[INFO] fetching crate fasten 0.7.2...
[INFO] checking fasten-0.7.2 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate fasten 0.7.2 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate fasten 0.7.2 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 fasten 0.7.2
[INFO] finished tweaking crates.io crate fasten 0.7.2
[INFO] tweaked toml for crates.io crate fasten 0.7.2 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate fasten 0.7.2 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded smallvec v0.3.4
[INFO] [stderr]   Downloaded crossbeam v0.2.12
[INFO] [stderr]   Downloaded owning_ref v0.2.4
[INFO] [stderr]   Downloaded parking_lot_core v0.2.14
[INFO] [stderr]   Downloaded fastq v0.6.0
[INFO] [stderr]   Downloaded statistical v1.0.0
[INFO] [stderr]   Downloaded bam v0.1.4
[INFO] [stderr]   Downloaded parking_lot v0.3.8
[INFO] [stderr]   Downloaded multiqueue v0.3.2
[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] fe6ec63429da850577ff632e5d45eedd2e371464975ecce9c0ba53ed949b1b6c
[INFO] running `Command { std: "docker" "start" "-a" "fe6ec63429da850577ff632e5d45eedd2e371464975ecce9c0ba53ed949b1b6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe6ec63429da850577ff632e5d45eedd2e371464975ecce9c0ba53ed949b1b6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe6ec63429da850577ff632e5d45eedd2e371464975ecce9c0ba53ed949b1b6c", kill_on_drop: false }`
[INFO] [stdout] fe6ec63429da850577ff632e5d45eedd2e371464975ecce9c0ba53ed949b1b6c
[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] d565669dabe1126f2292816752abcea7c24431bab4692b408e7bb57526e7f144
[INFO] running `Command { std: "docker" "start" "-a" "d565669dabe1126f2292816752abcea7c24431bab4692b408e7bb57526e7f144", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling vcpkg v0.2.15
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking owning_ref v0.2.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking smallvec v0.3.4
[INFO] [stderr]     Checking parking_lot v0.3.8
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking unicode-width v0.1.11
[INFO] [stderr]     Checking crossbeam v0.2.12
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling libz-sys v1.1.12
[INFO] [stderr]    Compiling lz4-sys v1.9.4
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking statistical v1.0.0
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]     Checking bam v0.1.4
[INFO] [stderr]     Checking multiqueue v0.3.2
[INFO] [stderr]     Checking regex v1.10.2
[INFO] [stderr]     Checking lz4 v1.24.0
[INFO] [stderr]     Checking fastq v0.6.0
[INFO] [stderr]     Checking fasten v0.7.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Clone` is imported redundantly
[INFO] [stdout]  --> src/io/seq.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::clone::Clone;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Clone` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Clone` is imported redundantly
[INFO] [stdout]  --> src/io/seq.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::clone::Clone;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Clone` is already defined 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 30.42s
[INFO] running `Command { std: "docker" "inspect" "d565669dabe1126f2292816752abcea7c24431bab4692b408e7bb57526e7f144", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d565669dabe1126f2292816752abcea7c24431bab4692b408e7bb57526e7f144", kill_on_drop: false }`
[INFO] [stdout] d565669dabe1126f2292816752abcea7c24431bab4692b408e7bb57526e7f144
[INFO] checking fasten-0.7.2 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate fasten 0.7.2 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate fasten 0.7.2 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 fasten 0.7.2
[INFO] finished tweaking crates.io crate fasten 0.7.2
[INFO] tweaked toml for crates.io crate fasten 0.7.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate crates.io crate fasten 0.7.2 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-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] 7d32fc9cb25284415aa2006f6cabc138aa9e3c969dd1c2b9bb579e0adc6b0e01
[INFO] running `Command { std: "docker" "start" "-a" "7d32fc9cb25284415aa2006f6cabc138aa9e3c969dd1c2b9bb579e0adc6b0e01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d32fc9cb25284415aa2006f6cabc138aa9e3c969dd1c2b9bb579e0adc6b0e01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d32fc9cb25284415aa2006f6cabc138aa9e3c969dd1c2b9bb579e0adc6b0e01", kill_on_drop: false }`
[INFO] [stdout] 7d32fc9cb25284415aa2006f6cabc138aa9e3c969dd1c2b9bb579e0adc6b0e01
[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] b6b1f49477310f51c2bc38bbafcf50962951cd4ff9c30c7fcd7699f3bf0baa85
[INFO] running `Command { std: "docker" "start" "-a" "b6b1f49477310f51c2bc38bbafcf50962951cd4ff9c30c7fcd7699f3bf0baa85", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling vcpkg v0.2.15
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking owning_ref v0.2.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking parking_lot v0.3.8
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking unicode-width v0.1.11
[INFO] [stderr]     Checking crossbeam v0.2.12
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]     Checking smallvec v0.3.4
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling libz-sys v1.1.12
[INFO] [stderr]    Compiling lz4-sys v1.9.4
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking statistical v1.0.0
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking multiqueue v0.3.2
[INFO] [stderr]     Checking bam v0.1.4
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]     Checking regex v1.10.2
[INFO] [stderr]     Checking lz4 v1.24.0
[INFO] [stderr]     Checking fastq v0.6.0
[INFO] [stderr]     Checking fasten v0.7.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Clone` is imported redundantly
[INFO] [stdout]  --> src/io/seq.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::clone::Clone;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:124:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Clone` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Clone` is imported redundantly
[INFO] [stdout]  --> src/io/seq.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::clone::Clone;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:124:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Clone` is already defined 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 12.97s
[INFO] running `Command { std: "docker" "inspect" "b6b1f49477310f51c2bc38bbafcf50962951cd4ff9c30c7fcd7699f3bf0baa85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6b1f49477310f51c2bc38bbafcf50962951cd4ff9c30c7fcd7699f3bf0baa85", kill_on_drop: false }`
[INFO] [stdout] b6b1f49477310f51c2bc38bbafcf50962951cd4ff9c30c7fcd7699f3bf0baa85