[INFO] fetching crate python-objects 0.0.7...
[INFO] testing python-objects-0.0.7 against 1.90.0 for beta-1.91-3
[INFO] extracting crate python-objects 0.0.7 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate python-objects 0.0.7
[INFO] finished tweaking crates.io crate python-objects 0.0.7
[INFO] tweaked toml for crates.io crate python-objects 0.0.7 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate python-objects 0.0.7 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate python-objects 0.0.7 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded diff v0.1.12
[INFO] [stderr]   Downloaded output_vt100 v0.1.3
[INFO] [stderr]   Downloaded color-backtrace v0.5.1
[INFO] [stderr]   Downloaded semver v1.0.6
[INFO] [stderr]   Downloaded ctor v0.1.21
[INFO] [stderr]   Downloaded pretty_assertions v1.1.0
[INFO] [stderr]   Downloaded libc v0.2.119
[INFO] [stderr]   Downloaded rstest v0.12.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d5797d2de58b746d54c8dcd206bf2a1de1acd311eabe00e17a6e3ed7f220e8b5
[INFO] running `Command { std: "docker" "start" "-a" "d5797d2de58b746d54c8dcd206bf2a1de1acd311eabe00e17a6e3ed7f220e8b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5797d2de58b746d54c8dcd206bf2a1de1acd311eabe00e17a6e3ed7f220e8b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5797d2de58b746d54c8dcd206bf2a1de1acd311eabe00e17a6e3ed7f220e8b5", kill_on_drop: false }`
[INFO] [stdout] d5797d2de58b746d54c8dcd206bf2a1de1acd311eabe00e17a6e3ed7f220e8b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 65cb5975c1fb5e068ffc342c2e4518027c736f9c418378e634d812e732826069
[INFO] running `Command { std: "docker" "start" "-a" "65cb5975c1fb5e068ffc342c2e4518027c736f9c418378e634d812e732826069", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling gimli v0.26.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling unindent v0.1.8
[INFO] [stderr]    Compiling backtrace v0.3.64
[INFO] [stderr]    Compiling object v0.27.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling addr2line v0.17.0
[INFO] [stderr]    Compiling color-backtrace v0.5.1
[INFO] [stderr]    Compiling python-objects v0.0.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.36s
[INFO] running `Command { std: "docker" "inspect" "65cb5975c1fb5e068ffc342c2e4518027c736f9c418378e634d812e732826069", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65cb5975c1fb5e068ffc342c2e4518027c736f9c418378e634d812e732826069", kill_on_drop: false }`
[INFO] [stdout] 65cb5975c1fb5e068ffc342c2e4518027c736f9c418378e634d812e732826069
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bf32e07c059a4d2149bd4a81467504326a28a0316bb6ab6d299d5ec3ce0d80b6
[INFO] running `Command { std: "docker" "start" "-a" "bf32e07c059a4d2149bd4a81467504326a28a0316bb6ab6d299d5ec3ce0d80b6", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.6
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling diff v0.1.12
[INFO] [stderr]    Compiling pretty_assertions v1.1.0
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]    Compiling rstest v0.12.0
[INFO] [stderr]    Compiling python-objects v0.0.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> examples/enum_dict.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Int` is never constructed
[INFO] [stdout]  --> examples/enum_dict.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Int {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops`
[INFO] [stdout]  --> examples/unicode.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Index`
[INFO] [stdout]  --> examples/unicode.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::Index;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::string`
[INFO] [stdout]  --> examples/unicode.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::string;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iterate_over_unicode` is never used
[INFO] [stdout]  --> examples/unicode.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn iterate_over_unicode() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `string`
[INFO] [stdout]   --> examples/float_example.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let string = String::from("asd");
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_string`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 8.08s
[INFO] running `Command { std: "docker" "inspect" "bf32e07c059a4d2149bd4a81467504326a28a0316bb6ab6d299d5ec3ce0d80b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf32e07c059a4d2149bd4a81467504326a28a0316bb6ab6d299d5ec3ce0d80b6", kill_on_drop: false }`
[INFO] [stdout] bf32e07c059a4d2149bd4a81467504326a28a0316bb6ab6d299d5ec3ce0d80b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7687e7a75fc55d9ca194a874314d9c748d26cbc71d162b23c2d82ac5e225e3bc
[INFO] running `Command { std: "docker" "start" "-a" "7687e7a75fc55d9ca194a874314d9c748d26cbc71d162b23c2d82ac5e225e3bc", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::ops`
[INFO] [stderr]  --> examples/unicode.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::ops;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Index`
[INFO] [stderr]  --> examples/unicode.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::ops::Index;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::string`
[INFO] [stderr]  --> examples/unicode.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::string;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `iterate_over_unicode` is never used
[INFO] [stderr]  --> examples/unicode.rs:8:4
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn iterate_over_unicode() {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> examples/enum_dict.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Int` is never constructed
[INFO] [stderr]  --> examples/enum_dict.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct Int {
[INFO] [stderr]   |        ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `python-objects` (example "unicode") generated 4 warnings (run `cargo fix --example "unicode"` to apply 3 suggestions)
[INFO] [stderr] warning: `python-objects` (example "enum_dict") generated 2 warnings (run `cargo fix --example "enum_dict"` to apply 1 suggestion)
[INFO] [stderr] warning: unused variable: `string`
[INFO] [stderr]   --> examples/float_example.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let string = String::from("asd");
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_string`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `python-objects` (example "float_example") generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/python-af5ab17aa7ee77f4)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test_list.rs (/opt/rustwide/target/debug/deps/test_list-50049d888e8dc091)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test test_append_bool ... ok
[INFO] [stdout] test test_append_int ... ok
[INFO] [stdout] test test_extend ... ok
[INFO] [stdout] test test_initialization ... ok
[INFO] [stdout] test test_repr ... ok
[INFO] [stdout] test test_str ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests python
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/list/append.rs - list::append::List::append_back (line 156) ... ok
[INFO] [stdout] test src/list/list.rs - list::list::List::from (line 341) ... ok
[INFO] [stdout] test src/list/append_front.rs - list::append_front::List::append_front (line 85) ... ok
[INFO] [stdout] test src/lib.rs - (line 9) ... ok
[INFO] [stdout] test src/list/extend.rs - list::extend::Extend::extend (line 12) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.21s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7687e7a75fc55d9ca194a874314d9c748d26cbc71d162b23c2d82ac5e225e3bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7687e7a75fc55d9ca194a874314d9c748d26cbc71d162b23c2d82ac5e225e3bc", kill_on_drop: false }`
[INFO] [stdout] 7687e7a75fc55d9ca194a874314d9c748d26cbc71d162b23c2d82ac5e225e3bc