[INFO] cloning repository https://github.com/mdevlamynck/living-documentation-editor-poc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mdevlamynck/living-documentation-editor-poc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdevlamynck%2Fliving-documentation-editor-poc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdevlamynck%2Fliving-documentation-editor-poc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f2f734ab01b27bb6cc189b68615d7526042caaa8
[INFO] checking mdevlamynck/living-documentation-editor-poc against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdevlamynck%2Fliving-documentation-editor-poc" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mdevlamynck/living-documentation-editor-poc 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/mdevlamynck/living-documentation-editor-poc
[INFO] finished tweaking git repo https://github.com/mdevlamynck/living-documentation-editor-poc
[INFO] tweaked toml for git repo https://github.com/mdevlamynck/living-documentation-editor-poc written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mdevlamynck/living-documentation-editor-poc 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]  Downloading crates ...
[INFO] [stderr]   Downloaded markdown v0.3.0
[INFO] [stderr]   Downloaded dissimilar v1.0.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 5cb53b6c8d0160747f5be1fe2a69d31999ad062fa41eb56ec1001f311104a95d
[INFO] running `Command { std: "docker" "start" "-a" "5cb53b6c8d0160747f5be1fe2a69d31999ad062fa41eb56ec1001f311104a95d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5cb53b6c8d0160747f5be1fe2a69d31999ad062fa41eb56ec1001f311104a95d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cb53b6c8d0160747f5be1fe2a69d31999ad062fa41eb56ec1001f311104a95d", kill_on_drop: false }`
[INFO] [stdout] 5cb53b6c8d0160747f5be1fe2a69d31999ad062fa41eb56ec1001f311104a95d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] f87aa394658acb61d72f05366d89af8bea4be89c8eb318d04a732ccb72296772
[INFO] running `Command { std: "docker" "start" "-a" "f87aa394658acb61d72f05366d89af8bea4be89c8eb318d04a732ccb72296772", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.33
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling serde_derive v1.0.131
[INFO] [stderr]    Compiling serde v1.0.131
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking pipeline v0.5.0
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]     Checking dissimilar v1.0.3
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking combine v4.6.2
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]     Checking tui v0.16.0
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking markdown v0.3.0
[INFO] [stderr]     Checking serde_yaml v0.8.21
[INFO] [stderr]     Checking living-documentation-editor-poc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `BTreeSet` is imported redundantly
[INFO] [stdout]    --> src/main.rs:125:19
[INFO] [stdout]     |
[INFO] [stdout] 125 |         use std::{collections::BTreeSet, fmt, fs, io, path::Path};
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 137 |         use super::*;
[INFO] [stdout]     |             -------- the item `BTreeSet` is already imported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BTreeSet` is imported redundantly
[INFO] [stdout]    --> src/main.rs:125:19
[INFO] [stdout]     |
[INFO] [stdout] 125 |         use std::{collections::BTreeSet, fmt, fs, io, path::Path};
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 137 |         use super::*;
[INFO] [stdout]     |             -------- the item `BTreeSet` is already imported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.38s
[INFO] running `Command { std: "docker" "inspect" "f87aa394658acb61d72f05366d89af8bea4be89c8eb318d04a732ccb72296772", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f87aa394658acb61d72f05366d89af8bea4be89c8eb318d04a732ccb72296772", kill_on_drop: false }`
[INFO] [stdout] f87aa394658acb61d72f05366d89af8bea4be89c8eb318d04a732ccb72296772
[INFO] checking mdevlamynck/living-documentation-editor-poc against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdevlamynck%2Fliving-documentation-editor-poc" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mdevlamynck/living-documentation-editor-poc 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/mdevlamynck/living-documentation-editor-poc
[INFO] finished tweaking git repo https://github.com/mdevlamynck/living-documentation-editor-poc
[INFO] tweaked toml for git repo https://github.com/mdevlamynck/living-documentation-editor-poc written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/mdevlamynck/living-documentation-editor-poc 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] d5c2ed39cd514423af9544a98effde68133904a3e4847942c77661c2375efa89
[INFO] running `Command { std: "docker" "start" "-a" "d5c2ed39cd514423af9544a98effde68133904a3e4847942c77661c2375efa89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5c2ed39cd514423af9544a98effde68133904a3e4847942c77661c2375efa89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5c2ed39cd514423af9544a98effde68133904a3e4847942c77661c2375efa89", kill_on_drop: false }`
[INFO] [stdout] d5c2ed39cd514423af9544a98effde68133904a3e4847942c77661c2375efa89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] cd0202b2e7f3b4bbbeab5175c57d64e65793a72405666c0e0ca8286a7ca75464
[INFO] running `Command { std: "docker" "start" "-a" "cd0202b2e7f3b4bbbeab5175c57d64e65793a72405666c0e0ca8286a7ca75464", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.33
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling serde_derive v1.0.131
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling serde v1.0.131
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking pipeline v0.5.0
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]     Checking dissimilar v1.0.3
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking combine v4.6.2
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking tui v0.16.0
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking markdown v0.3.0
[INFO] [stderr]     Checking serde_yaml v0.8.21
[INFO] [stderr]     Checking living-documentation-editor-poc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `BTreeSet` is imported redundantly
[INFO] [stdout]    --> src/main.rs:125:19
[INFO] [stdout]     |
[INFO] [stdout] 125 |         use std::{collections::BTreeSet, fmt, fs, io, path::Path};
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 137 |         use super::*;
[INFO] [stdout]     |             -------- the item `BTreeSet` is already imported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BTreeSet` is imported redundantly
[INFO] [stdout]    --> src/main.rs:125:19
[INFO] [stdout]     |
[INFO] [stdout] 125 |         use std::{collections::BTreeSet, fmt, fs, io, path::Path};
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 137 |         use super::*;
[INFO] [stdout]     |             -------- the item `BTreeSet` is already imported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.37s
[INFO] running `Command { std: "docker" "inspect" "cd0202b2e7f3b4bbbeab5175c57d64e65793a72405666c0e0ca8286a7ca75464", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd0202b2e7f3b4bbbeab5175c57d64e65793a72405666c0e0ca8286a7ca75464", kill_on_drop: false }`
[INFO] [stdout] cd0202b2e7f3b4bbbeab5175c57d64e65793a72405666c0e0ca8286a7ca75464