[INFO] fetching crate WelcomeBack 0.1.1...
[INFO] testing WelcomeBack-0.1.1 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate WelcomeBack 0.1.1 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate WelcomeBack 0.1.1
[INFO] finished tweaking crates.io crate WelcomeBack 0.1.1
[INFO] tweaked toml for crates.io crate WelcomeBack 0.1.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate WelcomeBack 0.1.1 on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4bf25be22223266bb43fb30a72635224d5d8e6f46b1cd3b7ee147383d0a5ae5e
[INFO] running `Command { std: "docker" "start" "-a" "4bf25be22223266bb43fb30a72635224d5d8e6f46b1cd3b7ee147383d0a5ae5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4bf25be22223266bb43fb30a72635224d5d8e6f46b1cd3b7ee147383d0a5ae5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bf25be22223266bb43fb30a72635224d5d8e6f46b1cd3b7ee147383d0a5ae5e", kill_on_drop: false }`
[INFO] [stdout] 4bf25be22223266bb43fb30a72635224d5d8e6f46b1cd3b7ee147383d0a5ae5e
[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=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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 2fe0296c1edd9c31df9da0b63c7750108ab1355a7d194259bb922f13de7f5754
[INFO] running `Command { std: "docker" "start" "-a" "2fe0296c1edd9c31df9da0b63c7750108ab1355a7d194259bb922f13de7f5754", kill_on_drop: false }`
[INFO] [stderr]    Compiling WelcomeBack v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/utils.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/person.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     for i in 1..n {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `WelcomeBack` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `welcome_back`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "2fe0296c1edd9c31df9da0b63c7750108ab1355a7d194259bb922f13de7f5754", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fe0296c1edd9c31df9da0b63c7750108ab1355a7d194259bb922f13de7f5754", kill_on_drop: false }`
[INFO] [stdout] 2fe0296c1edd9c31df9da0b63c7750108ab1355a7d194259bb922f13de7f5754
[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=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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 182a74352e1cb7e9406579153acdfed95a5e0f3872be53860818576e1262cdb1
[INFO] running `Command { std: "docker" "start" "-a" "182a74352e1cb7e9406579153acdfed95a5e0f3872be53860818576e1262cdb1", kill_on_drop: false }`
[INFO] [stderr]    Compiling WelcomeBack v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/utils.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/person.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     for i in 1..n {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `WelcomeBack` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `welcome_back`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved imports `crate::Per`, `crate::Person`
[INFO] [stdout]   --> src/person.rs:57:17
[INFO] [stdout]    |
[INFO] [stdout] 57 |     use crate::{Per, Person};
[INFO] [stdout]    |                 ^^^  ^^^^^^
[INFO] [stdout]    |                 |    |
[INFO] [stdout]    |                 |    no `Person` in the root
[INFO] [stdout]    |                 |    help: a similar name exists in the module: `person`
[INFO] [stdout]    |                 no `Per` in the root
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider importing this trait instead:
[INFO] [stdout]            crate::person::Per
[INFO] [stdout]    = help: consider importing this struct instead:
[INFO] [stdout]            crate::person::Person
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/utils.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `get_age` found for struct `Person` in the current scope
[INFO] [stdout]   --> src/person.rs:67:23
[INFO] [stdout]    |
[INFO] [stdout] 1  | pub struct Person {
[INFO] [stdout]    | ----------------- method `get_age` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 8  |     fn get_age(&self) -> i32;
[INFO] [stdout]    |        ------- the method is available for `Person` here
[INFO] [stdout] ...
[INFO] [stdout] 67 |         assert_eq!(jj.get_age(), 17)
[INFO] [stdout]    |                       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `Per` which provides `get_age` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]    |
[INFO] [stdout] 57 +     use crate::person::Per;
[INFO] [stdout]    |
[INFO] [stdout] help: there is a method `get_name` with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 67 -         assert_eq!(jj.get_age(), 17)
[INFO] [stdout] 67 +         assert_eq!(jj.get_name(), 17)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/person.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     for i in 1..n {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `WelcomeBack` (lib test) due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "182a74352e1cb7e9406579153acdfed95a5e0f3872be53860818576e1262cdb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "182a74352e1cb7e9406579153acdfed95a5e0f3872be53860818576e1262cdb1", kill_on_drop: false }`
[INFO] [stdout] 182a74352e1cb7e9406579153acdfed95a5e0f3872be53860818576e1262cdb1