8def1546e936b75e4463fdef6023a9
[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" "e5f2d74685cd5f2b1337dce76524b7a12a8def1546e936b75e4463fdef6023a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5f2d74685cd5f2b1337dce76524b7a12a8def1546e936b75e4463fdef6023a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5f2d74685cd5f2b1337dce76524b7a12a8def1546e936b75e4463fdef6023a9", kill_on_drop: false }`
[INFO] [stdout] e5f2d74685cd5f2b1337dce76524b7a12a8def1546e936b75e4463fdef6023a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fb772a895f7f0c5765585ca6aa887e344ccbd2fb2301fee902535313678427a7
[INFO] running `Command { std: "docker" "start" "-a" "fb772a895f7f0c5765585ca6aa887e344ccbd2fb2301fee902535313678427a7", kill_on_drop: false }`
[INFO] [stderr]     Checking myveryhotcrate v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/tt/errors.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/tt/errors.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `UserID`
[INFO] [stdout]  --> src/mod_1.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | type UserID = String;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Options`
[INFO] [stdout]  --> src/mod_1.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Options {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `FetchOption`
[INFO] [stdout]  --> src/mod_1.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | type FetchOption = Box<dyn FnOnce(&mut Options)>;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fetch_option_set_user_id`
[INFO] [stdout]  --> src/mod_1.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn fetch_option_set_user_id(user_id: UserID) -> FetchOption {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `apply_options`
[INFO] [stdout]   --> src/mod_1.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn apply_options(options: Vec<FetchOption>) -> Options {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ErrCardNotFound`
[INFO] [stdout]  --> src/tt/errors.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     ErrCardNotFound,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ErrTransactionNotFound`
[INFO] [stdout]  --> src/tt/errors.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     ErrTransactionNotFound,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dada`
[INFO] [stdout]   --> src/tt/errors.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn dada() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]   --> src/tt/errors.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let r: Result<i32, Errors> = Ok(1);
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]   --> src/tt/errors.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let r: Result<i32, Errors> = Err(Errors::ErrCardNotFound);
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ErrTransactionNotFound`
[INFO] [stdout]  --> src/tt/errors.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     ErrTransactionNotFound,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dada`
[INFO] [stdout]   --> src/tt/errors.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn dada() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "fb772a895f7f0c5765585ca6aa887e344ccbd2fb2301fee902535313678427a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb772a895f7f0c5765585ca6aa887e344ccbd2fb2301fee902535313678427a7", kill_on_drop: false }`
[INFO] [stdout] fb772a895f7f0c5765585ca6aa887e344ccbd2fb2301fee902535313678427a7