[INFO] fetching crate kn-graph 0.5.0...
[INFO] checking kn-graph-0.5.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate kn-graph 0.5.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate kn-graph 0.5.0 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 kn-graph 0.5.0
[INFO] finished tweaking crates.io crate kn-graph 0.5.0
[INFO] tweaked toml for crates.io crate kn-graph 0.5.0 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]      Locking 49 packages
[INFO] [stderr]       Adding approx v0.3.2 (latest: v0.5.1)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding image v0.24.9 (latest: v0.25.1)
[INFO] [stderr]       Adding itertools v0.11.0 (latest: v0.12.1)
[INFO] [stderr]       Adding wasi v0.11.0+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]  Downloading crates ...
[INFO] [stderr]   Downloaded fast-srgb8 v1.0.0
[INFO] [stderr]   Downloaded unwrap-match v0.1.0
[INFO] [stderr]   Downloaded prost-derive v0.12.4
[INFO] [stderr]   Downloaded prost v0.12.4
[INFO] [stderr]   Downloaded palette_derive v0.7.5
[INFO] [stderr]   Downloaded decorum v0.3.1
[INFO] [stderr]   Downloaded palette v0.7.5
[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] b81e10767abce127cd980f7dbfaf0a142d9e23db56c69f5927b9b1897308671c
[INFO] running `Command { std: "docker" "start" "-a" "b81e10767abce127cd980f7dbfaf0a142d9e23db56c69f5927b9b1897308671c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b81e10767abce127cd980f7dbfaf0a142d9e23db56c69f5927b9b1897308671c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b81e10767abce127cd980f7dbfaf0a142d9e23db56c69f5927b9b1897308671c", kill_on_drop: false }`
[INFO] [stdout] b81e10767abce127cd980f7dbfaf0a142d9e23db56c69f5927b9b1897308671c
[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] 53c142f5ca6373158d8bca7303440000bac5edeef7c79a2a0e9522fa54e6e32e
[INFO] running `Command { std: "docker" "start" "-a" "53c142f5ca6373158d8bca7303440000bac5edeef7c79a2a0e9522fa54e6e32e", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling anyhow v1.0.81
[INFO] [stderr]    Compiling matrixmultiply v0.3.8
[INFO] [stderr]    Compiling either v1.10.0
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling palette v0.7.5
[INFO] [stderr]     Checking bytemuck v1.15.0
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]     Checking fast-srgb8 v1.0.0
[INFO] [stderr]     Checking itertools v0.11.0
[INFO] [stderr]     Checking unwrap-match v0.1.0
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking num-complex v0.4.5
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking image v0.24.9
[INFO] [stderr]     Checking decorum v0.3.1
[INFO] [stderr]     Checking ndarray v0.15.6
[INFO] [stderr]    Compiling prost-derive v0.12.4
[INFO] [stderr]    Compiling palette_derive v0.7.5
[INFO] [stderr]     Checking prost v0.12.4
[INFO] [stderr]     Checking kn-graph v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> src/graph.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> src/shape.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> src/graph.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> src/shape.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[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 25.82s
[INFO] running `Command { std: "docker" "inspect" "53c142f5ca6373158d8bca7303440000bac5edeef7c79a2a0e9522fa54e6e32e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53c142f5ca6373158d8bca7303440000bac5edeef7c79a2a0e9522fa54e6e32e", kill_on_drop: false }`
[INFO] [stdout] 53c142f5ca6373158d8bca7303440000bac5edeef7c79a2a0e9522fa54e6e32e
[INFO] checking kn-graph-0.5.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate kn-graph 0.5.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate kn-graph 0.5.0 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 crates.io crate kn-graph 0.5.0
[INFO] finished tweaking crates.io crate kn-graph 0.5.0
[INFO] tweaked toml for crates.io crate kn-graph 0.5.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 61585e4d6998b7844ef27b2661c73624ea648d42f40d8d0f5471d8370463be5b
[INFO] running `Command { std: "docker" "start" "-a" "61585e4d6998b7844ef27b2661c73624ea648d42f40d8d0f5471d8370463be5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "61585e4d6998b7844ef27b2661c73624ea648d42f40d8d0f5471d8370463be5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61585e4d6998b7844ef27b2661c73624ea648d42f40d8d0f5471d8370463be5b", kill_on_drop: false }`
[INFO] [stdout] 61585e4d6998b7844ef27b2661c73624ea648d42f40d8d0f5471d8370463be5b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 1b189855aed7c995ba73208a571bd57154b80df8e1601b0a10c5fa3b2571f439
[INFO] running `Command { std: "docker" "start" "-a" "1b189855aed7c995ba73208a571bd57154b80df8e1601b0a10c5fa3b2571f439", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling anyhow v1.0.81
[INFO] [stderr]    Compiling matrixmultiply v0.3.8
[INFO] [stderr]    Compiling either v1.10.0
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling palette v0.7.5
[INFO] [stderr]     Checking fast-srgb8 v1.0.0
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]     Checking bytemuck v1.15.0
[INFO] [stderr]     Checking itertools v0.11.0
[INFO] [stderr]     Checking unwrap-match v0.1.0
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.5
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking image v0.24.9
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking decorum v0.3.1
[INFO] [stderr]     Checking ndarray v0.15.6
[INFO] [stderr]    Compiling prost-derive v0.12.4
[INFO] [stderr]    Compiling palette_derive v0.7.5
[INFO] [stderr]     Checking prost v0.12.4
[INFO] [stderr]     Checking kn-graph v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> src/graph.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> src/shape.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> src/graph.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> src/shape.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[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 24.10s
[INFO] running `Command { std: "docker" "inspect" "1b189855aed7c995ba73208a571bd57154b80df8e1601b0a10c5fa3b2571f439", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b189855aed7c995ba73208a571bd57154b80df8e1601b0a10c5fa3b2571f439", kill_on_drop: false }`
[INFO] [stdout] 1b189855aed7c995ba73208a571bd57154b80df8e1601b0a10c5fa3b2571f439