[INFO] cloning repository https://github.com/Lawouach/chaostoolkit-from-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Lawouach/chaostoolkit-from-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLawouach%2Fchaostoolkit-from-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLawouach%2Fchaostoolkit-from-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 392a84cfcf632d4cbfcda6924451787b03502065
[INFO] checking Lawouach/chaostoolkit-from-rust against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLawouach%2Fchaostoolkit-from-rust" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Lawouach/chaostoolkit-from-rust on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Lawouach/chaostoolkit-from-rust
[INFO] finished tweaking git repo https://github.com/Lawouach/chaostoolkit-from-rust
[INFO] tweaked toml for git repo https://github.com/Lawouach/chaostoolkit-from-rust written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Lawouach/chaostoolkit-from-rust 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unindent v0.1.8
[INFO] [stderr]   Downloaded pyo3-macros v0.15.1
[INFO] [stderr]   Downloaded indoc-impl v0.3.6
[INFO] [stderr]   Downloaded paste v0.1.18
[INFO] [stderr]   Downloaded indoc v0.3.6
[INFO] [stderr]   Downloaded paste-impl v0.1.18
[INFO] [stderr]   Downloaded pyo3 v0.15.1
[INFO] [stderr]   Downloaded pyo3-build-config v0.15.1
[INFO] [stderr]   Downloaded pyo3-macros-backend v0.15.1
[INFO] [stderr]   Downloaded pythonize v0.15.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f038c6bcd26895beddac171d18ec76f9337a9deda75508edb19fc03299ece9e9
[INFO] running `Command { std: "docker" "start" "-a" "f038c6bcd26895beddac171d18ec76f9337a9deda75508edb19fc03299ece9e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f038c6bcd26895beddac171d18ec76f9337a9deda75508edb19fc03299ece9e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f038c6bcd26895beddac171d18ec76f9337a9deda75508edb19fc03299ece9e9", kill_on_drop: false }`
[INFO] [stdout] f038c6bcd26895beddac171d18ec76f9337a9deda75508edb19fc03299ece9e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ecd1f072cb84397f853f1ede43b8fb2842a28578a64c394a34cc118f33f2930
[INFO] running `Command { std: "docker" "start" "-a" "0ecd1f072cb84397f853f1ede43b8fb2842a28578a64c394a34cc118f33f2930", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling pyo3-build-config v0.15.1
[INFO] [stderr]    Compiling once_cell v1.9.0
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]    Compiling unindent v0.1.8
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking paste v0.1.18
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]    Compiling pyo3 v0.15.1
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling pyo3-macros-backend v0.15.1
[INFO] [stderr]    Compiling indoc-impl v0.3.6
[INFO] [stderr]     Checking indoc v0.3.6
[INFO] [stderr]    Compiling pyo3-macros v0.15.1
[INFO] [stderr]     Checking pythonize v0.15.0
[INFO] [stderr]     Checking ctkrust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `journal`
[INFO] [stdout]   --> src/main.rs:78:13
[INFO] [stdout]    |
[INFO] [stdout] 78 |         let journal = run_experiment(py, experiment)?;
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_journal`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constants `AFTER_METHOD`, `DURING_METHOD`, and `CONTINUOUS` are never used
[INFO] [stdout]   --> src/main.rs:22:11
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl Strategy {
[INFO] [stdout]    | ------------- associated constants in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 22 |     const AFTER_METHOD: &'static str = "after-method-only";
[INFO] [stdout]    |           ^^^^^^^^^^^^
[INFO] [stdout] 23 |     const DURING_METHOD: &'static str = "during-method-only";
[INFO] [stdout]    |           ^^^^^^^^^^^^^
[INFO] [stdout] 24 |     const DEFAULT: &'static str = "default";
[INFO] [stdout] 25 |     const CONTINUOUS: &'static str = "continuous";
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `journal`
[INFO] [stdout]   --> src/main.rs:78:13
[INFO] [stdout]    |
[INFO] [stdout] 78 |         let journal = run_experiment(py, experiment)?;
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_journal`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constants `AFTER_METHOD`, `DURING_METHOD`, and `CONTINUOUS` are never used
[INFO] [stdout]   --> src/main.rs:22:11
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl Strategy {
[INFO] [stdout]    | ------------- associated constants in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 22 |     const AFTER_METHOD: &'static str = "after-method-only";
[INFO] [stdout]    |           ^^^^^^^^^^^^
[INFO] [stdout] 23 |     const DURING_METHOD: &'static str = "during-method-only";
[INFO] [stdout]    |           ^^^^^^^^^^^^^
[INFO] [stdout] 24 |     const DEFAULT: &'static str = "default";
