[INFO] fetching crate dvcompute_experiment 1.3.7...
[INFO] checking dvcompute_experiment-1.3.7 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate dvcompute_experiment 1.3.7 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate dvcompute_experiment 1.3.7 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 crates.io crate dvcompute_experiment 1.3.7
[INFO] finished tweaking crates.io crate dvcompute_experiment 1.3.7
[INFO] tweaked toml for crates.io crate dvcompute_experiment 1.3.7 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 35 packages
[INFO] [stderr]       Adding getrandom v0.1.16 (latest: v0.2.12)
[INFO] [stderr]       Adding rand v0.7.3 (latest: v0.8.5)
[INFO] [stderr]       Adding rand_chacha v0.2.2 (latest: v0.3.1)
[INFO] [stderr]       Adding rand_core v0.5.1 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_hc v0.2.0 (latest: v0.3.2)
[INFO] [stderr]       Adding wasi v0.9.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dvcompute_rand v1.3.3
[INFO] [stderr]   Downloaded dvcompute_utils v1.3.3
[INFO] [stderr]   Downloaded dvcompute v1.3.4
[INFO] [stderr]   Downloaded dvcompute_results v1.3.3
[INFO] [stderr]   Downloaded dvcompute_gpss v1.3.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] c2c0b49b91dd793b463863e9b2e5f36818cd5b0f8669d6e8d5ba0906d5ab8eea
[INFO] running `Command { std: "docker" "start" "-a" "c2c0b49b91dd793b463863e9b2e5f36818cd5b0f8669d6e8d5ba0906d5ab8eea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c2c0b49b91dd793b463863e9b2e5f36818cd5b0f8669d6e8d5ba0906d5ab8eea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2c0b49b91dd793b463863e9b2e5f36818cd5b0f8669d6e8d5ba0906d5ab8eea", kill_on_drop: false }`
[INFO] [stdout] c2c0b49b91dd793b463863e9b2e5f36818cd5b0f8669d6e8d5ba0906d5ab8eea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] acc4b9267e1a6dba431f99afc9b166a227630ef98456e1e1922b448e3ab05eeb
[INFO] running `Command { std: "docker" "start" "-a" "acc4b9267e1a6dba431f99afc9b166a227630ef98456e1e1922b448e3ab05eeb", kill_on_drop: false }`
[INFO] [stderr]     Checking dvcompute_utils v1.3.3
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking dvcompute_rand v1.3.3
[INFO] [stderr]     Checking dvcompute v1.3.4
[INFO] [stderr]     Checking dvcompute_gpss v1.3.5
[INFO] [stderr]     Checking dvcompute_results v1.3.3
[INFO] [stderr]     Checking dvcompute_experiment v1.3.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Default` is imported redundantly
[INFO] [stdout]  --> src/simulation/experiment/mod.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::default::Default;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Default` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `io` is imported redundantly
[INFO] [stdout]   --> src/simulation/experiment/rendering.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | use std::io;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 | use crate::simulation::experiment::*;
[INFO] [stdout]    |     -------------------------------- the item `io` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `result` is imported redundantly
[INFO] [stdout]   --> src/simulation/experiment/rendering.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::result;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 | use crate::simulation::experiment::*;
[INFO] [stdout]    |     -------------------------------- the item `result` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `simulation` is imported redundantly
[INFO] [stdout]   --> src/simulation/experiment/rendering.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use dvcompute::simulation;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 15 |
[INFO] [stdout] 16 | use crate::simulation::experiment::*;
[INFO] [stdout]    |     -------------------------------- the item `simulation` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Default` is imported redundantly
[INFO] [stdout]   --> src/simulation/experiment/view/last_value.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | use std::default::Default;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 | use crate::simulation::experiment::*;
[INFO] [stdout]    |     -------------------------------- the item `Default` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `result` is imported redundantly
[INFO] [stdout]   --> src/simulation/experiment/view/last_value.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::result;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 | use crate::simulation::experiment::*;
[INFO] [stdout]    |     -------------------------------- the item `result` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `urlencoding` is imported redundantly
[INFO] [stdout]   --> src/simulation/utils/html.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use urlencoding;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | extern crate urlencoding;
[INFO] [stdout]    | ------------------------- the item `urlencoding` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Default` is imported redundantly
[INFO] [stdout]  --> src/simulation/experiment/mod.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::default::Default;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Default` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `io` is imported redundantly
[INFO] [stdout]   --> src/simulation/experiment/rendering.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | use std::io;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 | use crate::simulation::experiment::*;
[INFO] [stdout]    |     -------------------------------- the item `io` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `result` is imported redundantly
[INFO] [stdout]   --> src/simulation/experiment/rendering.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::result;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 | use crate::simulation::experiment::*;
[INFO] [stdout]    |     -------------------------------- the item `result` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `simulation` is imported redundantly
[INFO] [stdout]   --> src/simulation/experiment/rendering.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use dvcompute::simulation;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 15 |
[INFO] [stdout] 16 | use crate::simulation::experiment::*;
[INFO] [stdout]    |     -------------------------------- the item `simulation` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Default` is imported redundantly
[INFO] [stdout]   --> src/simulation/experiment/view/last_value.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | use std::default::Default;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 | use crate::simulation::experiment::*;
[INFO] [stdout]    |     -------------------------------- the item `Default` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `result` is imported redundantly
[INFO] [stdout]   --> src/simulation/experiment/view/last_value.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::result;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 | use crate::simulation::experiment::*;
[INFO] [stdout]    |     -------------------------------- the item `result` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `urlencoding` is imported redundantly
[INFO] [stdout]   --> src/simulation/utils/html.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use urlencoding;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | extern crate urlencoding;
[INFO] [stdout]    | ------------------------- the item `urlencoding` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.88s
[INFO] running `Command { std: "docker" "inspect" "acc4b9267e1a6dba431f99afc9b166a227630ef98456e1e1922b448e3ab05eeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acc4b9267e1a6dba431f99afc9b166a227630ef98456e1e1922b448e3ab05eeb", kill_on_drop: false }`
[INFO] [stdout] acc4b9267e1a6dba431f99afc9b166a227630ef98456e1e1922b448e3ab05eeb