[INFO] fetching crate ssb-legacy-msg-data 0.1.4...
[INFO] checking ssb-legacy-msg-data-0.1.4 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate ssb-legacy-msg-data 0.1.4 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate ssb-legacy-msg-data 0.1.4 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 ssb-legacy-msg-data 0.1.4
[INFO] finished tweaking crates.io crate ssb-legacy-msg-data 0.1.4
[INFO] tweaked toml for crates.io crate ssb-legacy-msg-data 0.1.4 written to /workspace/builds/worker-4-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 14 packages
[INFO] [stderr]       Adding base64 v0.13.1 (latest: v0.22.0)
[INFO] [stderr]       Adding encode_unicode v0.3.6 (latest: v1.0.0)
[INFO] [stderr]       Adding hashbrown v0.12.3 (latest: v0.14.3)
[INFO] [stderr]       Adding indexmap v1.9.3 (latest: v2.2.6)
[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 ryu-ecmascript v0.1.1
[INFO] [stderr]   Downloaded strtod2 v0.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 1d7969fa902b75ce0d5aad71e8c83bf95d41522112aa7d45c6b7166cba53596e
[INFO] running `Command { std: "docker" "start" "-a" "1d7969fa902b75ce0d5aad71e8c83bf95d41522112aa7d45c6b7166cba53596e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d7969fa902b75ce0d5aad71e8c83bf95d41522112aa7d45c6b7166cba53596e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d7969fa902b75ce0d5aad71e8c83bf95d41522112aa7d45c6b7166cba53596e", kill_on_drop: false }`
[INFO] [stdout] 1d7969fa902b75ce0d5aad71e8c83bf95d41522112aa7d45c6b7166cba53596e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 88f6e08d4bca14a26e66bcd1486a33eb7d7bc078893ffc060189db3f2efd5521
[INFO] running `Command { std: "docker" "start" "-a" "88f6e08d4bca14a26e66bcd1486a33eb7d7bc078893ffc060189db3f2efd5521", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling ryu-ecmascript v0.1.1
[INFO] [stderr]     Checking encode_unicode v0.3.6
[INFO] [stderr]     Checking strtod2 v0.0.1
[INFO] [stderr]     Checking ssb-legacy-msg-data v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `base64` is imported redundantly
[INFO] [stdout]   --> src/json/de.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | use base64;
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | extern crate base64;
[INFO] [stdout]    | -------------------- the item `base64` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `base64` is imported redundantly
[INFO] [stdout]   --> src/json/ser.rs:3:5
[INFO] [stdout]    |
[INFO] [stdout] 3  | use base64;
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | extern crate base64;
[INFO] [stdout]    | -------------------- the item `base64` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ryu_ecmascript` is imported redundantly
[INFO] [stdout]   --> src/json/ser.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | use ryu_ecmascript;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | extern crate ryu_ecmascript;
[INFO] [stdout]    | ---------------------------- the item `ryu_ecmascript` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `base64` is imported redundantly
[INFO] [stdout]   --> src/json/de.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | use base64;
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | extern crate base64;
[INFO] [stdout]    | -------------------- the item `base64` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `base64` is imported redundantly
[INFO] [stdout]   --> src/json/ser.rs:3:5
[INFO] [stdout]    |
[INFO] [stdout] 3  | use base64;
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | extern crate base64;
[INFO] [stdout]    | -------------------- the item `base64` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ryu_ecmascript` is imported redundantly
[INFO] [stdout]   --> src/json/ser.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | use ryu_ecmascript;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | extern crate ryu_ecmascript;
[INFO] [stdout]    | ---------------------------- the item `ryu_ecmascript` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.24s
[INFO] running `Command { std: "docker" "inspect" "88f6e08d4bca14a26e66bcd1486a33eb7d7bc078893ffc060189db3f2efd5521", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88f6e08d4bca14a26e66bcd1486a33eb7d7bc078893ffc060189db3f2efd5521", kill_on_drop: false }`
[INFO] [stdout] 88f6e08d4bca14a26e66bcd1486a33eb7d7bc078893ffc060189db3f2efd5521
[INFO] checking ssb-legacy-msg-data-0.1.4 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate ssb-legacy-msg-data 0.1.4 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate ssb-legacy-msg-data 0.1.4 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 ssb-legacy-msg-data 0.1.4
[INFO] finished tweaking crates.io crate ssb-legacy-msg-data 0.1.4
[INFO] tweaked toml for crates.io crate ssb-legacy-msg-data 0.1.4 written to /workspace/builds/worker-4-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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] c02d0007e19f1aa8f37ea4be4fbeaba8a13d631798f182f5214099ee39cac362
[INFO] running `Command { std: "docker" "start" "-a" "c02d0007e19f1aa8f37ea4be4fbeaba8a13d631798f182f5214099ee39cac362", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c02d0007e19f1aa8f37ea4be4fbeaba8a13d631798f182f5214099ee39cac362", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c02d0007e19f1aa8f37ea4be4fbeaba8a13d631798f182f5214099ee39cac362", kill_on_drop: false }`
[INFO] [stdout] c02d0007e19f1aa8f37ea4be4fbeaba8a13d631798f182f5214099ee39cac362
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] bbfcd69fd5018d3cb3ddf1e9b55ec64d7698c33deee85a5a7c7269525a947ab5
[INFO] running `Command { std: "docker" "start" "-a" "bbfcd69fd5018d3cb3ddf1e9b55ec64d7698c33deee85a5a7c7269525a947ab5", kill_on_drop: false }`
[INFO] [stderr]    Compiling ryu-ecmascript v0.1.1
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking encode_unicode v0.3.6
[INFO] [stderr]     Checking strtod2 v0.0.1
[INFO] [stderr]     Checking ssb-legacy-msg-data v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `base64` is imported redundantly
[INFO] [stdout]   --> src/json/de.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | use base64;
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | extern crate base64;
[INFO] [stdout]    | -------------------- the item `base64` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `base64` is imported redundantly
[INFO] [stdout]   --> src/json/ser.rs:3:5
[INFO] [stdout]    |
[INFO] [stdout] 3  | use base64;
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | extern crate base64;
[INFO] [stdout]    | -------------------- the item `base64` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ryu_ecmascript` is imported redundantly
[INFO] [stdout]   --> src/json/ser.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | use ryu_ecmascript;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | extern crate ryu_ecmascript;
[INFO] [stdout]    | ---------------------------- the item `ryu_ecmascript` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `base64` is imported redundantly
[INFO] [stdout]   --> src/json/de.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | use base64;
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | extern crate base64;
[INFO] [stdout]    | -------------------- the item `base64` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `base64` is imported redundantly
[INFO] [stdout]   --> src/json/ser.rs:3:5
[INFO] [stdout]    |
[INFO] [stdout] 3  | use base64;
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | extern crate base64;
[INFO] [stdout]    | -------------------- the item `base64` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ryu_ecmascript` is imported redundantly
[INFO] [stdout]   --> src/json/ser.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | use ryu_ecmascript;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | extern crate ryu_ecmascript;
[INFO] [stdout]    | ---------------------------- the item `ryu_ecmascript` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.38s
[INFO] running `Command { std: "docker" "inspect" "bbfcd69fd5018d3cb3ddf1e9b55ec64d7698c33deee85a5a7c7269525a947ab5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbfcd69fd5018d3cb3ddf1e9b55ec64d7698c33deee85a5a7c7269525a947ab5", kill_on_drop: false }`
[INFO] [stdout] bbfcd69fd5018d3cb3ddf1e9b55ec64d7698c33deee85a5a7c7269525a947ab5