[INFO] [stdout] 25 |     const CONTINUOUS: &'static str = "continuous";
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 21.65s
[INFO] running `Command { std: "docker" "inspect" "0ecd1f072cb84397f853f1ede43b8fb2842a28578a64c394a34cc118f33f2930", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ecd1f072cb84397f853f1ede43b8fb2842a28578a64c394a34cc118f33f2930", kill_on_drop: false }`
[INFO] [stdout] 0ecd1f072cb84397f853f1ede43b8fb2842a28578a64c394a34cc118f33f2930
[INFO] checking Lawouach/chaostoolkit-from-rust against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLawouach%2Fchaostoolkit-from-rust" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Lawouach/chaostoolkit-from-rust on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Lawouach/chaostoolkit-from-rust
[INFO] finished tweaking git repo https://github.com/Lawouach/chaostoolkit-from-rust
[INFO] tweaked toml for git repo https://github.com/Lawouach/chaostoolkit-from-rust written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Lawouach/chaostoolkit-from-rust 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1e7005a37d37a5c97b39d63ffd357da62bedb5cc8477a7aa9c39304d7c08c65a
[INFO] running `Command { std: "docker" "start" "-a" "1e7005a37d37a5c97b39d63ffd357da62bedb5cc8477a7aa9c39304d7c08c65a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e7005a37d37a5c97b39d63ffd357da62bedb5cc8477a7aa9c39304d7c08c65a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e7005a37d37a5c97b39d63ffd357da62bedb5cc8477a7aa9c39304d7c08c65a", kill_on_drop: false }`
[INFO] [stdout] 1e7005a37d37a5c97b39d63ffd357da62bedb5cc8477a7aa9c39304d7c08c65a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] af2e2148d8e8d3be499f632b6f278c1532880a9dac1f489305c14acae405e7f1
[INFO] running `Command { std: "docker" "start" "-a" "af2e2148d8e8d3be499f632b6f278c1532880a9dac1f489305c14acae405e7f1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling pyo3-build-config v0.15.1
[INFO] [stderr]    Compiling once_cell v1.9.0
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]    Compiling unindent v0.1.8
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking paste v0.1.18
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling pyo3 v0.15.1
[INFO] [stderr]    Compiling pyo3-macros-backend v0.15.1
[INFO] [stderr]    Compiling indoc-impl v0.3.6
[INFO] [stderr]     Checking indoc v0.3.6
[INFO] [stderr]    Compiling pyo3-macros v0.15.1
[INFO] [stderr]     Checking pythonize v0.15.0
[INFO] [stderr]     Checking ctkrust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `journal`
[INFO] [stdout]   --> src/main.rs:78:13
[INFO] [stdout]    |
[INFO] [stdout] 78 |         let journal = run_experiment(py, experiment)?;
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_journal`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constants `AFTER_METHOD`, `DURING_METHOD`, and `CONTINUOUS` are never used
[INFO] [stdout]   --> src/main.rs:22:11
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl Strategy {
[INFO] [stdout]    | ------------- associated constants in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 22 |     const AFTER_METHOD: &'static str = "after-method-only";
[INFO] [stdout]    |           ^^^^^^^^^^^^
[INFO] [stdout] 23 |     const DURING_METHOD: &'static str = "during-method-only";
[INFO] [stdout]    |           ^^^^^^^^^^^^^
[INFO] [stdout] 24 |     const DEFAULT: &'static str = "default";
[INFO] [stdout] 25 |     const CONTINUOUS: &'static str = "continuous";
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `journal`
[INFO] [stdout]   --> src/main.rs:78:13
[INFO] [stdout]    |
[INFO] [stdout] 78 |         let journal = run_experiment(py, experiment)?;
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_journal`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated constants `AFTER_METHOD`, `DURING_METHOD`, and `CONTINUOUS` are never used
[INFO] [stdout]   --> src/main.rs:22:11
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl Strategy {
[INFO] [stdout]    | ------------- associated constants in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 22 |     const AFTER_METHOD: &'static str = "after-method-only";
[INFO] [stdout]    |           ^^^^^^^^^^^^
[INFO] [stdout] 23 |     const DURING_METHOD: &'static str = "during-method-only";
[INFO] [stdout]    |           ^^^^^^^^^^^^^
[INFO] [stdout] 24 |     const DEFAULT: &'static str = "default";
[INFO] [stdout] 25 |     const CONTINUOUS: &'static str = "continuous";
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 23.15s
[INFO] running `Command { std: "docker" "inspect" "af2e2148d8e8d3be499f632b6f278c1532880a9dac1f489305c14acae405e7f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af2e2148d8e8d3be499f632b6f278c1532880a9dac1f489305c14acae405e7f1", kill_on_drop: false }`
[INFO] [stdout] af2e2148d8e8d3be499f632b6f278c1532880a9dac1f489305c14acae405e7f1