[INFO] fetching crate retrace 0.1.0...
[INFO] testing retrace-0.1.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate retrace 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate retrace 0.1.0
[INFO] finished tweaking crates.io crate retrace 0.1.0
[INFO] tweaked toml for crates.io crate retrace 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate retrace 0.1.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 73 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.3.6 (available: v0.7.0)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 686366f2f59f295e732a77d827c592271a788c846293128d975b3f610321c68c
[INFO] running `Command { std: "docker" "start" "-a" "686366f2f59f295e732a77d827c592271a788c846293128d975b3f610321c68c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "686366f2f59f295e732a77d827c592271a788c846293128d975b3f610321c68c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "686366f2f59f295e732a77d827c592271a788c846293128d975b3f610321c68c", kill_on_drop: false }`
[INFO] [stdout] 686366f2f59f295e732a77d827c592271a788c846293128d975b3f610321c68c
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9d0266e7473e362f059f6439c8fb5df44fc5b8bc74dad4025fc39127da232b82
[INFO] running `Command { std: "docker" "start" "-a" "9d0266e7473e362f059f6439c8fb5df44fc5b8bc74dad4025fc39127da232b82", kill_on_drop: false }`
[INFO] [stderr]    Compiling arc-swap v1.7.1
[INFO] [stderr]    Compiling retrace v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "9d0266e7473e362f059f6439c8fb5df44fc5b8bc74dad4025fc39127da232b82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d0266e7473e362f059f6439c8fb5df44fc5b8bc74dad4025fc39127da232b82", kill_on_drop: false }`
[INFO] [stdout] 9d0266e7473e362f059f6439c8fb5df44fc5b8bc74dad4025fc39127da232b82
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93648324bc22b524049e6eac8cf1903216de840b65ae8b68862b176e908e39f3
[INFO] running `Command { std: "docker" "start" "-a" "93648324bc22b524049e6eac8cf1903216de840b65ae8b68862b176e908e39f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling csv-core v0.1.12
[INFO] [stderr]    Compiling regex-automata v0.4.11
[INFO] [stderr]    Compiling half v1.8.3
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling csv v1.3.1
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling serde_cbor v0.11.2
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling plotters v0.3.7
[INFO] [stderr]    Compiling criterion-plot v0.4.5
[INFO] [stderr]    Compiling regex v1.11.3
[INFO] [stderr]    Compiling criterion v0.3.6
[INFO] [stderr]    Compiling retrace v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 11.77s
[INFO] running `Command { std: "docker" "inspect" "93648324bc22b524049e6eac8cf1903216de840b65ae8b68862b176e908e39f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93648324bc22b524049e6eac8cf1903216de840b65ae8b68862b176e908e39f3", kill_on_drop: false }`
[INFO] [stdout] 93648324bc22b524049e6eac8cf1903216de840b65ae8b68862b176e908e39f3
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f3719d20e43a8048a0d1c36bd5b398f0ea5ad773a918dc7ec891caa97288262e
[INFO] running `Command { std: "docker" "start" "-a" "f3719d20e43a8048a0d1c36bd5b398f0ea5ad773a918dc7ec891caa97288262e", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/retrace-41bf57c4ea8fb714)
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test tests::backward_query ... ok
[INFO] [stdout] test tests::basic_functions ... ok
[INFO] [stdout] test tests::can_rollback_chunk ... ok
[INFO] [stdout] test tests::can_rollback_to_root ... ok
[INFO] [stdout] test tests::deferred_rebase_for_soft_limit ... ok
[INFO] [stdout] test tests::force_rebase_for_hard_limit ... ok
[INFO] [stdout] test tests::can_rollback_precise ... ok
[INFO] [stdout] test tests::is_send_sync ... ok
[INFO] [stdout] test tests::no_force_rebase_for_soft_limit ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests retrace
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - Retrace<T,R>::rollback (line 221) ... ok
[INFO] [stdout] test src/lib.rs - (line 26) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.58s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f3719d20e43a8048a0d1c36bd5b398f0ea5ad773a918dc7ec891caa97288262e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3719d20e43a8048a0d1c36bd5b398f0ea5ad773a918dc7ec891caa97288262e", kill_on_drop: false }`
[INFO] [stdout] f3719d20e43a8048a0d1c36bd5b398f0ea5ad773a918dc7ec891caa97288262e